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Document and Entity Information - shares	6 Months Ended
Document and Entity Information - shares	Dec. 31, 2016	Feb. 07, 2017
Document Documentand Entity Information [Abstract]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Dec. 31, 2016
Document Fiscal Year Focus	2017
Document Fiscal Period Focus	Q2
Trading Symbol	MTRX
Entity Registrant Name	MATRIX SERVICE CO
Entity Central Index Key	0000866273
Current Fiscal Year End Date	--06-30
Entity Filer Category	Accelerated Filer
Entity Common Stock, Shares Outstanding		26,593,791

Condensed Consolidated Statements of Income - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2016	Dec. 31, 2015
Income Statement [Abstract]
Revenues	$ 312,655	$ 323,529	$ 654,436	$ 642,860
Cost of revenues	284,443	293,524	593,946	578,271
Gross profit	28,212	30,005	60,490	64,589
Selling, general and administrative expenses	19,975	25,070	37,952	44,553
Operating income	8,237	4,935	22,538	20,036
Other income (expense):
Interest expense	(497)	(252)	(740)	(515)
Interest income	26	60	38	91
Other	47	(148)	54	(202)
Income before income tax expense	7,813	4,595	21,890	19,410
Provision for federal, state and foreign income taxes	2,563	1,477	7,298	6,553
Net income	5,250	3,118	14,592	12,857
Less: Net loss attributable to noncontrolling interest	0	(2,313)	0	(2,515)
Net income attributable to Matrix Service Company	$ 5,250	$ 5,431	$ 14,592	$ 15,372
Basic earnings (loss) per common share (US$ per share)	$ 0.20	$ 0.20	$ 0.55	$ 0.58
Diluted earnings (loss) per common share (US$ per share)	$ 0.20	$ 0.20	$ 0.54	$ 0.56
Weighted average common shares outstanding:
Basic (shares)	26,553	26,721	26,470	26,598
Diluted (shares)	26,832	27,248	26,842	27,229

Condensed Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2016	Dec. 31, 2015
Statement of Comprehensive Income [Abstract]
Net income	$ 5,250	$ 3,118	$ 14,592	$ 12,857
Other comprehensive loss, net of tax:
Foreign currency translation loss (net of tax of $69 and $106 for the three and six months ended December 31, 2016, respectively, and $204 and $384 for the three and six months ended December 31, 2015, respectively)	(1,718)	(1,366)	(1,997)	(3,815)
Comprehensive income	3,532	1,752	12,595	9,042
Less: Comprehensive loss attributable to noncontrolling interest	0	(2,313)	0	(2,515)
Comprehensive income attributable to Matrix Service Company	$ 3,532	$ 4,065	$ 12,595	$ 11,557

Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2016	Jun. 30, 2016
Current assets:
Cash and cash equivalents	$ 66,230	$ 71,656
Accounts receivable, less allowances (December 31, 2016— $8,313 and June 30, 2016—$8,403)	248,712	190,434
Costs and estimated earnings in excess of billings on uncompleted contracts	80,296	104,001
Inventories	4,194	3,935
Income taxes receivable	486	9
Other current assets	8,318	5,411
Total current assets	408,236	375,446
Property, plant and equipment at cost:
Land and buildings	39,348	39,224
Construction equipment	91,587	90,386
Transportation equipment	48,254	49,046
Office equipment and software	34,946	29,577
Construction in progress	4,563	7,475
Property, plant and equipment at cost, gross	218,698	215,708
Accumulated depreciation	(137,414)	(130,977)
Property, plant and equipment at cost, net	81,284	84,731
Goodwill	113,019	78,293
Other intangible assets	29,351	20,999
Deferred income taxes	2,512	3,719
Other assets	1,388	1,779
Total assets	635,790	564,967
Current liabilities:
Accounts payable	108,260	141,445
Billings on uncompleted contracts in excess of costs and estimated earnings	74,858	58,327
Accrued wages and benefits	21,162	27,716
Accrued insurance	9,171	9,246
Income taxes payable	1,293	2,675
Other accrued expenses	15,539	6,621
Total current liabilities	230,283	246,030
Deferred income taxes	2,855	3,198
Borrowings under senior revolving credit facility	72,412	0
Other liabilities	411	173
Total liabilities	305,961	249,401
Commitments and contingencies
Matrix Service Company stockholders' equity:
Common stock—$.01 par value; 60,000,000 shares authorized; 27,888,217 shares issued as of December 31, 2016, and June 30, 2016; 26,588,643 and 26,297,145 shares outstanding as of December 31, 2016 and June 30, 2016	279	279
Additional paid-in capital	124,659	127,058
Retained earnings	237,749	223,157
Accumulated other comprehensive loss	(8,842)	(6,845)
Matrix Service Company stockholders' equity	353,845	343,649
Less: Treasury stock, at cost — 1,299,574 shares as of December 31, 2016, and 1,591,072 shares as of June 30, 2016	(22,840)	(26,907)
Total Matrix Service Company stockholders’ equity	331,005	316,742
Noncontrolling interest	(1,176)	(1,176)
Total stockholders' equity	329,829	315,566
Total liabilities and stockholders’ equity	$ 635,790	$ 564,967

Condensed Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands	Dec. 31, 2016	Jun. 30, 2016
Statement Condensed Consolidated Balance Sheets [Abstract]
Accounts receivable, allowances	$ 8,313	$ 8,403
Common stock, par value	$ 0.01	$ 0.01
Common stock, shares authorized	60,000,000	60,000,000
Common stock, shares issued	27,888,217	27,888,217
Treasury stock, shares	1,299,574	1,591,072

Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	6 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Operating activities:
Net income	$ 14,592	$ 12,857
Adjustments to reconcile net income to net cash used by operating activities, net of effects from acquisitions:
Depreciation and amortization	9,988	10,720
Deferred income tax	970	1,390
Gain on sale of property, plant and equipment	(131)	(37)
Provision for uncollectible accounts	(34)	5,544
Stock-based compensation expense	3,547	3,509
Other	133	119
Changes in operating assets and liabilities increasing (decreasing) cash, net of effects from acquisitions:
Accounts receivable	(48,972)	(13,820)
Costs and estimated earnings in excess of billings on uncompleted contracts	24,451	4,328
Inventories	(259)	85
Other assets and liabilities	(3,974)	(8,861)
Accounts payable	(34,276)	(16,743)
Billings on uncompleted contracts in excess of costs and estimated earnings	4,883	17,436
Accrued expenses	(1,826)	(6,840)
Net cash provided (used) by operating activities	(30,908)	9,687
Investing activities:
Acquisition, net of cash acquired	(39,798)	0
Acquisition of property, plant and equipment	(4,208)	(7,516)
Proceeds from asset sales	196	145
Net cash used by investing activities	(43,810)	(7,371)
Financing activities:
Advances under senior revolving credit facility	102,084	2,753
Repayments of advances under senior revolving credit facility	(29,672)	(4,331)
Issuances of common stock	222	457
Payments of debt issuance costs	(168)	0
Proceeds from issuance of common stock under employee stock purchase plan	169	166
Repurchase of common stock for payment of statutory taxes due on equity-based compensation	(2,270)	(4,488)
Capital contributions from noncontrolling interest	0	8,433
Net cash provided by financing activities	70,365	2,990
Effect of exchange rate changes on cash and cash equivalents	(1,073)	(2,114)
Increase (decrease) in cash and cash equivalents	(5,426)	3,192
Cash and cash equivalents, beginning of period	71,656	79,239
Cash and cash equivalents, end of period	66,230	82,431
Supplemental disclosure of cash flow information:
Income taxes	8,361	9,112
Interest	399	521
Non-cash investing and financing activities:
Purchases of property, plant and equipment on account	$ 421	$ 726

Condensed Consolidated Statements of Changes in Stockholders' Equity - USD ($) $ in Thousands	Total	Common Stock	Additional Paid-In Capital	Retained Earnings	Treasury Stock	Accumulated Other Comprehensive Income (Loss)	Noncontrolling Interest
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest at Jun. 30, 2015	$ 284,554	$ 279	$ 123,038	$ 194,394	$ (18,489)	$ (5,926)	$ (8,742)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Noncontrolling Interest, Increase from Subsidiary Equity Issuance	8,433						8,433
Net income	12,857			15,372			(2,515)
Other comprehensive income (loss)	(3,815)					(3,815)
Treasury shares sold to Employee Stock Purchase Plan	166		89		77
Exercise of stock options	457		(7)		464
Issuance of deferred shares	0		(5,706)		5,706
Other treasury share purchases	(4,488)				(4,488)
Tax effect of exercised stock options and vesting of deferred shares	3,245		3,245
Stock-based compensation expense	3,509		3,509
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest at Dec. 31, 2015	304,918	279	124,168	209,766	(16,730)	(9,741)	(2,824)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning equity balances, as adjusted	315,566	279	127,058	223,157	(26,907)	(6,845)	(1,176)
Retrospective adjustment upon adoption of ASU 2016-09 (see Note 1)	0		100	(100)
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest at Jun. 30, 2016	315,566	279	126,958	223,257	(26,907)	(6,845)	(1,176)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	14,592			14,592			0
Other comprehensive income (loss)	(1,997)					(1,997)
Treasury shares sold to Employee Stock Purchase Plan	169		12		157
Exercise of stock options	222		(273)		495
Issuance of deferred shares	0		(5,685)		5,685
Other treasury share purchases	(2,270)				(2,270)
Stock-based compensation expense	3,547		3,547
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest at Dec. 31, 2016	$ 329,829	$ 279	$ 124,659	$ 237,749	$ (22,840)	$ (8,842)	$ (1,176)

Condensed Consolidated Statements of Changes in Stockholders' Equity (Parenthetical) - shares	6 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Exercise of stock options, shares	21,713	50,337
Issuance of deferred shares, shares	393,530	615,395
Employee Stock Purchase Plan, shares	9,577	8,382
Other treasury shares purchases, shares	133,322	200,019

Basis of Presentation (Notes)	6 Months Ended
Basis of Presentation (Notes)	Dec. 31, 2016
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Basis of Presentation	Basis of Presentation and Accounting Policies The condensed consolidated financial statements include the accounts of Matrix Service Company (“Matrix”, “we”, “our”, “us”, “its” or the “Company”) and its subsidiaries, unless otherwise indicated. Intercompany balances and transactions have been eliminated in consolidation. The accompanying unaudited condensed consolidated financial statements have been prepared in accordance with Rule 10-01 of Regulation S-X for interim financial statements required to be filed with the Securities and Exchange Commission and do not include all information and footnotes required by generally accepted accounting principles for complete financial statements. The information furnished reflects all adjustments, consisting of normal recurring adjustments, that are, in the opinion of management, necessary for a fair statement of the results of operations, cash flows and financial position for the interim periods presented. The accompanying condensed financial statements should be read in conjunction with the audited financial statements for the year ended June 30, 2016, included in the Company’s Annual Report on Form 10-K for the year then ended. The results of operations for the six month period ended December 31, 2016 may not necessarily be indicative of the results of operations for the full year ending June 30, 2017. Recently Issued Accounting Standards Accounting Standards Update 2014-09, Revenue from Contracts with Customers (Topic 606) On May 28, 2014, the Financial Accounting Standards Board ("FASB") issued Accounting Standards Update ("ASU") No. 2014-09. The standard outlines a single comprehensive model for entities to use in accounting for revenue arising from contracts with customers and supersedes most current revenue recognition guidance, including industry-specific guidance. The core principle of the revenue model is that “an entity recognizes revenue to depict the transfer of promised goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services.” The ASU also requires entities to disclose both quantitative and qualitative information that enables users of financial statements to understand the nature, amount, timing, and uncertainty of revenue and cash flows arising from contracts with customers. The ASU's disclosure requirements are significantly more comprehensive than those in existing revenue standards. The ASU applies to all contracts with customers except those that are within the scope of other topics in the FASB Accounting Standards Codification ("ASC"). The ASU is effective for annual reporting periods beginning after December 15, 2017, with early adoption permitted on a limited basis. Upon adoption, the Company may elect one of two application methods, a full retrospective application or a modified retrospective application. We expect to adopt this standard on July 1, 2018 and are currently evaluating its expected impact on our financial statements. Accounting Standards Update 2014-15, Presentation of Financial Statements-Going Concern (Subtopic 205-40): Disclosure of Uncertainties about an Entity’s Ability to Continue as a Going Concern On August 27, 2014, the FASB issued ASU 2014-15, which provides guidance on determining when and how reporting entities must disclose going-concern uncertainties in their financial statements. The new standard requires management to perform interim and annual assessments of an entity’s ability to continue as a going concern within one year of the date of issuance of the entity’s financial statements. Further, an entity must provide certain disclosures if there is “substantial doubt about the entity’s ability to continue as a going concern.” The FASB believes that requiring management to perform the assessment will enhance the timeliness, clarity, and consistency of related disclosures and improve convergence with international financial reporting standards ("IFRSs") (which emphasize management’s responsibility for performing the going-concern assessment). However, the time horizon for the assessment (look-forward period) and the disclosure thresholds under U.S. GAAP and IFRSs will continue to differ. The ASU is effective for annual periods ending after December 15, 2016, and interim periods thereafter; early adoption is permitted. The ASU was adopted during the Company's first fiscal quarter ending September 30, 2016. In connection with the adoption of the ASU, the Company now performs an assessment of its ability to continue as a going concern on a quarterly basis. Disclosure regarding the status of the Company's ability to continue as a going concern is required when there are conditions or events that raise substantial doubt about its ability to continue as a going concern within one year after the date that the financial statements are issued. Accounting Standards Update 2015-16, Business Combinations (Topic 805): Simplifying the Accounting for Measurement-Period Adjustments On September 25, 2015, the FASB issued ASU 2015-16 to simplify the accounting for measurement-period adjustments. The ASU was issued in response to stakeholder feedback that restatements of prior periods to reflect adjustments made to provisional amounts recognized in a business combination increase the cost and complexity of financial reporting but do not significantly improve the usefulness of the information. Under the ASU, an acquirer must recognize adjustments to provisional amounts that are identified during the measurement period in the reporting period in which the adjustment amounts are determined. The ASU also requires acquirers to present separately on the face of the income statement, or disclose in the notes, the portion of the amount recorded in current-period earnings by line item that would have been recorded in previous reporting periods if the adjustment to the provisional amounts had been recognized as of the acquisition date. For public business entities, the ASU is effective for fiscal years beginning after December 15, 2015, including interim periods within those fiscal years. We adopted this standard on July 1, 2016 with no material impact to the Company's financial statements. Accounting Standards Update 2016-02, Leases (Topic 842) On February 25, 2016, the FASB issued ASU 2016-02. The amendments in this update require, among other things, that lessees recognize the following for all leases (with the exception of short-term leases) at the commencement date: (1) a lease liability, which is a lessee’s obligation to make lease payments arising from a lease, measured on a discounted basis; and (2) a right-of-use asset, which is an asset that represents the lessee’s right to use, or control the use of, a specified asset for the lease term. Lessees and lessors must apply a modified retrospective transition approach for leases existing at, or entered into after, the beginning of the earliest comparative period presented in the financial statements. For public business entities, the ASU is effective for fiscal years beginning after December 15, 2018, including interim periods within those fiscal years. We are currently evaluating the ASU's expected impact on our financial statements. Accounting Standards Update 2016-09, Stock Compensation (Topic 718): Improvements to Employee Share-Based Payment Accounting On March 30, 2016, the FASB issued ASU 2016-09, which simplified several aspects of accounting for stock-based compensation transactions, including the accounting for income taxes and forfeitures and statutory tax withholding requirements. The ASU is effective for the Company on July 1, 2017 and early adoption is permitted. The Company adopted the ASU during its first fiscal quarter ending September 30, 2016. The following is a description of the key provisions of the ASU and their impacts to the Company's financial statements: Accounting for Income Taxes: The amendments require the Company to recognize excess tax benefits or tax deficiencies in its provision for income taxes in its consolidated statements of income during the period of vesting or exercise of its nonvested deferred share awards and stock options, respectively, for which it expects to receive an income tax deduction. Previously, the Company recognized any excess tax benefits in additional paid-in capital ("APIC") in the balance sheet and any tax deficiencies were recognized as a reduction of APIC to the extent the Company has accumulated excess tax benefits. Any tax deficiencies in excess of accumulated excess tax benefits in APIC were recognized in the provision for income taxes. The amendments also require the Company to only present excess tax benefits and tax deficiencies in the operating section of its statements of cash flows as a component of deferred tax activity. Previously, the Company was required to present such items in both the financing section and operating section of its statements of cash flows. Amendments related to the recognition of excess tax benefits and tax deficiencies in income are required to be applied prospectively, and amendments related to the cash flow statement presentation of excess tax benefits and tax deficiencies may be applied either retrospectively or prospectively. The Company applied the amendments requiring the recognition of excess tax benefits and tax deficiencies in income prospectively. As a result, the Company recognized $0.1 million and $0.5 million of excess tax benefits in its provision for income taxes during the three and six months ended December 31, 2016, respectively, which increased basic and diluted earnings per share by $0.01 and $0.02, respectively. Under the prior accounting standard, the Company would have recognized the excess tax benefits in equity as additional paid-in capital. The amendments relating to the presentation of excess tax benefits and tax deficiencies in the statement of cash flows were applied retrospectively. The effect of the retrospective adjustment was to eliminate the presentation of an operating cash outflow and a financing cash inflow for excess tax benefits on exercised stock options and vesting of deferred shares. These eliminations increased net cash provided by operating activities by $3.2 million and decreased net cash provided by financing activities by $3.2 million for the six months ended December 31, 2015. Net cash flows did not change as a result of the retrospective adjustment. Accounting for Forfeitures: The amendments in this ASU allow the Company to elect, as a company-wide accounting policy, either to continue to estimate the amount of forfeitures to exclude from compensation expense or to exclude forfeitures from compensation expense as they occur. Upon the adoption of the ASU during the first quarter of fiscal 2017, the Company elected to account for forfeitures as they occur. The Company is required to apply these amendments on a modified retrospective basis with a cumulative adjustment to retained earnings as of the beginning of the fiscal year. The Company recorded a modified retrospective adjustment to reduce the June 30, 2016 retained earnings balance and increase the additional paid-in capital balance by $0.1 million each. Statutory Tax Withholding Requirements: Under the prior accounting standard, an entire award must be classified as a liability if the fair value of the shares withheld exceeds the Company's minimum statutory withholding obligation. Under the ASU, the Company is allowed to withhold shares with a fair value up to the amount of tax owed using the maximum statutory tax rate in the employee's applicable jurisdictions. The Company is allowed to determine one maximum rate for all employees in each jurisdiction, rather than a rate for each employee in the jurisdiction. Also, the ASU requires that cash outflows to reacquire shares withheld for taxes to be classified in the financing section of the statement of cash flows. The Company adopted the ASU during the first quarter of fiscal 2017. Since the Company did not have any awards classified as liabilities due to statutory tax withholding requirements as of December 31, 2016, and since the Company already presented its cash outflows for reacquiring shares withheld for taxes as a financing activity in its statements of cash flows, these amendments did not have any impact on its financial statements upon adoption. The Company does not expect changes to employee withholdings for stock compensation to have a material impact to the financial statements. Accounting Standards Update 2016-13, Financial Instruments - Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments On June 16, 2016, the FASB issued ASU 2016-13, which will change how the Company accounts for its allowance for uncollectible accounts. The amendments in this update require a financial asset (or a group of financial assets) to be presented at the net amount expected to be collected. The income statement will reflect any increases or decreases of expected credit losses that have taken place during the period. The measurement of expected credit losses is based on relevant information about past events, including historical experience, current conditions, and reasonable and supportable forecasts that affect the collectibility of the reported amount. Current GAAP delays the recognition of the full amount of credit losses until the loss is probable of occurring. The amendments in this update eliminate the probable initial recognition threshold and, instead, reflect the Company's current estimate of all expected credit losses. In addition, current guidance limits the information the Company may consider in measuring a credit loss to its past events and current conditions. The amendments in this update broaden the information the Company may consider in developing its expected credit loss estimate to include forecasted information. The amendments in this update are effective for the Company on July 1, 2020 and the Company may early adopt on July 1, 2019. The Company must apply the amendments in this update through a cumulative-effect adjustment to retained earnings as of the beginning of the first reporting period in which the guidance is effective. At this time, the Company does not expect this update to have a material impact to its estimate of the allowance for uncollectible accounts.

Acquisitions (Notes)

6 Months Ended

Dec. 31, 2016

Business Combinations [Abstract]

Acquisitions

Note 2 – Acquisitions

Purchase of Houston Interests, LLC

On December 12, 2016, the Company completed the acquisition of Houston Interests, LLC ("Houston Interests"), a premier global solutions company that provides consulting, engineering, design, construction services and systems integration. Houston Interests brings expertise to the Company in natural gas processing; sulfur recovery, processing and handling; liquid terminals, silos and other bulk storage; process plant design; power generation environmental controls and material handling; industrial power distribution; electrical, instrumentation and controls; marine structures; material handling systems and terminals for cement, sulfur, fertilizer, coal and grain; and process heaters. The business has been included in our Matrix PDM Engineering, Inc. subsidiary, and its operating results have been allocated between the Oil Gas & Chemical and Industrial segments.

The Company purchased all of the equity interests of Houston Interests for $39.8 million in cash, net of working capital adjustments and cash acquired. The consideration paid is as follows (in thousands):



Cash paid for equity interest	$	46,000
Cash paid for working capital	4,129
Less: cash acquired	(10,331		)
Net purchase price	$	39,798

The Company funded the equity interest portion of the consideration paid from borrowings under the Company's senior secured revolving credit facility (See Note 5). The remaining consideration was paid with cash on hand.

The net purchase price was allocated to the major categories of assets and liabilities based on their estimated fair value at the acquisition date.

The following table summarizes the preliminary net purchase price allocation (in thousands):



Current assets	$	20,803
Property, plant and equipment	942
Goodwill	35,028
Other intangible assets	10,220
Total assets acquired	66,993
Current liabilities	16,674
Other liabilities	190
Net assets acquired	50,129
Cash	10,331
Net purchase price	$	39,798

The goodwill recognized from the acquisition is primarily attributable to the technical expertise of the acquired workforce and the complementary nature of Houston Interests' operations, which the Company believes will enable the combined entity to expand its service offerings and enter new markets. All of the goodwill recognized is deductible for income tax purposes. The fair value of the net assets acquired is preliminary pending the final valuation of those assets. As a result, goodwill is also preliminary since it has been recorded as the excess of the purchase price over the estimated fair value of the net assets acquired.

The Company has agreed to pay the previous owners up to $2.6 million for any unused portion of acquired warranty obligations outstanding as of June 30, 2017. In addition, the sellers have agreed to reimburse the Company for any warranty costs incurred in connection with the acquired warranties in excess of $2.6 million. All acquired warranties will expire by June 30, 2017. Any amounts paid to or received from the seller will be accounted for as a working capital adjustment, which will be reflected as a change to the net purchase price. None of the acquired warranties have expired as of December 31, 2016.

The Company incurred $0.4 million of expenses related to closing the acquisition during the three and six months ended December 31, 2016, which were included within selling, general and administrative expenses in the consolidated statements of income. The acquired business contributed revenues of $2.3 million and an operating loss of $0.2 million during the three and six months ended December 31, 2016.

The unaudited financial information in the table below summarizes the combined results of operations of Matrix Service Company and Houston Interests for the three and six months ended December 31, 2016 and 2015, on a pro forma basis, as though the companies had been combined as of July 1, 2015. The pro forma financial information presented in the table below is for informational purposes only and is not indicative of the results of operations that would have been achieved if the acquisition had taken place at July 1, 2015 nor should it be taken as indicative of future consolidated results of operations.



	Three Months Ended				Six Months Ended
	December 31, 2016		December 31, 2015		December 31, 2016		December 31, 2015
	(In thousands, except per share data)
Revenues	$	329,523	$	357,975	$	690,485	$	712,158
Net income attributable to Matrix Service Company	$	7,884	$	9,445	$	18,763	$	17,928
Basic earnings per common share	$	0.30	$	0.35	$	0.71	$	0.68
Diluted earnings per common share	$	0.29	$	0.35	$	0.70	$	0.67

The pro forma financial information presented in the table above includes the following adjustments to the combined entities' historical financial statements:

•

The combined entities recorded approximately $3.0 million of acquisition and integration expenses during the three and six months ended December 31, 2016, which were transferred in the pro forma earnings to the six months ended December 31, 2015 in order to report them as if they were incurred on July 1, 2015. Pro forma earnings were adjusted to include integration expenses that would have been recognized had the acquisition occurred on July 1, 2015 of $0.4 million and $0.8 million during the three and six months ended December 31, 2016, respectively, and $0.3 million and $0.5 million during the three and six months ended December 31, 2015, respectively.

•

Interest expense for the combined entities was increased by $0.3 million and $0.7 million during each of the three and six months ended December 31, 2016 and 2015, respectively. The increase was attributable to the assumption that the Company's borrowings of $46.0 million used to fund a portion of the net purchase price had been outstanding as of July 1, 2015. This increase was partially offset by the assumption that Houston Interests' former debt was extinguished as of July 1, 2015.

•

Depreciation and intangible asset amortization expense for the combined entities was reduced by $0.2 million and $0.3 million during the three and six months ended December 31, 2016, respectively, and was increased by $0.5 million and $0.9 million during the three and six months ended December 31, 2015, respectively. These adjustments are primarily due to the recognition of amortizable intangible assets as part of the acquisition and the effect of fair value adjustments to acquired property, plant and equipment.

•

Pro forma earnings were adjusted to include additional income tax expense of $1.9 million and $3.3 million during the three and six months ended December 31, 2016, respectively, and $2.5 million and $2.1 million during the three and six months ended December 31, 2015, respectively. Houston Interests was previously an exempt entity and income taxes were not assessed in its historical financial information.

Purchase of Baillie Tank Equipment, Ltd.

On February 1, 2016, the Company completed the acquisition of all outstanding stock of Baillie Tank Equipment, Ltd. (“BTE”), an internationally-based company with nearly 20 years of experience in the design and manufacture of products for use on aboveground storage tanks. Founded in 1998, BTE is a provider of tank products including geodesic domes, aluminum internal floating roofs, floating suction and skimmer systems, roof drain systems, and seals. BTE is headquartered in Sydney, Australia with a manufacturing facility in Seoul, South Korea. The Company acquired BTE to expand its service offerings of certain technical solutions for aboveground storage tanks. The business is now known as Matrix Applied Technologies, and its operating results are included in the Storage Solutions segment.

The Company purchased BTE with cash on-hand for a net purchase price of $13.0 million. The Company paid $15.4 million when including the subsequent repayment of long-term debt acquired and the settlement of certain other liabilities acquired, and excluding the cash acquired and certain amounts owed to the former owners for working capital adjustments. The net purchase price was allocated to the major categories of assets and liabilities based on their estimated fair value at the acquisition date.

The following table summarizes the final purchase price allocation (in thousands):



Current assets	$	5,574
Property, plant and equipment	4,347
Goodwill	7,030
Other intangible assets	720
Other assets	233
Total assets acquired	17,904
Current liabilities	1,669
Deferred income taxes	329
Long-term debt	1,858
Other liabilities	407
Net assets acquired	13,641
Cash acquired	592
Net purchase price	$	13,049

The goodwill recognized from the acquisition is attributable to the synergies of combining our operations and the technical expertise of the acquired workforce. None of the goodwill recognized is deductible for income tax purposes.

The Company incurred $0.8 million of expenses related to the acquisition during fiscal 2016, which were included within selling, general and administrative expenses in the consolidated statements of income. The acquired business contributed revenues of $1.8 million and $2.8 million during the three and six months ended December 31, 2016, respectively, and contributed operating income of $0.7 million and $0.3 million during the three and six months ended December 31, 2016.

- Definition

The entire disclosure for a business combination (or series of individually immaterial business combinations) completed during the period, including background, timing, and recognized assets and liabilities. The disclosure may include leverage buyout transactions (as applicable).

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
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Reference 2: http://www.xbrl.org/2003/role/presentationRef
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Reference 3: http://www.xbrl.org/2003/role/presentationRef
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+ Details

Uncompleted Contracts (Notes)

6 Months Ended

Dec. 31, 2016

Disclosure Customer Contracts Additional Information [Abstract]

Uncompleted Contracts

Contract terms of the Company’s construction contracts generally provide for progress billings based on project milestones. The excess of costs incurred and estimated earnings over amounts billed on uncompleted contracts is reported as a current asset. The excess of amounts billed over costs incurred and estimated earnings recognized on uncompleted contracts is reported as a current liability. Gross and net amounts on uncompleted contracts are as follows:



	December 31, 2016		June 30, 2016
	(in thousands)
Costs incurred and estimated earnings recognized on uncompleted contracts	$	1,983,345	$	1,875,014
Billings on uncompleted contracts	1,977,907		1,829,340
	$	5,438	$	45,674
Shown in balance sheet as:
Costs and estimated earnings in excess of billings on uncompleted contracts	$	80,296	$	104,001
Billings on uncompleted contracts in excess of costs and estimated earnings	74,858		58,327
	$	5,438	$	45,674

Progress billings in accounts receivable at December 31, 2016 and June 30, 2016 included retentions to be collected within one year of $51.4 million and $29.7 million, respectively. Contract retentions collectible beyond one year are included in other assets in the condensed consolidated balance sheet and totaled $0.3 million as of June 30, 2016. There were no retentions collectible beyond one year as of December 31, 2016.

Other

Under percentage of completion accounting for fixed-priced contracts, contract revenues and earnings are recognized ratably over the contract term based on the proportion of actual costs incurred to total estimated costs. As of December 31, 2016, the Company is performing work on two previously announced significant multi-year projects that are contracted on a fixed price basis. The first project is expected to complete in fiscal 2017 and revenue will continue to decline as this project nears completion. The second project is expected to be completed in fiscal 2018.

On the project that is expected to be completed in fiscal 2018, the Company executed a change order in the second quarter that settled the claims outstanding on the effective date of the change order, updated the project schedule, and increased the contract value to allow for the recovery of increased costs. The settlement resulted in a second quarter reduction in earnings related to adjusting the gross profit margin and the percent complete on the project due to the increased project size. In addition, the change order contained provisions that require the achievement of defined schedule milestones to earn a portion of the additional contract value. At December 31, 2016, the Company’s schedule assessment indicates that it is probable that these schedule milestones will be achieved. Although this change order reduced the financial risk inherent in this project, it is possible that future changes in contract estimates, including those related to project costs, project timeline, and future change orders or claims, could occur and have a material positive or negative impact to our results of operations and financial position in subsequent accounting periods.

Intangible Assets Including Goodwill (Notes)

6 Months Ended

Dec. 31, 2016

Goodwill and Intangible Assets Disclosure [Abstract]

Intangible Assets Including Goodwill

Goodwill

The changes in the carrying value of goodwill by segment are as follows:



	Electrical Infrastructure			Oil Gas & Chemical		Storage Solutions			Industrial			Total
	(In thousands)
Net balance at June 30, 2016	$	42,170		$	14,008	$	16,681		$	5,434		$	78,293
Purchase of Houston Interests (Note 2)	—			28,723		—			6,305			35,028
Purchase price adjustment for BTE (Note 2)	—			—		88			—			88
Translation adjustment (1)	(227		)	—		(121		)	(42		)	(390		)
Net balance at December 31, 2016	$	41,943		$	42,731	$	16,648		$	11,697		$	113,019


(1)	The translation adjustments relate to the periodic translation of Canadian Dollar and South Korean Won denominated goodwill recorded as a part of prior acquisitions in Canada and South Korea, in which the local currency was determined to be the functional currency.

The Company performed its annual goodwill impairment test as of May 31, 2016, which did not indicate the existence of any impairment at that time. While the operating results for the Oil Gas & Chemical and Industrial segments indicated a loss for the three and six months ended December 31, 2016, the Company does not consider these results to be a triggering event requiring the performance of an interim goodwill impairment test since the fundamentals of the industries driving these segments has not significantly deteriorated since the annual test was performed. The Company continues to consider these segments as core to its business and believes current operating results are not indicative of future performance. The Company will continue to monitor its operating results for indicators of impairment and perform additional tests as necessary.

Other Intangible Assets

Information on the carrying value of other intangible assets is as follows:



		At December 31, 2016
	Useful Life	Gross Carrying Amount		Accumulated Amortization			Net Carrying Amount
	(Years)	(In thousands)
Intellectual property	9 to 15	$	2,579	$	(1,336	)	$	1,243
Customer-based	1 to 15	38,057		(10,914		)	27,143
Non-compete agreements	4 to 5	1,453		(1,192		)	261
Trade names	1 to 5	1,795		(1,091		)	704
Total amortizing intangible assets		$	43,884	$	(14,533	)	$	29,351



		At June 30, 2016
	Useful Life	Gross Carrying Amount		Accumulated Amortization			Net Carrying Amount
	(Years)	(In thousands)
Intellectual property	9 to 15	$	2,579	$	(1,246	)	$	1,333
Customer-based	1.5 to 15	28,179		(9,655		)	18,524
Non-compete agreements	4 to 5	1,453		(1,102		)	351
Trade names	3 to 5	1,615		(824		)	791
Total amortizing intangible assets		$	33,826	$	(12,827	)	$	20,999

The increase in the gross carrying amount of other intangible assets at December 31, 2016 compared to June 30, 2016 is primarily due to the December 12, 2016 acquisition of Houston Interests (See Note 2). The specifically identifiable intangible assets recognized in the Houston Interests acquisition consist of:


•	customer-based intangibles with a fair value of $10.0 million and useful life of between 1 and 9 years; and


•	trade name with a fair value of $0.2 million and useful life of 1 year.

Amortization expense totaled $1.0 million and $1.8 million during the three and six months ended December 31, 2016, respectively, and $0.8 million and $1.6 million during the three and six months ended December 31, 2015, respectively. The Company recognized $0.1 million of amortization expense during the three and six months ended December 31, 2016 for intangible assets recorded as part of the Houston Interests acquisition.

We estimate that the remaining amortization expense at December 31, 2016 will be as follows (in thousands):



Period ending:
Remainder of Fiscal 2017	$	3,100
Fiscal 2018	4,757
Fiscal 2019	3,482
Fiscal 2020	3,472
Fiscal 2021	3,454
Fiscal 2022	2,615
Thereafter	8,471
Total estimated remaining amortization expense at December 31, 2016	$	29,351

- Definition

The entire disclosure for the aggregate amount of goodwill and a description of intangible assets, which may include (a) for amortizable intangible assets (also referred to as finite-lived intangible assets), the carrying amount, the amount of any significant residual value, and the weighted-average amortization period, (b) for intangible assets not subject to amortization (also referred to as indefinite-lived intangible assets), the carrying amount, and (c) the amount of research and development assets acquired and written off in the period, including the line item in the income statement in which the amounts written off are aggregated, if not readily apparent from the income statement. Also discloses (a) for amortizable intangibles assets in total and by major class, the gross carrying amount and accumulated amortization, the total amortization expense for the period, and the estimated aggregate amortization expense for each of the five succeeding fiscal years, (b) for intangible assets not subject to amortization the carrying amount in total and by major class, and (c) for goodwill, in total and for each reportable segment, the changes in the carrying amount of goodwill during the period (including the aggregate amount of goodwill acquired, the aggregate amount of impairment losses recognized, and the amount of goodwill included in the gain (loss) on disposal of a reporting unit). If any part of goodwill has not been allocated to a reportable segment, discloses the unallocated amount and the reasons for not allocating. For each impairment loss recognized related to an intangible asset (excluding goodwill), discloses: (a) a description of the impaired intangible asset and the facts and circumstances leading to the impairment, (b) the amount of the impairment loss and the method for determining fair value, (c) the caption in the income statement or the statement of activities in which the impairment loss is aggregated, and (d) the segment in which the impaired intangible asset is reported. For each goodwill impairment loss recognized, discloses: (a) a description of the facts and circumstances leading to the impairment, (b) the amount of the impairment loss and the method of determining the fair value of the associated reporting unit, and (c) if a recognized impairment loss is an estimate not finalized and the reasons why the estimate is not final. May also disclose the nature and amount of any significant adjustments made to a previous estimate of an impairment loss.

+ References + Details

Debt (Notes)

6 Months Ended

Dec. 31, 2016

Debt Disclosure [Abstract]

Debt

On December 12, 2016, the Company amended its credit agreement, under which it has a senior secured revolving credit facility (the "Credit Agreement"). The amendments are as follows:


•	The aggregate revolving loan capacity increased from $200.0 million to $250.0 million.


•	The maximum aggregate amount, or sublimit, for Canadian Dollar loans was increased from U.S. $40.0 million to U.S. $50.0 million.


•	During any "Acquisition Adjustment Period", as defined in the amended credit agreement, the Company's Senior Leverage Ratio, as defined in the amended credit agreement, may not exceed 3.00 to 1.00. At all other times, the Senior Leverage Ratio may not exceed 2.50 to 1.00.

The Credit Agreement includes a Senior Leverage Ratio covenant - which provides that Consolidated Funded Indebtedness, as of the end of any fiscal quarter, may not exceed 3.0 times Consolidated EBITDA, as defined in the Credit Agreement, during any Acquisition Adjustment Period and may not exceed 2.5 times Consolidated EBITDA at all other times, over the previous four quarters. For the four quarters ended December 31, 2016, Consolidated EBITDA was $84.0 million. Consolidated Funded Indebtedness at December 31, 2016 was $80.0 million.

Availability under the senior revolving credit facility at December 31, 2016 was as follows:



	December 31, 2016		June 30, 2016
	(In thousands)
Senior revolving credit facility	$	250,000	$	200,000
Capacity constraint due to the Senior Leverage Ratio	—		20,138
Capacity under the credit facility	250,000		179,862
Borrowings outstanding	72,412		—
Letters of credit	15,378		20,755
Availability under the senior revolving credit facility	$	162,210	$	159,107

Outstanding borrowings at December 31, 2016 under our Credit Agreement were primarily used to fund the acquisition of Houston Interests (See Note 2) and working capital needs in our Canadian business due to the timing of collections and disbursements on the previously announced power generating project.

At December 31, 2016, the Company was in compliance with all affirmative, negative, and financial covenants under the Credit Agreement.

Subsequent Event

On February 8, 2017, the Company entered into the Fourth Amended and Restated Credit Agreement (the "New Credit Agreement"), by and among the Company and certain foreign subsidiaries, as Borrowers, various subsidiaries of the Company, as Guarantors, JPMorgan Chase Bank, N.A., as Administrative Agent, Sole Lead Arranger and Sole Bookrunner, and the other Lenders party thereto, which replaced the Third Amended and Restated Credit Agreement dated as of November 7, 2011, as previously amended (the "Prior Credit Agreement").

The New Credit Agreement provides for a five-year senior secured revolving credit facility of $300.0 million that expires February 8, 2022, which replaces the $250.0 million senior secured revolving credit facility under the Prior Credit Agreement. The new credit facility may be used for working capital, acquisitions, capital expenditures, issuances of letters of credit and other lawful purposes.

The New Credit Agreement includes the following covenants and borrowing limitations:


•	Our Leverage Ratio, determined as of the end of each fiscal quarter, may not exceed 3.00 to 1.00.


•	As with the Prior Credit Agreement, we are required to maintain a Fixed Charge Coverage Ratio, determined as of the end of each fiscal quarter, greater than or equal to 1.25 to 1.00.


•	Asset dispositions (other than dispositions in which 100% of the net cash proceeds therefrom are reinvested into the Company and dispositions of inventory and obsolete or unneeded equipment in the ordinary course of business) are limited to $20.0 million per 12-month period.

The new credit facility will include a sub-facility for revolving loans denominated in Australian Dollars, Canadian Dollars, Euros and Pounds Sterling in an aggregate amount not to exceed the U.S. Dollar equivalent of $75.0 million and a $200.0 million sublimit for letters of credit. Each revolving borrowing under the New Credit Agreement will bear interest at a rate per annum equal to:


•	The ABR or the Adjusted LIBO Rate, in the case of revolving loans denominated in U.S. Dollars;


•	The Canadian Prime Rate or the CDOR rate, in the case of revolving loans denominated in Canadian Dollars;


•	The Adjusted LIBO Rate, in the case of revolving loans denominated in Pounds Sterling or Australian Dollars;


•	The EURIBO Rate, in the case of revolving loans denominated in Euros,

in each case, plus the Applicable Margin, which is based on the Company's Leverage Ratio. The Applicable Margin on ABR loans ranges between 0.625% and 1.625%. The Applicable Margin for Adjusted LIBO, EURIBO and CDOR loans ranges between 1.625% and 2.625% and the Applicable Margin for Canadian Prime Rate loans ranges between 2.125% and 3.125%.

The unused credit facility fee is between 0.20% and 0.45% based on the Leverage Ratio.

Income Taxes (Notes)	6 Months Ended
Income Taxes (Notes)	Dec. 31, 2016
Income Tax Disclosure [Abstract]
Income Taxes	Income Taxes We use the asset and liability approach for financial accounting and reporting for income taxes. Deferred income tax assets and liabilities are computed annually for differences between the financial statement and tax bases of assets and liabilities that will result in taxable or deductible amounts in the future based on enacted tax laws and rates applicable to the periods in which the differences are expected to affect taxable income. Valuation allowances based on our judgments and estimates are established when necessary to reduce deferred tax assets to the amount expected to be realized in future operating results. Company management believes that realization of deferred tax assets in excess of the valuation allowance is more likely than not. Our estimates are based on facts and circumstances in existence as well as interpretations of existing tax regulations and laws applied to the facts and circumstances. The Company provides for income taxes regardless of whether it has received a tax assessment. Taxes are provided when it is considered probable that additional taxes will be due in excess of amounts included in the tax return. The Company regularly reviews exposure to additional income taxes due, and as further information is known or events occur, adjustments may be recorded. Our effective tax rate for the three and six months ended December 31, 2016 was 32.8% and 33.3%, respectively, compared to 32.1% and 33.8% in the same periods a year earlier. The Company recorded discrete benefits of $0.3 million and $0.5 million during the three and six months ended December 31, 2016, respectively, and recorded $0.9 million and $1.4 million of discrete benefits during the three and six months ended December 31, 2015, respectively. The fiscal 2017 discrete benefits primarily relate to the application of ASU 2016-09 (See Note 1) and the fiscal 2016 tax rate was positively impacted by a discrete item related to the retroactive application of the R&D tax credit and a foreign currency item related to our Canadian operations.

Commitments and Contingencies (Notes)	6 Months Ended
Commitments and Contingencies (Notes)	Dec. 31, 2016
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies	Commitments and Contingencies Insurance Reserves The Company maintains insurance coverage for various aspects of its operations. However, exposure to potential losses is retained through the use of deductibles, self-insured retentions and coverage limits. Typically our contracts require us to indemnify our customers for injury, damage or loss arising from the performance of our services and provide warranties for materials and workmanship. The Company may also be required to name the customer as an additional insured up to the limits of insurance available, or we may be required to purchase special insurance policies or surety bonds for specific customers or provide letters of credit in lieu of bonds to satisfy performance and financial guarantees on some projects. Matrix maintains a performance and payment bonding line sufficient to support the business. The Company generally requires its subcontractors to indemnify the Company and the Company’s customer and name the Company as an additional insured for activities arising out of the subcontractors’ work. We also require certain subcontractors to provide additional insurance policies, including surety bonds in favor of the Company, to secure the subcontractors’ work or as required by the subcontract. There can be no assurance that our insurance and the additional insurance coverage provided by our subcontractors will fully protect us against a valid claim or loss under the contracts with our customers. Unapproved Change Orders and Claims Costs and estimated earnings in excess of billings on uncompleted contracts included revenues for unapproved change orders and claims of $14.4 million at December 31, 2016 and $10.3 million at June 30, 2016. Generally, collection of amounts related to unapproved change orders and claims is expected within twelve months. However, since customers may not pay these amounts until final resolution of related claims, collection of these amounts may extend beyond one year. Other The Company and its subsidiaries are participants in various legal actions. It is the opinion of management that none of the known legal actions will have a material impact on the Company’s financial position, results of operations or liquidity.

Earnings per Common Share (Notes)

6 Months Ended

Dec. 31, 2016

Earnings Per Share [Abstract]

Earnings per Common Share

Basic earnings per share (“Basic EPS”) is calculated based on the weighted average shares outstanding during the period. Diluted earnings per share (“Diluted EPS”) includes the dilutive effect of stock options and nonvested deferred shares.

The computation of basic and diluted earnings per share is as follows:



	Three Months Ended				Six Months Ended
	December 31, 2016		December 31, 2015		December 31, 2016		December 31, 2015
	(In thousands, except per share data)
Basic EPS:
Net income attributable to Matrix Service Company	$	5,250	$	5,431	$	14,592	$	15,372
Weighted average shares outstanding	26,553		26,721		26,470		26,598
Basic earnings per share	$	0.20	$	0.20	$	0.55	$	0.58
Diluted EPS:
Weighted average shares outstanding – basic	26,553		26,721		26,470		26,598
Dilutive stock options	55		76		53		81
Dilutive nonvested deferred shares	224		451		319		550
Diluted weighted average shares	26,832		27,248		26,842		27,229
Diluted earnings per share	$	0.20	$	0.20	$	0.54	$	0.56

The following securities are considered antidilutive and have been excluded from the calculation of Diluted EPS:



	Three Months Ended		Six Months Ended
	December 31, 2016	December 31, 2015	December 31, 2016	December 31, 2015
	(In thousands)
Nonvested deferred shares	64	86	137	105

Segment Information (Notes)

6 Months Ended

Dec. 31, 2016

Segment Reporting [Abstract]

Segment Information

We operate our business through four reportable segments: Electrical Infrastructure, Oil Gas & Chemical, Storage Solutions, and Industrial.

The Electrical Infrastructure segment primarily encompasses construction and maintenance services to a variety of power generation facilities, such as combined cycle plants, natural gas fired power stations, and renewable energy installations. We also provide high voltage services to investor owned utilities, including construction of new substations, upgrades of existing substations, short-run transmission line installations, distribution upgrades and maintenance, and storm restoration services.

The Oil Gas & Chemical segment includes turnaround activities, plant maintenance, engineering and construction in the downstream and midstream petroleum industries. Our customers in these industries are engaged in refining crude oil and processing, fractionating, and marketing of natural gas and natural gas liquids. Another key offering is industrial cleaning services, which include hydroblasting, hydroexcavating, chemical cleaning and vacuum services. We also perform work in the petrochemical and upstream petroleum markets.

The Storage Solutions segment includes new construction of crude and refined products aboveground storage tanks (“ASTs”), as well as planned and emergency maintenance services. The Storage Solutions segment also includes balance of plant work in storage terminals and tank farms. Also included in the Storage Solutions segment is work related to specialty storage tanks, including liquefied natural gas (“LNG”), liquid nitrogen/liquid oxygen (“LIN/LOX”), liquid petroleum (“LPG”) tanks and other specialty vessels, including spheres. Finally, we offer AST products, including geodesic domes, aluminum internal floating roofs, floating suction and skimmer systems, roof drain systems and floating roof seals.

The Industrial segment primarily includes construction and maintenance work in the iron and steel, mining and minerals, and agricultural industries. Our work in the mining and minerals industry is primarily for customers engaged in the extraction of copper. Our work in the agricultural industry includes the engineering and design of grain silos, docks and handling systems; the design of control system automation and materials handling for the food industry; and engineering, construction, process design and balance of plant work for fertilizer production facilities. We also perform work in bulk material handling, thermal vacuum chambers, and other industrial markets.

The Company evaluates performance and allocates resources based on operating income. The accounting policies of the reportable segments are the same as those described in the Summary of Significant Accounting Policies footnote included in the Company’s Annual Report on Form 10-K for the year ended June 30, 2016. Intersegment sales and transfers are recorded at cost; therefore, no intersegment profit or loss is recognized.

Segment assets consist primarily of cash and cash equivalents, accounts receivable, costs and estimated earnings in excess of billings on uncompleted contracts, property, plant and equipment, goodwill and other intangible assets.

Results of Operations

(In thousands)



	Three Months Ended						Six Months Ended
	December 31, 2016			December 31, 2015			December 31, 2016			December 31, 2015
Gross revenues
Electrical Infrastructure	$	103,158		$	91,398		$	191,183		$	157,023
Oil Gas & Chemical	56,913			63,472			94,741			132,431
Storage Solutions	128,927			122,647			328,577			267,217
Industrial	25,026			48,390			47,753			89,725
Total gross revenues	$	314,024		$	325,907		$	662,254		$	646,396
Less: Inter-segment revenues
Oil Gas & Chemical	1,199			1,932			$	6,485		$	2,580
Storage Solutions	170			478			298			812
Industrial	—			(32		)	1,035			144
Total inter-segment revenues	$	1,369		$	2,378		$	7,818		$	3,536
Consolidated revenues
Electrical Infrastructure	$	103,158		$	91,398		$	191,183		$	157,023
Oil Gas & Chemical	55,714			61,540			88,256			129,851
Storage Solutions	128,757			122,169			328,279			266,405
Industrial	25,026			48,422			46,718			89,581
Total consolidated revenues	$	312,655		$	323,529		$	654,436		$	642,860
Gross profit
Electrical Infrastructure	$	7,225		$	4,021		$	12,475		$	8,729
Oil Gas & Chemical	2,431			5,971			2,432			11,654
Storage Solutions	17,071			14,426			43,524			34,658
Industrial	1,485			5,587			2,059			9,548
Total gross profit	$	28,212		$	30,005		$	60,490		$	64,589
Operating income (loss)
Electrical Infrastructure	$	2,164		$	(723	)	$	3,221		$	477
Oil Gas & Chemical	(1,950		)	(3,029		)	(4,855		)	(1,613		)
Storage Solutions	8,242			6,374			25,015			17,923
Industrial	(219		)	2,313			(843		)	3,249
Total operating income	$	8,237		$	4,935		$	22,538		$	20,036

Total assets by segment were as follows:



	December 31, 2016		June 30, 2016
Electrical Infrastructure	$	159,388	$	135,298
Oil Gas & Chemical	148,095		91,350
Storage Solutions	194,397		201,875
Industrial	78,348		67,569
Unallocated assets	55,562		68,875
Total segment assets	$	635,790	$	564,967

- Definition

The entire disclosure for reporting segments including data and tables. Reportable segments include those that meet any of the following quantitative thresholds a) it's reported revenue, including sales to external customers and intersegment sales or transfers is 10 percent or more of the combined revenue, internal and external, of all operating segments b) the absolute amount of its reported profit or loss is 10 percent or more of the greater, in absolute amount of 1) the combined reported profit of all operating segments that did not report a loss or 2) the combined reported loss of all operating segments that did report a loss c) its assets are 10 percent or more of the combined assets of all operating segments.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 34
-URI http://asc.fasb.org/extlink&oid=68060357&loc=d3e8981-108599

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 41
-URI http://asc.fasb.org/extlink&oid=68060357&loc=d3e9038-108599

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 33
-URI http://asc.fasb.org/extlink&oid=68060357&loc=d3e8971-108599

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 12
-URI http://asc.fasb.org/extlink&oid=68060357&loc=d3e8595-108599

Reference 5: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=68060357&loc=d3e8380-108599

Reference 6: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 32
-URI http://asc.fasb.org/extlink&oid=68060357&loc=d3e8933-108599

Reference 7: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 26
-URI http://asc.fasb.org/extlink&oid=68060357&loc=d3e8844-108599

Reference 8: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 35
-URI http://asc.fasb.org/extlink&oid=68060357&loc=d3e8984-108599

Reference 9: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 40
-URI http://asc.fasb.org/extlink&oid=68060357&loc=d3e9031-108599

Reference 10: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 42
-URI http://asc.fasb.org/extlink&oid=68060357&loc=d3e9054-108599

Reference 11: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 10
-URI http://asc.fasb.org/extlink&oid=68060357&loc=d3e8538-108599

Reference 12: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 29
-URI http://asc.fasb.org/extlink&oid=68060357&loc=d3e8864-108599

Reference 13: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 31
-URI http://asc.fasb.org/extlink&oid=68060357&loc=d3e8924-108599

Reference 14: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 30
-URI http://asc.fasb.org/extlink&oid=68060357&loc=d3e8906-108599

+ Details

Acquisitions (Tables)

6 Months Ended

Dec. 31, 2016

Houston Interests, LLC [Member]

Business Acquisition, Pro Forma Information, Nonrecurring Adjustment [Line Items]

Consideration transferred [Table Text Block]



Cash paid for equity interest	$	46,000
Cash paid for working capital	4,129
Less: cash acquired	(10,331		)
Net purchase price	$	39,798

Schedule of Preliminary Purchase Price Allocation

The following table summarizes the preliminary net purchase price allocation (in thousands):



Current assets	$	20,803
Property, plant and equipment	942
Goodwill	35,028
Other intangible assets	10,220
Total assets acquired	66,993
Current liabilities	16,674
Other liabilities	190
Net assets acquired	50,129
Cash	10,331
Net purchase price	$	39,798

Pro Forma Information



	Three Months Ended				Six Months Ended
	December 31, 2016		December 31, 2015		December 31, 2016		December 31, 2015
	(In thousands, except per share data)
Revenues	$	329,523	$	357,975	$	690,485	$	712,158
Net income attributable to Matrix Service Company	$	7,884	$	9,445	$	18,763	$	17,928
Basic earnings per common share	$	0.30	$	0.35	$	0.71	$	0.68
Diluted earnings per common share	$	0.29	$	0.35	$	0.70	$	0.67

Baillie Tank Equipment, Ltd. [Member]

Business Acquisition, Pro Forma Information, Nonrecurring Adjustment [Line Items]

Schedule of Preliminary Purchase Price Allocation

The following table summarizes the final purchase price allocation (in thousands):



Current assets	$	5,574
Property, plant and equipment	4,347
Goodwill	7,030
Other intangible assets	720
Other assets	233
Total assets acquired	17,904
Current liabilities	1,669
Deferred income taxes	329
Long-term debt	1,858
Other liabilities	407
Net assets acquired	13,641
Cash acquired	592
Net purchase price	$	13,049

Uncompleted Contracts (Tables)

6 Months Ended

Dec. 31, 2016

Disclosure Customer Contracts Additional Information [Abstract]

Gross and Net Amount of Uncompleted Contracts

Gross and net amounts on uncompleted contracts are as follows:



	December 31, 2016		June 30, 2016
	(in thousands)
Costs incurred and estimated earnings recognized on uncompleted contracts	$	1,983,345	$	1,875,014
Billings on uncompleted contracts	1,977,907		1,829,340
	$	5,438	$	45,674
Shown in balance sheet as:
Costs and estimated earnings in excess of billings on uncompleted contracts	$	80,296	$	104,001
Billings on uncompleted contracts in excess of costs and estimated earnings	74,858		58,327
	$	5,438	$	45,674

Intangible Assets Including Goodwill (Tables)

6 Months Ended

Dec. 31, 2016

Finite-Lived Intangible Assets [Line Items]

Carrying Value of Goodwill by Segment

The changes in the carrying value of goodwill by segment are as follows:



	Electrical Infrastructure			Oil Gas & Chemical		Storage Solutions			Industrial			Total
	(In thousands)
Net balance at June 30, 2016	$	42,170		$	14,008	$	16,681		$	5,434		$	78,293
Purchase of Houston Interests (Note 2)	—			28,723		—			6,305			35,028
Purchase price adjustment for BTE (Note 2)	—			—		88			—			88
Translation adjustment (1)	(227		)	—		(121		)	(42		)	(390		)
Net balance at December 31, 2016	$	41,943		$	42,731	$	16,648		$	11,697		$	113,019


(1)	The translation adjustments relate to the periodic translation of Canadian Dollar and South Korean Won denominated goodwill recorded as a part of prior acquisitions in Canada and South Korea, in which the local currency was determined to be the functional currency.

Carrying Value of Other Intangible Assets

Information on the carrying value of other intangible assets is as follows:



		At December 31, 2016
	Useful Life	Gross Carrying Amount		Accumulated Amortization			Net Carrying Amount
	(Years)	(In thousands)
Intellectual property	9 to 15	$	2,579	$	(1,336	)	$	1,243
Customer-based	1 to 15	38,057		(10,914		)	27,143
Non-compete agreements	4 to 5	1,453		(1,192		)	261
Trade names	1 to 5	1,795		(1,091		)	704
Total amortizing intangible assets		$	43,884	$	(14,533	)	$	29,351



		At June 30, 2016
	Useful Life	Gross Carrying Amount		Accumulated Amortization			Net Carrying Amount
	(Years)	(In thousands)
Intellectual property	9 to 15	$	2,579	$	(1,246	)	$	1,333
Customer-based	1.5 to 15	28,179		(9,655		)	18,524
Non-compete agreements	4 to 5	1,453		(1,102		)	351
Trade names	3 to 5	1,615		(824		)	791
Total amortizing intangible assets		$	33,826	$	(12,827	)	$	20,999

Schedule of Finite-Lived Intangible Assets, Future Amortization Expense [Table Text Block]



Period ending:
Remainder of Fiscal 2017	$	3,100
Fiscal 2018	4,757
Fiscal 2019	3,482
Fiscal 2020	3,472
Fiscal 2021	3,454
Fiscal 2022	2,615
Thereafter	8,471
Total estimated remaining amortization expense at December 31, 2016	$	29,351

Debt (Tables)

6 Months Ended

Dec. 31, 2016

Debt Disclosure [Abstract]

Availability Under the Senior Credit Facility

Availability under the senior revolving credit facility at December 31, 2016 was as follows:



	December 31, 2016		June 30, 2016
	(In thousands)
Senior revolving credit facility	$	250,000	$	200,000
Capacity constraint due to the Senior Leverage Ratio	—		20,138
Capacity under the credit facility	250,000		179,862
Borrowings outstanding	72,412		—
Letters of credit	15,378		20,755
Availability under the senior revolving credit facility	$	162,210	$	159,107

Earnings per Common Share (Tables)

6 Months Ended

Dec. 31, 2016

Earnings Per Share [Abstract]

Computation of Basic and Diluted Earnings Per Share

The computation of basic and diluted earnings per share is as follows:



	Three Months Ended				Six Months Ended
	December 31, 2016		December 31, 2015		December 31, 2016		December 31, 2015
	(In thousands, except per share data)
Basic EPS:
Net income attributable to Matrix Service Company	$	5,250	$	5,431	$	14,592	$	15,372
Weighted average shares outstanding	26,553		26,721		26,470		26,598
Basic earnings per share	$	0.20	$	0.20	$	0.55	$	0.58
Diluted EPS:
Weighted average shares outstanding – basic	26,553		26,721		26,470		26,598
Dilutive stock options	55		76		53		81
Dilutive nonvested deferred shares	224		451		319		550
Diluted weighted average shares	26,832		27,248		26,842		27,229
Diluted earnings per share	$	0.20	$	0.20	$	0.54	$	0.56

Antidilutive Securities Excluded from the Calculation of Diluted EPS

The following securities are considered antidilutive and have been excluded from the calculation of Diluted EPS:



	Three Months Ended		Six Months Ended
	December 31, 2016	December 31, 2015	December 31, 2016	December 31, 2015
	(In thousands)
Nonvested deferred shares	64	86	137	105

Segment Information (Tables)

6 Months Ended

Dec. 31, 2016

Segment Reporting [Abstract]

Results of Operations

(In thousands)



	Three Months Ended						Six Months Ended
	December 31, 2016			December 31, 2015			December 31, 2016			December 31, 2015
Gross revenues
Electrical Infrastructure	$	103,158		$	91,398		$	191,183		$	157,023
Oil Gas & Chemical	56,913			63,472			94,741			132,431
Storage Solutions	128,927			122,647			328,577			267,217
Industrial	25,026			48,390			47,753			89,725
Total gross revenues	$	314,024		$	325,907		$	662,254		$	646,396
Less: Inter-segment revenues
Oil Gas & Chemical	1,199			1,932			$	6,485		$	2,580
Storage Solutions	170			478			298			812
Industrial	—			(32		)	1,035			144
Total inter-segment revenues	$	1,369		$	2,378		$	7,818		$	3,536
Consolidated revenues
Electrical Infrastructure	$	103,158		$	91,398		$	191,183		$	157,023
Oil Gas & Chemical	55,714			61,540			88,256			129,851
Storage Solutions	128,757			122,169			328,279			266,405
Industrial	25,026			48,422			46,718			89,581
Total consolidated revenues	$	312,655		$	323,529		$	654,436		$	642,860
Gross profit
Electrical Infrastructure	$	7,225		$	4,021		$	12,475		$	8,729
Oil Gas & Chemical	2,431			5,971			2,432			11,654
Storage Solutions	17,071			14,426			43,524			34,658
Industrial	1,485			5,587			2,059			9,548
Total gross profit	$	28,212		$	30,005		$	60,490		$	64,589
Operating income (loss)
Electrical Infrastructure	$	2,164		$	(723	)	$	3,221		$	477
Oil Gas & Chemical	(1,950		)	(3,029		)	(4,855		)	(1,613		)
Storage Solutions	8,242			6,374			25,015			17,923
Industrial	(219		)	2,313			(843		)	3,249
Total operating income	$	8,237		$	4,935		$	22,538		$	20,036

Total assets by segment were as follows:



	December 31, 2016		June 30, 2016
Electrical Infrastructure	$	159,388	$	135,298
Oil Gas & Chemical	148,095		91,350
Storage Solutions	194,397		201,875
Industrial	78,348		67,569
Unallocated assets	55,562		68,875
Total segment assets	$	635,790	$	564,967

Basis of Presentation Basis of Presentation - Narrative (Details) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended	6 Months Ended
	Dec. 31, 2016	Dec. 31, 2016	Dec. 31, 2015
New Accounting Pronouncements and Changes in Accounting Principles [Abstract]
Effect of new accounting standard compared to old standard	$ 0.1	$ 0.5
Effect of adoption of new accounting standard compared to old standard, EPS	$ 0.01	$ 0.02
New Accounting Pronouncement or Change in Accounting Principle, Description of Prior-period Information Retrospectively Adjusted			The amendments relating to the presentation of excess tax benefits and tax deficiencies in the statement of cash flows were applied retrospectively. The effect of the retrospective adjustment was to eliminate the presentation of an operating cash outflow and a financing cash inflow for excess tax benefits on exercised stock options and vesting of deferred shares. These eliminations increased net cash provided by operating activities by $3.2 million and decreased net cash provided by financing activities by $3.2 million for the six months ended December 31, 2015. Net cash flows did not change as a result of the retrospective adjustment.

Acquisitions (Details) - USD ($) $ in Thousands			6 Months Ended
Acquisitions (Details) - USD ($) $ in Thousands	Dec. 12, 2016	Feb. 01, 2016	Dec. 31, 2016	Jun. 30, 2016
Business Acquisition [Line Items]
Goodwill, Acquired During Period			$ 35,028
Goodwill			113,019	$ 78,293
Houston Interests, LLC [Member]
Business Acquisition [Line Items]
Cash paid for equity interest	$ 46,000
Acquisition related adjustment for working capital settlement	4,129
Current assets	20,803
Property, plant and equipment	942
Goodwill	35,028
Other intangible assets	10,220
Total assets acquired	66,993
Current liabilities	16,674
Other long-term liabilities	190
Net assets acquired	50,129
Cash acquired	10,331
Business Combination, Consideration Transferred	$ 39,798
Warranty reserve working capital provision			$ 2,600
Baillie Tank Equipment, Ltd. [Member]
Business Acquisition [Line Items]
Current assets		$ 5,574
Property, plant and equipment		4,347
Goodwill		7,030
Other intangible assets		720
Other assets		233
Total assets acquired		17,904
Current liabilities		1,669
Deferred income taxes		329
Long-term debt		1,858
Other long-term liabilities		407
Net assets acquired		13,641
Cash acquired		592
Business Combination, Consideration Transferred		$ 13,049

Acquisitions (Narrative) (Details) - USD ($) $ in Thousands			3 Months Ended	6 Months Ended	12 Months Ended
Acquisitions (Narrative) (Details) - USD ($) $ in Thousands	Dec. 12, 2016	Feb. 01, 2016	Dec. 31, 2016	Dec. 31, 2016	Jun. 30, 2016
Houston Interests, LLC [Member]
Business Acquisition [Line Items]
Current assets	$ 20,803
Business Acquisition, Effective Date of Acquisition	Dec. 12, 2016
Business Acquisition, Name of Acquired Entity	Houston Interests, LLC
Business Combination, Consideration Transferred	$ 39,798
Acquisition costs				$ 400
Revenue of Acquiree since Acquisition Date, Actual			$ 2,300
Earnings of Acquiree since Acquisition Date, Actual			(200)
Baillie Tank Equipment, Ltd. [Member]
Business Acquisition [Line Items]
Current assets		$ 5,574
Business Acquisition, Effective Date of Acquisition		Feb. 01, 2016
Business Acquisition, Name of Acquired Entity		Baillie Tank Equipment, Ltd. (“BTE”)
Business Combination, Consideration Transferred		$ 13,049
Economic purchase price		$ 15,400
Acquisition costs					$ 800
Revenue of Acquiree since Acquisition Date, Actual			1,800	2,800
Earnings of Acquiree since Acquisition Date, Actual			$ 700	$ 300

Acquisitions Pro Forma (Details) - Houston Interests, LLC [Member] - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		6 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2016	Dec. 31, 2015
Business Acquisition [Line Items]
Revenues	$ 329,523	$ 357,975	$ 690,485	$ 712,158
Net income attributable to Matrix Service Company	$ 7,884	$ 9,445	$ 18,763	$ 17,928
Basic earnings per common share	$ 0.30	$ 0.35	$ 0.71	$ 0.68
Diluted earnings per common share	$ 0.29	$ 0.35	$ 0.70	$ 0.67

Acquisitions Pro Forma Narrative (Details) - Houston Interests, LLC [Member] - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2016	Dec. 31, 2015
Business Acquisition [Line Items]
Pro forma acquisition costs				$ 3.0
Pro forma acquisition costs, amortized over time	$ 0.4	$ 0.3	$ 0.8	0.5
Pro forma interest expense	0.3		0.7
Pro forma depreciation and amortization expense	0.2	0.5	0.3	0.9
Pro forma income tax expense	$ 1.9	$ 2.5	$ 3.3	$ 2.1

Uncompleted Contracts - Gross and Net Amounts of Uncompleted Contracts (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Jun. 30, 2016
Disclosure Customer Contracts Additional Information [Abstract]
Costs incurred and estimated earnings recognized on uncompleted contracts	$ 1,983,345	$ 1,875,014
Billings on uncompleted contracts	1,977,907	1,829,340
Total	5,438	45,674
Shown on balance sheet as:
Costs and estimated earnings in excess of billings on uncompleted contracts	80,296	104,001
Billings on uncompleted contracts in excess of costs and estimated earnings	74,858	58,327
Total	$ 5,438	$ 45,674

Uncompleted Contracts - Additional Information (Detail) - USD ($) $ in Millions	Dec. 31, 2016	Jun. 30, 2016
Customer Contracts [Line Items]
Contract Receivable Retainage, Due in Next Twelve Months	$ 51.4	$ 29.7
Contract Receivable Retainage, Due after Next Twelve Months		$ 0.3

Intangible Assets Including Goodwill - Carrying Value of Goodwill By Segment (Details) - USD ($)
$ in Thousands

6 Months Ended

Dec. 31, 2016

Dec. 12, 2016

Feb. 01, 2016

Goodwill [Line Items]

Goodwill

$ 78,293

Goodwill [Roll Forward]

Net balance at June 30, 2015

78,293

Goodwill, Acquired During Period

35,028

Goodwill, Purchase Accounting Adjustments

Translation adjustment

^[1]

(390)

Net balance at December 31, 2016

113,019

Electrical Infrastructure [Member]

Goodwill [Line Items]

Goodwill

42,170

Goodwill [Roll Forward]

Net balance at June 30, 2015

42,170

Goodwill, Acquired During Period

Goodwill, Purchase Accounting Adjustments

Translation adjustment

^[1]

(227)

Net balance at December 31, 2016

41,943

Oil Gas & Chemical [Member]

Goodwill [Line Items]

Goodwill

14,008

Goodwill [Roll Forward]

Net balance at June 30, 2015

14,008

Goodwill, Acquired During Period

28,723

Goodwill, Purchase Accounting Adjustments

Translation adjustment

Net balance at December 31, 2016

42,731

Storage Solutions [Member]

Goodwill [Line Items]

Goodwill

16,681

Goodwill [Roll Forward]

Net balance at June 30, 2015

16,681

Goodwill, Acquired During Period

Goodwill, Purchase Accounting Adjustments

Translation adjustment

^[1]

(121)

Net balance at December 31, 2016

16,648

Industrial [Member]

Goodwill [Line Items]

Goodwill

5,434

Goodwill [Roll Forward]

Net balance at June 30, 2015

5,434

Goodwill, Acquired During Period

6,305

Goodwill, Purchase Accounting Adjustments

Translation adjustment

^[1]

(42)

Net balance at December 31, 2016

$ 11,697

Baillie Tank Equipment, Ltd. [Member]

Goodwill [Line Items]

Goodwill

$ 7,030

Houston Interests, LLC [Member]

Goodwill [Line Items]

Goodwill

$ 35,028

[1]

Intangible Assets Including Goodwill - Carrying Value of Other Intangible Assets (Details) - USD ($) $ in Thousands		3 Months Ended		6 Months Ended
	Dec. 12, 2016	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2016	Dec. 31, 2015	Jun. 30, 2016
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Gross		$ 43,884		$ 43,884		$ 33,826
Accumulated Amortization		(14,533)		(14,533)		(12,827)
Net Carrying Amount		29,351		29,351		20,999
Total intangible assets, net carrying amount		29,351		29,351		20,999
Amortization expense		1,000	$ 800	1,800	$ 1,600
Intellectual Property [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Gross		2,579		2,579		2,579
Accumulated Amortization		(1,336)		(1,336)		(1,246)
Net Carrying Amount		1,243		$ 1,243		1,333
Intellectual Property [Member] \| Minimum [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Asset, Useful Life				9 years	9 years
Intellectual Property [Member] \| Maximum [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Asset, Useful Life				15 years	15 years
Customer Relationships [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Gross		38,057		$ 38,057		28,179
Accumulated Amortization		(10,914)		(10,914)		(9,655)
Net Carrying Amount		27,143		$ 27,143		18,524
Customer Relationships [Member] \| Minimum [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Asset, Useful Life				1 year	1 year 6 months
Customer Relationships [Member] \| Maximum [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Asset, Useful Life				15 years	15 years
Noncompete Agreements [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Gross		1,453		$ 1,453		1,453
Accumulated Amortization		(1,192)		(1,192)		(1,102)
Net Carrying Amount		261		$ 261		351
Noncompete Agreements [Member] \| Minimum [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Asset, Useful Life				4 years	4 years
Noncompete Agreements [Member] \| Maximum [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Asset, Useful Life				5 years	5 years
Trade Names [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Gross		1,795		$ 1,795		1,615
Accumulated Amortization		(1,091)		(1,091)		(824)
Net Carrying Amount		704		$ 704		$ 791
Trade Names [Member] \| Minimum [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Asset, Useful Life				1 year	3 years
Trade Names [Member] \| Maximum [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Asset, Useful Life				5 years	5 years
Houston Interests, LLC [Member]
Finite-Lived Intangible Assets [Line Items]
Amortization expense		$ 100
Houston Interests, LLC [Member] \| Customer Relationships [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Gross	$ 10,000
Houston Interests, LLC [Member] \| Customer Relationships [Member] \| Minimum [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Asset, Useful Life	1 year
Houston Interests, LLC [Member] \| Customer Relationships [Member] \| Maximum [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Asset, Useful Life	9 years
Houston Interests, LLC [Member] \| Trade Names [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Gross	$ 200
Finite-Lived Intangible Asset, Useful Life	1 year

Intangible Assets Including Goodwill - Additional Information (Detail) - USD ($) $ in Thousands		3 Months Ended		6 Months Ended
	Dec. 12, 2016	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2016	Dec. 31, 2015	Jun. 30, 2016
Goodwill and Intangible Assets Disclosure [Abstract]
Amortization expense		$ 1,000	$ 800	$ 1,800	$ 1,600
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Gross		43,884		43,884		$ 33,826
Intellectual Property [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Gross		2,579		2,579		2,579
Customer Relationships [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Gross		38,057		38,057		28,179
Noncompete Agreements [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Gross		1,453		1,453		1,453
Trade Names [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Gross		1,795		$ 1,795		$ 1,615
Minimum [Member] \| Intellectual Property [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Asset, Useful Life				9 years	9 years
Minimum [Member] \| Customer Relationships [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Asset, Useful Life				1 year	1 year 6 months
Minimum [Member] \| Noncompete Agreements [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Asset, Useful Life				4 years	4 years
Minimum [Member] \| Trade Names [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Asset, Useful Life				1 year	3 years
Maximum [Member] \| Intellectual Property [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Asset, Useful Life				15 years	15 years
Maximum [Member] \| Customer Relationships [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Asset, Useful Life				15 years	15 years
Maximum [Member] \| Noncompete Agreements [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Asset, Useful Life				5 years	5 years
Maximum [Member] \| Trade Names [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Asset, Useful Life				5 years	5 years
Houston Interests, LLC [Member]
Goodwill and Intangible Assets Disclosure [Abstract]
Amortization expense		$ 100
Houston Interests, LLC [Member] \| Customer Relationships [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Gross	$ 10,000
Houston Interests, LLC [Member] \| Trade Names [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Gross	$ 200
Finite-Lived Intangible Asset, Useful Life	1 year
Houston Interests, LLC [Member] \| Minimum [Member] \| Customer Relationships [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Asset, Useful Life	1 year
Houston Interests, LLC [Member] \| Maximum [Member] \| Customer Relationships [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Asset, Useful Life	9 years

Intangible Assets Including Goodwill Future Expected Amortization Expense (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Jun. 30, 2016
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Amortization Expense, Remainder of Fiscal Year	$ 3,100
Finite-Lived Intangible Assets, Amortization Expense, Year Two	4,757
Finite-Lived Intangible Assets, Amortization Expense, Year Three	3,482
Finite-Lived Intangible Assets, Amortization Expense, Year Four	3,472
Finite-Lived Intangible Assets, Amortization Expense, Year Five	3,454
Finite-Lived Intangible Assets, Amortization Expense, Year Five	2,615
Finite-Lived Intangible Assets, Amortization Expense, after Year Five	8,471
Finite-Lived Intangible Assets, Net	$ 29,351	$ 20,999

Debt - Additional Information (Detail) $ in Thousands		3 Months Ended	6 Months Ended
Debt - Additional Information (Detail) $ in Thousands	Feb. 08, 2017	Dec. 31, 2016 USD ($) Ratio	Dec. 31, 2016 USD ($)	Jun. 30, 2016 USD ($)
Credit Agreement Terms
Document Period End Date			Dec. 31, 2016
Senior secured revolving credit facility		$ 250,000	$ 250,000	$ 200,000
Senior Leverage Ratio, Acquisition Period, Maximum \| Ratio		3.00
Senior Leverage Ratio, Acquisition Period, Minimum \| Ratio		1.00
Senior Leverage Ratio, Maximum \| Ratio		2.50
Senior Leverage Ratio, Minimum \| Ratio		1.00
Prior Sublimit on Canadian Dollar Borrowings		$ 40,000
Sublimit on Canadian Dollar Borrowings		50,000
Consolidated EBITDA as defined in the Credit Agreement			84,000
Consolidated funded indebtedness		$ 80,000	$ 80,000
Subsequent Event, Description	<div style="font-family:Times New Roman;font-size:10pt;"><div style="line-height:120%;padding-top:12px;text-align:justify;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;font-style:italic;">Subsequent Event</font></div><div style="line-height:120%;padding-top:12px;text-align:justify;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">On February 8, 2017, the Company entered into the Fourth Amended and Restated Credit Agreement (the "New Credit Agreement"), by and among the Company and certain foreign subsidiaries, as Borrowers, various subsidiaries of the Company, as Guarantors, JPMorgan Chase Bank, N.A., as Administrative Agent, Sole Lead Arranger and Sole Bookrunner, and the other Lenders party thereto, which replaced the Third Amended and Restated Credit Agreement dated as of November 7, 2011, as previously amended (the "Prior Credit Agreement"). </font></div><div style="line-height:120%;padding-top:12px;text-align:justify;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">The New Credit Agreement provides for a five-year senior secured revolving credit facility of $300.0 million that expires February 8, 2022, which replaces the $250.0 million senior secured revolving credit facility under the Prior Credit Agreement. The new credit facility may be used for working capital, acquisitions, capital expenditures, issuances of letters of credit and other lawful purposes. </font></div><div style="line-height:120%;padding-bottom:12px;padding-top:12px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">The New Credit Agreement includes the following covenants and borrowing limitations:</font></div><table cellpadding="0" cellspacing="0" style="font-family:Times New Roman; font-size:10pt;"><tr><td style="width:96px;" rowspan="1" colspan="1"></td><td rowspan="1" colspan="1"></td></tr><tr><td style="vertical-align:top" rowspan="1" colspan="1"><div style="line-height:120%;font-size:10pt;padding-left:60px;"><font style="font-family:inherit;font-size:10pt;">•</font></div></td><td style="vertical-align:top;" rowspan="1" colspan="1"><div style="line-height:120%;text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">Our Leverage Ratio, determined as of the end of each fiscal quarter, may not exceed 3.00 to 1.00. </font></div></td></tr></table><table cellpadding="0" cellspacing="0" style="padding-top:12px;font-family:Times New Roman; font-size:10pt;"><tr><td style="width:96px;" rowspan="1" colspan="1"></td><td rowspan="1" colspan="1"></td></tr><tr><td style="vertical-align:top" rowspan="1" colspan="1"><div style="line-height:120%;font-size:10pt;padding-left:60px;"><font style="font-family:inherit;font-size:10pt;">•</font></div></td><td style="vertical-align:top;" rowspan="1" colspan="1"><div style="line-height:120%;text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">As with the Prior Credit Agreement, we are required to maintain a Fixed Charge Coverage Ratio, determined as of the end of each fiscal quarter, greater than or equal to 1.25 to 1.00.</font></div></td></tr></table><table cellpadding="0" cellspacing="0" style="padding-top:12px;font-family:Times New Roman; font-size:10pt;"><tr><td style="width:96px;" rowspan="1" colspan="1"></td><td rowspan="1" colspan="1"></td></tr><tr><td style="vertical-align:top" rowspan="1" colspan="1"><div style="line-height:120%;font-size:10pt;padding-left:60px;"><font style="font-family:inherit;font-size:10pt;">•</font></div></td><td style="vertical-align:top;" rowspan="1" colspan="1"><div style="line-height:120%;text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">Asset dispositions (other than dispositions in which 100% of the net cash proceeds therefrom are reinvested into the Company and dispositions of inventory and obsolete or unneeded equipment in the ordinary course of business) are limited to $20.0 million per 12-month period.</font></div></td></tr></table><div style="line-height:120%;padding-left:4px;padding-top:12px;text-align:justify;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">The new credit facility will include a sub-facility for revolving loans denominated in Australian Dollars, Canadian Dollars, Euros and Pounds Sterling in an aggregate amount not to exceed the U.S. Dollar equivalent of $75.0 million and a $200.0 million sublimit for letters of credit. Each revolving borrowing under the New Credit Agreement will bear interest at a rate per annum equal to:</font></div><table cellpadding="0" cellspacing="0" style="padding-top:12px;font-family:Times New Roman; font-size:10pt;"><tr><td style="width:96px;" rowspan="1" colspan="1"></td><td rowspan="1" colspan="1"></td></tr><tr><td style="vertical-align:top" rowspan="1" colspan="1"><div style="line-height:120%;font-size:10pt;padding-left:60px;"><font style="font-family:inherit;font-size:10pt;">•</font></div></td><td style="vertical-align:top;" rowspan="1" colspan="1"><div style="line-height:120%;text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">The ABR or the Adjusted LIBO Rate, in the case of revolving loans denominated in U.S. Dollars;</font></div></td></tr></table><table cellpadding="0" cellspacing="0" style="padding-top:12px;font-family:Times New Roman; font-size:10pt;"><tr><td style="width:96px;" rowspan="1" colspan="1"></td><td rowspan="1" colspan="1"></td></tr><tr><td style="vertical-align:top" rowspan="1" colspan="1"><div style="line-height:120%;font-size:10pt;padding-left:60px;"><font style="font-family:inherit;font-size:10pt;">•</font></div></td><td style="vertical-align:top;" rowspan="1" colspan="1"><div style="line-height:120%;text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">The Canadian Prime Rate or the CDOR rate, in the case of revolving loans denominated in Canadian Dollars;</font></div></td></tr></table><table cellpadding="0" cellspacing="0" style="padding-top:12px;font-family:Times New Roman; font-size:10pt;"><tr><td style="width:96px;" rowspan="1" colspan="1"></td><td rowspan="1" colspan="1"></td></tr><tr><td style="vertical-align:top" rowspan="1" colspan="1"><div style="line-height:120%;font-size:10pt;padding-left:60px;"><font style="font-family:inherit;font-size:10pt;">•</font></div></td><td style="vertical-align:top;" rowspan="1" colspan="1"><div style="line-height:120%;text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">The Adjusted LIBO Rate, in the case of revolving loans denominated in Pounds Sterling or Australian Dollars;</font></div></td></tr></table><table cellpadding="0" cellspacing="0" style="padding-top:12px;font-family:Times New Roman; font-size:10pt;"><tr><td style="width:96px;" rowspan="1" colspan="1"></td><td rowspan="1" colspan="1"></td></tr><tr><td style="vertical-align:top" rowspan="1" colspan="1"><div style="line-height:120%;font-size:10pt;padding-left:60px;"><font style="font-family:inherit;font-size:10pt;">•</font></div></td><td style="vertical-align:top;" rowspan="1" colspan="1"><div style="line-height:120%;text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">The EURIBO Rate, in the case of revolving loans denominated in Euros,</font></div></td></tr></table><div style="line-height:120%;text-align:justify;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br clear="none"/></font></div><div style="line-height:120%;text-align:justify;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">in each case, plus the Applicable Margin, which is based on the Company's Leverage Ratio. The Applicable Margin on ABR loans ranges between 0.625% and 1.625%. The Applicable Margin for Adjusted LIBO, EURIBO and CDOR loans ranges between 1.625% and 2.625% and the Applicable Margin for Canadian Prime Rate loans ranges between 2.125% and 3.125%.</font></div><div style="line-height:120%;padding-top:12px;text-align:justify;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">The unused credit facility fee is between 0.20% and 0.45% based on the Leverage Ratio.</font></div></div>

Debt - Availability Under The Senior Credit Facility (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Jun. 30, 2016
Debt Disclosure [Abstract]
Senior credit facility	$ 250,000	$ 200,000
Capacity Constraint Due To Senior Leverage Ratio	0	20,138
Line Of Credit Facility Maximum Borrowing Capacity After Consideration Of Capacity Constraint	250,000	179,862
Line of Credit Facility, Amount Outstanding	72,412	0
Letters of credit subject to the credit facility	15,378	20,755
Availability under the senior credit facility	$ 162,210	$ 159,107

- Definition

The carrying value as of the balance sheet date of the current and noncurrent portions of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement.

+ References + Details

Income Taxes Income Taxes (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
Income Taxes Income Taxes (Details) - USD ($) $ in Millions	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2016	Dec. 31, 2015
Income Tax Disclosure [Abstract]
Effective Income Tax Rate Reconciliation, Percent	32.80%	32.10%	33.30%	33.80%
Effective Income Tax Rate Reconciliation, Other Adjustments, Amount	$ 0.3	$ 0.9	$ 0.5	$ 1.4

Commitments and Contingencies - Additional Information (Detail) - USD ($) $ in Millions	Dec. 31, 2016	Jun. 30, 2016
Power Generation Project Unapproved Change Orders and Claims [Line Items]
Unapproved change orders and claims	$ 14.4	$ 10.3

Earnings per Common Share - Computation of Basic and Diluted Earnings Per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2016	Dec. 31, 2015
Earnings Per Share, Basic [Abstract]
Net income	$ 5,250	$ 5,431	$ 14,592	$ 15,372
Weighted average shares outstanding - basic (shares)	26,553	26,721	26,470	26,598
Basic EPS (US$ per share)	$ 0.20	$ 0.20	$ 0.55	$ 0.58
Earnings Per Share, Diluted [Abstract]
Dilutive stock options	55	76	53	81
Dilutive nonvested deferred shares	224	451	319	550
Diluted weighted average shares (shares)	26,832	27,248	26,842	27,229
Diluted EPS (US$ per share)	$ 0.20	$ 0.20	$ 0.54	$ 0.56

Earnings per Common Share - Antidilutive Securities Excluded from the Calculation of Diluted Earnings Per Share (Details) - shares shares in Thousands	3 Months Ended		6 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2016	Dec. 31, 2015
Nonvested Deferred Shares [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Total antidilutive securities	64	86	137	105

Segment Information - Results of Operations (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2016	Dec. 31, 2015	Jun. 30, 2016
Segment Reporting Information [Line Items]
Gross revenues	$ 314,024	$ 325,907	$ 662,254	$ 646,396
Consolidated revenues	312,655	323,529	654,436	642,860
Gross profit	28,212	30,005	60,490	64,589
Operating income	8,237	4,935	22,538	20,036
Segment assets	635,790		635,790		$ 564,967
Goodwill	113,019		113,019		78,293
Electrical Infrastructure [Member]
Segment Reporting Information [Line Items]
Gross revenues	103,158	91,398	191,183	157,023
Consolidated revenues	103,158	91,398	191,183	157,023
Gross profit	7,225	4,021	12,475	8,729
Operating income	2,164	(723)	3,221	477
Segment assets	159,388		159,388		135,298
Goodwill	41,943		41,943		42,170
Oil Gas & Chemical [Member]
Segment Reporting Information [Line Items]
Gross revenues	56,913	63,472	94,741	132,431
Consolidated revenues	55,714	61,540	88,256	129,851
Gross profit	2,431	5,971	2,432	11,654
Operating income	(1,950)	(3,029)	(4,855)	(1,613)
Segment assets	148,095		148,095		91,350
Goodwill	42,731		42,731		14,008
Storage Solutions [Member]
Segment Reporting Information [Line Items]
Gross revenues	128,927	122,647	328,577	267,217
Consolidated revenues	128,757	122,169	328,279	266,405
Gross profit	17,071	14,426	43,524	34,658
Operating income	8,242	6,374	25,015	17,923
Segment assets	194,397		194,397		201,875
Goodwill	16,648		16,648		16,681
Industrial [Member]
Segment Reporting Information [Line Items]
Gross revenues	25,026	48,390	47,753	89,725
Consolidated revenues	25,026	48,422	46,718	89,581
Gross profit	1,485	5,587	2,059	9,548
Operating income	(219)	2,313	(843)	3,249
Segment assets	78,348		78,348		67,569
Goodwill	11,697		11,697		5,434
Other Segments [Member]
Segment Reporting Information [Line Items]
Segment assets	55,562		55,562		$ 68,875
Intersegment Eliminations [Member]
Segment Reporting Information [Line Items]
Gross revenues	1,369	2,378	7,818	3,536
Intersegment Eliminations [Member] \| Oil Gas & Chemical [Member]
Segment Reporting Information [Line Items]
Gross revenues	1,199	1,932	6,485	2,580
Intersegment Eliminations [Member] \| Storage Solutions [Member]
Segment Reporting Information [Line Items]
Gross revenues	170	478	298	812
Intersegment Eliminations [Member] \| Industrial [Member]
Segment Reporting Information [Line Items]
Gross revenues	$ 0	$ (32)	$ 1,035	$ 144