Matrix Service (MTRX) 10-K 10 Sep 24 2024 FY Annual report Financial data

Document and Entity Information

Document and Entity Information - USD ($) $ in Thousands	12 Months Ended
	Jun. 30, 2024	Sep. 09, 2024	Dec. 31, 2023
Cover [Abstract]
Document Type	10-K
Document Annual Report	true
Document Period End Date	Jun. 30, 2024
Amendment Flag	false
Document Transition Report	false
Entity File Number	001-15461
Entity Registrant Name	MATRIX SERVICE CO
Entity Central Index Key	0000866273
Current Fiscal Year End Date	--06-30
Document Fiscal Year Focus	2024
Document Fiscal Period Focus	FY
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	73-1352174
Entity Address, Address Line One	15 E. 5th Street
Entity Address, Address Line Two	Suite 1100
Entity Address, City or Town	Tulsa,
Entity Address, State or Province	OK
Entity Address, Postal Zip Code	74103
City Area Code	918
Local Phone Number	838-8822
Title of 12(b) Security	Common Stock, par value $0.01 per share
Trading Symbol	MTRX
Security Exchange Name	NASDAQ
Entity Well-known Seasoned Issuer	No
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Accelerated Filer
Entity Small Business	true
Entity Emerging Growth Company	false
ICFR Auditor Attestation Flag	true
Entity Shell Company	false
Entity Public Float			$ 256,400
Entity Common Stock, Shares Outstanding		27,548,310
Documents Incorporated by Reference	Documents Incorporated by Reference Certain sections of the registrant's definitive proxy statement relating to the registrant's 2024 annual meeting of stockholders, which definitive proxy statement will be filed within 120 days of the end of the registrant's fiscal year, are incorporated by reference into Part III of this Form 10-K.
Auditor Firm ID	34
Auditor Name	DELOITTE & TOUCHE LLP
Auditor Location	Tulsa, Oklahoma
Document Financial Statement Error Correction [Flag]	false

Consolidated Statements of Inco

Consolidated Statements of Income - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2022
Income Statement [Abstract]
Revenue	$ 728,213	$ 795,020	$ 707,780
Cost of revenue	(687,740)	(764,200)	(708,986)
Gross profit (loss)	40,473	30,820	(1,206)
Selling, general and administrative expenses	70,085	68,249	67,690
Goodwill impairment	0	12,316	18,312
Restructuring costs	501	3,142	646
Operating loss	(30,113)	(52,887)	(87,854)
Other income (expense):
Interest expense	(1,130)	(2,024)	(2,951)
Interest income	1,339	290	90
Other (Note 3)	4,892	1,860	32,432
Income (Loss) Attributable to Parent, before Tax	(25,012)	(52,761)	(58,283)
Provision (benefit) for federal, state and foreign income taxes	(36)	(400)	5,617
Net Income (Loss) Attributable to Parent	$ (24,976)	$ (52,361)	$ (63,900)
Weighted average common shares outstanding:
Basic loss per common share	$ (0.91)	$ (1.94)	$ (2.39)
Diluted loss per common share	$ (0.91)	$ (1.94)	$ (2.39)
Basic (in shares)	27,379	26,988	26,733
Diluted (in shares)	27,379	26,988	26,733

Consolidated Statements of Comp

Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	12 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2022
Other comprehensive income (loss), net of tax:
Comprehensive loss	$ (25,742)	$ (52,955)	$ (65,326)
Net Income (Loss) Attributable to Parent	(24,976)	(52,361)	(63,900)
Translation Adjustment Functional to Reporting Currency, Net of Tax	$ (766)	$ (594)	$ (1,426)

Consolidated Statements of Co_2

Consolidated Statements of Comprehensive Income (Parentheticals) - USD ($) $ in Thousands	12 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2022
Statement of Comprehensive Income [Abstract]
Foreign currency translation adjustments, tax effect	$ 0	$ 0	$ 71

Consolidated Balance Sheets

Consolidated Balance Sheets - USD ($) $ in Thousands	Jun. 30, 2024	Jun. 30, 2023
Current assets:
Cash and cash equivalents	$ 115,615	$ 54,812
Accounts Receivable, after Allowance for Credit Loss, Current	138,987	145,764
Costs and estimated earnings in excess of billings on uncompleted contracts	33,893	44,888
Inventories	8,839	7,437
Income taxes receivable	180	496
Other current assets	12	3,118
Prepaid Expense, Current	4,065	5,741
Total current assets	301,591	262,256
Restricted Cash	25,000	25,000
Property, plant and equipment, net	43,498	47,545
Operating lease right-of-use assets	19,150	21,799
Goodwill	29,023	29,120
Other intangible assets	1,651	3,066
Other assets	31,438	11,718
Total assets	451,351	400,504
Current liabilities:
Accounts payable	65,629	76,365
Billings on uncompleted contracts in excess of costs and estimated earnings	171,308	85,436
Accrued wages and benefits	15,878	13,679
Accrued insurance	4,605	5,579
Operating lease liabilities	3,739	4,661
Other accrued expenses	3,956	1,815
Total current liabilities	265,115	187,535
Deferred income taxes	25	26
Operating lease liabilities	19,156	20,660
Borrowings under asset-backed credit facility	0	10,000
Other liabilities, non-current	2,873	799
Total liabilities	287,169	219,020
Stockholders' equity:
Common stock—$.01 par value; 60,000,000 shares authorized; 27,888,217 shares issued as of June 30, 2024 and June 30, 2023; 27,308,795 and 27,047,318 shares outstanding as of June 30, 2024 and June 30, 2023, respectively	279	279
Additional paid-in capital	145,580	140,810
Retained earnings	33,941	58,917
Accumulated other comprehensive loss	(9,535)	(8,769)
Treasury stock, at cost — 579,422 and 840,899 shares as of June 30, 2024 and June 30, 2023, respectively	(6,083)	(9,753)
Total stockholders' equity	164,182	181,484
Total liabilities and stockholders' equity	$ 451,351	$ 400,504

Consolidated Balance Sheets (Pa

Consolidated Balance Sheets (Parenthetical) - $ / shares	Jun. 30, 2024	Jun. 30, 2023
Statement of Financial Position [Abstract]
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
Common Stock, shares outstanding	27,308,795	27,047,318
Treasury Stock, Shares	579,422	840,899

Consolidated Statements of Cash

Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2022
Adjustments to reconcile net income (loss) to net cash provided (used) by operating activities:
Net Income (Loss) Attributable to Parent	$ (24,976)	$ (52,361)	$ (63,900)
Depreciation and amortization	11,023	13,694	15,254
Goodwill and other intangible asset impairment (Note 4)	0	12,316	18,312
Stock-based compensation expense	7,745	6,791	7,877
Deferred income tax	0	0	5,358
Gain on sale of property, plant and equipment	(4,923)	(2,841)	(33,114)
Accelerated amortization of deferred debt amendment fees (Note 5)	0	0	1,518
Other	1,362	147	907
Changes in operating assets and liabilities increasing (decreasing) cash:
Accounts receivable	(12,077)	8,663	(6,587)
Costs and estimated earnings in excess of billings on uncompleted contracts	10,995	(136)	(13,978)
Inventories	(1,402)	2,506	(2,632)
Other assets and liabilities	3,897	10,538	(530)
Accounts payable	(10,385)	1,210	13,654
Billings on uncompleted contracts in excess of costs and estimated earnings	85,872	20,330	11,274
Accrued expenses	5,440	(10,610)	(7,609)
Net cash provided (used) by operating activities	72,571	10,247	(54,196)
Investing activities:
Capital expenditures	(6,994)	(9,009)	(3,345)
Proceeds from asset sales (Note 3)	6,049	6,466	39,018
Net cash provided (used) by investing activities	(945)	(2,543)	35,673
Financing activities:
Advances under asset-backed credit facility	10,000	10,000	20,000
Repayments of advances under asset-backed credit facility	(20,000)	(15,000)	(5,000)
Payment of debt amendment fees	(100)	0	(1,263)
Issuances of common stock	0	0	199
Proceeds from issuance of common stock under employee stock purchase plan	184	252	270
Repurchase of common stock for payment of statutory taxes due on equity-based compensation	(456)	(310)	(853)
Repayment of principal portion of long-term liability	0	0	(654)
Net cash provided (used) by financing activities	(10,372)	(5,058)	12,699
Effect of exchange rate changes on cash	(451)	(205)	(683)
Net increase (decrease) in cash and cash equivalents	60,803	2,441	(6,507)
Cash, cash equivalents, and restricted cash, beginning of period (Note1)	79,812	77,371	83,878
Cash, cash equivalents, and restricted cash, end of period (Note1)	140,615	79,812	77,371
Other cash flow information:
Cash received during the period for income taxes	(165)	(13,337)	(2,864)
Cash paid during the period for interest	880	2,093	2,773
Non-cash investing and financing activities:
Purchases of property, plant and equipment on account	$ 140	$ 104	$ 54

Consolidated Statements of Chan

Consolidated Statements of Changes in Stockholders' Equity - USD ($) $ in Thousands	Total	Common Stock	Additional Paid-In Capital	Retained Earnings	Accumulated Other Comprehensive Income(Loss)	Treasury Stock
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Treasury Stock, Shares						1,338,779
Common Stock, Shares, Outstanding		27,888,217
Balances, beginning at Jun. 30, 2021	$ 285,539	$ 279	$ 137,575	$ 175,178	$ (6,749)	$ (20,744)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net Income (Loss) Attributable to Parent	(63,900)			(63,900)
Other comprehensive income (loss)	(1,426)				(1,426)
Restricted Stock, Shares Issued Net of Shares for Tax Withholdings						(268,403)
Restricted Stock, Value, Shares Issued Net of Tax Withholdings	0		(5,102)			$ 5,102
Treasury Shares Sold to Employee Stock Purchase Plan	270		(307)			$ 577
Treasury Stock, Shares, Acquired						76,703
Exercise of stock options	199		(189)			$ 388
Stock-based compensation expense	7,877		7,877
Balances, ending at Jun. 30, 2022	$ 227,706	$ 279	139,854	111,278	(8,175)	$ (15,530)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Employee Stock Purchase Plans, shares	29,826					(29,826)
Stock Issued During Period, Shares, Stock Options Exercised						(19,550)
Treasury Stock, Common, Value	$ (853)					$ (853)
Treasury Stock, Shares						1,097,703
Common Stock, Shares, Outstanding		27,888,217
Net Income (Loss) Attributable to Parent	(52,361)			(52,361)
Other comprehensive income (loss)	(594)				(594)
Restricted Stock, Shares Issued Net of Shares for Tax Withholdings						(259,529)
Restricted Stock, Value, Shares Issued Net of Tax Withholdings	0		(5,150)			$ 5,150
Treasury Shares Sold to Employee Stock Purchase Plan	252		(685)			$ 937
Treasury Stock, Shares, Acquired						52,864
Stock-based compensation expense	6,791		6,791
Balances, ending at Jun. 30, 2023	$ 181,484	$ 279	140,810	58,917	(8,769)	$ (9,753)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Employee Stock Purchase Plans, shares	50,139					(50,139)
Treasury Stock, Common, Value	$ (310)					$ (310)
Treasury Stock, Shares	840,899					840,899
Common Stock, Shares, Outstanding		27,888,217
Net Income (Loss) Attributable to Parent	$ (24,976)			(24,976)
Other comprehensive income (loss)	(766)				(766)
Restricted Stock, Shares Issued Net of Shares for Tax Withholdings						(297,026)
Restricted Stock, Value, Shares Issued Net of Tax Withholdings	0		(3,868)			$ 3,868
Treasury Shares Sold to Employee Stock Purchase Plan	184		(74)			$ 258
Treasury Stock, Shares, Acquired						55,324
Stock-based compensation expense	7,745		7,745
Adjustments to Additional Paid in Capital, Other	967		967
Balances, ending at Jun. 30, 2024	$ 164,182	$ 279	$ 145,580	$ 33,941	$ (9,535)	$ (6,083)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Employee Stock Purchase Plans, shares	19,775					(19,775)
Treasury Stock, Common, Value	$ (456)					$ (456)
Treasury Stock, Shares	579,422					579,422
Common Stock, Shares, Outstanding		27,888,217

Consolidated Statements of Ch_2

Consolidated Statements of Changes in Stockholders' Equity (Parenthetical) - shares	12 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2022
Employee Stock Purchase Plans, shares	19,775	50,139	29,826
Treasury Stock [Member]
Employee Stock Purchase Plans, shares	(19,775)	(50,139)	(29,826)
Open market purchase of treasury shares, shares	55,324	52,864	76,703

Summary of Significant Accounti

Summary of Significant Accounting Policies	12 Months Ended
	Jun. 30, 2024
Accounting Policies [Abstract]
Summary of Significant Accounting Policies	Significant Accounting Policies Organization and Basis of Presentation The consolidated financial statements have been prepared in accordance with accounting principles generally accepted in the United States and include the accounts of Matrix Service Company and its subsidiaries (“Matrix”, the “Company” or “we”, “our”, and “us” are to Matrix Service Company and its subsidiaries), all of which are wholly owned. Intercompany transactions and balances have been eliminated in consolidation. We operate in the United States, Canada, South Korea and Australia. Our reportable segments are Storage and Terminal Solutions, Utility and Power Infrastructure, and Process and Industrial Facilities. Use of Estimates The preparation of financial statements requires management to make estimates and assumptions that affect the amounts reported in the financial statements and accompanying notes. We believe the most significant estimates and judgments are associated with revenue recognition, the recoverability tests that must be periodically performed with respect to our goodwill and other intangible assets, deferred tax assets, and the estimation of loss contingencies, including liabilities associated with litigation and with the self-insured retentions on our insurance programs. Actual results could materially differ from those estimates. Revenue Recognition General Information about our Contracts with Customers Our revenue comes from contracts to provide engineering, procurement, fabrication and construction, repair and maintenance and other services. Our engineering, procurement and fabrication and construction services are usually provided in association with construction projects, which are commonly fixed-price contracts that are billed based on project milestones. Our repair and maintenance services typically are cost reimbursable or time and material based contracts and are billed monthly or, for projects of short duration, at the conclusion of the project. The elapsed time from award to completion of performance may exceed one year for construction projects. Step 1: Contract Identification We do not recognize revenue unless we have identified a contract with a customer. A contract with a customer exists when it has approval and commitment from both parties, the rights and obligations of the parties are identified, payment terms are identified, the contract has commercial substance, and collectability is probable. We also evaluate whether a contract should be combined with other contracts and accounted for as a single contract. This evaluation requires judgment and could change the timing of the amount of revenue and profit recorded for a given period. Step 2: Identify Performance Obligations Next, we identify each performance obligation in the contract. A performance obligation is a promise to provide a distinct good or service or a series of distinct goods or services to the customer. Revenue is recognized separately for each performance obligation in the contract. Many of our contracts have one clearly identifiable performance obligation. However, many of our contracts provide the customer an integrated service that includes two or more of the following services: engineering, procurement, fabrication, construction, repair and maintenance services. For these contracts, we do not consider the integrated services to be distinct within the context of the contract when the separate scopes of work combine into a single commercial objective or capability for the customer. Accordingly, we generally identify one performance obligation in our contracts. The determination of the number of performance obligations in a contract requires significant judgment and could change the timing of the amount of revenue recorded for a given period. Step 3: Determine Contract Price After determining the performance obligations in the contract, we determine the contract price. The contract price is the amount of consideration we expect to receive from the customer for completing the performance obligation(s). In a fixed-price contract, the contract price is a single lump-sum amount. In reimbursable and time and materials based contracts, the contract price is determined by the agreed upon rates or reimbursements for time and materials expended in completing the performance obligation(s) in the contract. A number of our contracts contain various cost and performance incentives and penalties that can either increase or decrease the contract price. These variable consideration amounts are generally earned or incurred based on certain performance metrics, most commonly related to project schedule or cost targets. We estimate variable consideration at the most likely amount of additional consideration to be received (or paid in the case of penalties), provided that meeting the variable condition is probable. We include estimated amounts of variable consideration in the contract price to the extent it is probable that a significant reversal of cumulative revenue recognized will not occur when the uncertainty associated with the variable consideration is resolved. Our estimates of variable consideration and determination of whether to include estimated amounts in the contract price are based largely on an assessment of our anticipated performance and all information (historical, current and forecasted) that is reasonably available to us. We reassess the amount of variable consideration each accounting period until the uncertainty associated with the variable consideration is resolved. Changes in the assessed amount of variable consideration are accounted for prospectively as a cumulative adjustment to revenue recognized in the current period. Step 4: Assign Contract Price to Performance Obligations After determining the contract price, we assign such price to the performance obligation(s) in the contract. If a contract has multiple performance obligations, we assign the contract price to each performance obligation based on the stand-alone selling prices of the distinct services that comprise each performance obligation. Step 5: Recognize Revenue as Performance Obligations are Satisfied We record revenue for contracts with our customers as we satisfy the contracts' performance obligations. We recognize revenue on performance obligations associated with fixed-price contracts for engineering, procurement, fabrication and construction services over time since these services create or enhance assets the customer controls as they are being created or enhanced. We measure progress of satisfying these performance obligations by using the percentage-of-completion method, which is based on costs incurred to date compared to the total estimated costs at completion, since it best depicts the transfer of control of assets being created or enhanced to the customer. We recognize revenue over time for reimbursable and time and material based repair and maintenance contracts since the customer simultaneously receives and consumes the benefit of those services as we perform work under the contract. As a practical expedient allowed under the revenue accounting standards, we record revenue for these contracts in the amount to which we have a right to invoice for the services performed provided that we have a right to consideration from the customer in an amount that corresponds directly with the value of the performance completed to date. Costs incurred may include direct labor, direct materials, subcontractor costs and indirect costs, such as salaries and benefits, supplies and tools, equipment costs and insurance costs. Indirect costs are charged to projects based upon direct costs and overhead allocation rates per dollar of direct costs incurred or direct labor hours worked. Typically, customer contracts will include standard warranties that provide assurance that products and services will function as expected. We do not sell separate warranties. We have numerous contracts that are in various stages of completion which require estimates to determine the forecasted costs at completion. Due to the nature of the work left to be performed on many of our contracts, the estimation of total cost at completion for fixed-price contracts is complex, subject to many variables and requires significant judgment. Estimates of total cost at completion are made each period and changes in these estimates are accounted for prospectively as cumulative adjustments to revenue recognized in the current period. If estimates of costs to complete fixed-price contracts indicate a loss, a provision is made through a contract write-down for the total loss anticipated. Change Orders Contracts are often modified through change orders, which are changes to the agreed upon scope of work. Most of our change orders, which may be priced or unpriced, are for goods or services that are not distinct from the existing contract due to the significant integration of services provided in the context of the contract and are accounted for as if they were part of that existing contract. The effect of a change order on the contract price and our measure of progress for the performance obligation to which it relates is recognized as an adjustment to revenue on a cumulative catch-up basis. For unpriced change orders, we estimate the increase or decrease to the contract price using the variable consideration method described in the Step 3: Determine Contract Price paragraph above. Unpriced change orders are more fully discussed in Note 2 - Revenue. Claims Sometimes we seek claims for amounts in excess of the contract price for delays, errors in specifications and designs, contract terminations, change orders in dispute or other causes of additional costs incurred by us. Recognition of amounts as additional contract price related to claims is appropriate only if there is a legal basis for the claim. The determination of our legal basis for a claim requires significant judgment. We estimate the change to the contract price using the variable consideration method described in the Step 3: Determine Contract Price paragraph above. Claims are more fully discussed in Note 2 - Revenue. Cash, Cash Equivalents and Restricted Cash We include as cash equivalents all investments with original maturities of three months or less which are readily convertible into cash. We have cash on deposit at June 30, 2024 with banks in the United States, Canada, South Korea and Australia in excess of Federal Deposit Insurance Corporation ("FDIC"), Canada Deposit Insurance Corporation ("CDIC"), Korea Deposit Insurance Corporation ("KDIC") and Financial Claims Scheme ("FCS") protection limits, respectively. The United States Dollar equivalent of Canadian, South Korean and Australian deposits totaled $11.8 million as of June 30, 2024. The ABL Facility requires us to maintain a minimum of $25.0 million of restricted cash at all times. Since this cash must be restricted through the maturity date of the ABL Facility, which is beyond one year, we have classified this restricted cash as non-current in our Consolidated Balance Sheets. The following table provides a reconciliation of cash, cash equivalents and restricted cash in the Consolidated Balance Sheets to the total cash, cash equivalents and restricted cash shown in the Consolidated Statements of Cash Flows (in thousands): June 30, 2024 June 30, 2023 Cash and cash equivalents $ 115,615 $ 54,812 Restricted cash 25,000 25,000 Total cash, cash equivalents and restricted cash shown in the Consolidated Statements of Cash Flows $ 140,615 $ 79,812 Accounts Receivable Accounts receivable are carried on a gross basis, less the allowance for credit losses. We estimate the allowance for credit losses based on relevant information about past events, including historical experience, current conditions, and reasonable and supportable forecasts that affect the collectability of the reported amount. Our customers consist primarily of major integrated oil companies, independent refiners and marketers, power companies, petrochemical companies, pipeline companies, mining companies, contractors and engineering firms. We are exposed to the risk of individual customer defaults or depressed cycles in our customers’ industries. To mitigate this risk, many of our contracts require payment as projects progress or advance payment in some circumstances. In addition, in most cases we can place liens against the property, plant or equipment constructed or terminate the contract if a material contract default occurs. Accounts are written off against the allowance for credit losses only after all reasonable collection attempts have been exhausted. Retentions Contract retentions collectable beyond one year are included in Other assets, non-current in the Consolidated Balance Sheets. Loss Contingencies Various legal actions, claims and other contingencies arise in the normal course of our business. Contingencies are recorded in the consolidated financial statements, or are otherwise disclosed, in accordance with ASC 450-20, “Loss Contingencies”. Specific reserves are provided for loss contingencies to the extent we conclude that a loss is both probable and estimable. We use a case-by-case evaluation of the underlying data and update our evaluation as further information becomes known. Inventories Inventories consist primarily of steel plate and pipe and aluminum coil and extrusions. Cost is determined primarily using the average cost method and inventories are stated at the lower of cost or net realizable value. Depreciation Depreciation is computed using the straight-line method over the estimated useful lives of the depreciable assets. Depreciable lives are as follows: buildings—40 years, construction equipment—3 to 15 years, transportation equipment—3 to 5 years, and office equipment and software—3 to 10 years. Leasehold improvements are amortized over the shorter of the useful life of the asset or the lease term. Leases We enter into lease arrangements for real estate, construction equipment and information technology equipment in the normal course of business. We determine if an arrangement is or contains a lease at inception of the arrangement. An arrangement is determined to be a lease if it conveys the right to control the use of identified property and equipment for a period of time in exchange for consideration. Operating lease right-of-use assets are recognized as the present value of future lease payments over the lease term as of the commencement date, plus any lease payments made prior to commencement, and less any lease incentives received. Operating lease liabilities are recognized as the present value of the future lease payments over the lease term as of the commencement date. Operating lease expense is recognized based on the undiscounted future lease payments over the remaining lease term on a straight-line basis. Lease expense related to short-term leases is recognized on a straight-line basis over the lease term. Determinations with respect to lease term (including any renewals and terminations), incremental borrowing rate used to discount lease payments, variable lease expense and future lease payments require the use of judgment based on the facts and circumstances related to each lease. We consider various factors, including economic incentives, intent, past history and business need, to determine the likelihood that a renewal option will be exercised. Right-of-use assets are evaluated for impairment in accordance with our policy for impairment of long-lived assets. Impairment of Long-Lived Assets We evaluate long-lived assets for impairment when events or changes in circumstances indicate, in management’s judgment, that the carrying value of such assets used in operations may not be recoverable. The determination of whether an impairment has occurred is based on management’s estimate of undiscounted future cash flows attributable to the assets as compared to the carrying value of the assets. If an impairment has occurred, the amount of the impairment recognized is determined by estimating the fair value of the assets and, to the extent the carrying value exceeds the fair value of the assets, recording a loss provision. For assets identified to be disposed of in the future, the carrying value of the assets are compared to the estimated fair value less the cost of disposal to determine if an impairment has occurred. Until the assets are disposed of, an estimate of the fair value is redetermined when related events or circumstances change. Goodwill Goodwill represents the excess of the purchase price of acquisitions over the acquisition date fair value of the net identifiable tangible and intangible assets acquired. In accordance with current accounting guidance, goodwill is not amortized and is tested at least annually for impairment at the reporting unit level, which is a level below our reportable segments. We perform our annual impairment test in the fourth quarter of each fiscal year, or in between annual tests whenever events or changes in circumstances indicate the carrying value of goodwill may not be recoverable, to determine whether an impairment exists and to determine the amount of headroom. We define "headroom" as the percentage difference between the fair value of a reporting unit and its carrying value. The goodwill impairment test involves comparing management’s estimate of the fair value of a reporting unit with its carrying value, including goodwill. If the fair value of a reporting unit exceeds its carrying value, then goodwill is not impaired. If the fair value of a reporting unit is less than its carrying value, then goodwill is impaired to the extent of the difference, but the impairment may not exceed the balance of goodwill assigned to that reporting unit. We utilize a discounted cash flow analysis, referred to as an income approach, and market multiples, referred to as a market approach, to determine the estimated fair value of our reporting units. For the income approach, significant judgments and assumptions including forecasted project awards, discount rate, anticipated revenue growth rate, gross margins, operating expenses, working capital needs and capital expenditures are inherent in the fair value estimates, which are based on our operating and capital budgets and on our strategic plan. As a result, actual results may differ from the estimates utilized in our income approach. For the market approach, significant judgments and assumptions include the selection of guideline companies, forecasted guideline company EBITDA (as defined in Note 4 - Goodwill) and our forecasted EBITDA (as defined in Note 4 - Goodwill). The use of alternate judgments and/or assumptions could result in a fair value that differs from our estimate and could result in the recognition of additional impairment charges in the financial statements. As a test for reasonableness, we also consider the combined fair values of our reporting units to our market capitalization. Other Intangible Assets Intangible assets that have finite useful lives are amortized by the straight-line method over their useful lives ranging from 6 years to 15 years. A finite intangible asset is considered impaired when its carrying amount is not recoverable and exceeds the asset's fair value. The carrying amount is deemed unrecoverable if it is greater than the sum of undiscounted cash flows expected to result from use and eventual disposition of the asset. An impairment loss is equal to the excess of the carrying amount over the fair value of the asset. If quoted market prices are not available, the fair values of the intangible assets are based on present values of expected future cash flows or royalties avoided using discount rates commensurate with the risks involved. Insurance Reserves We maintain insurance coverage for various aspects of our operations. However, we retain exposure to potential losses through the use of deductibles, coverage limits and self-insured retentions. We establish reserves for claims using a combination of actuarially determined estimates and case-by-case evaluations of the underlying claim data and update our evaluations as further information becomes known. Judgments and assumptions are inherent in our reserve accruals; as a result, changes in assumptions or claims experience could result in changes to these estimates in the future. If actual results of claim settlements are different than the amounts estimated, we may be exposed to future gains and losses that could be material. Stock-Based Compensation We have issued time-based and market-based restricted stock unit awards under our long-term incentive compensation plans. We have issued time-based awards that are equity-settled and time-based awards that are cash-settled. The fair value of time-based awards is based on the value of our common stock at the grant date. The fair value of market-based awards is based on several factors, including the probability that the market condition specified in the grant will be achieved, which is calculated using a Monte Carlo model. Cash-settled time-based awards must be settled in cash and are accounted for as liability-type awards and are remeasured at the end of each reporting period at fair value until settlement. For all awards, expense is recognized over the requisite service period with forfeitures recorded as they occur. 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. 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, with the help of professional tax advisors. Therefore, we estimate and provide for amounts of additional income taxes that may be assessed by the various taxing authorities. Foreign Currency The functional currencies of our operations in Canada, South Korea and Australia are the Canadian Dollar, South Korean Won and U.S. Dollar, respectively. The functional currency of our Australian operations is the U.S. Dollar since its sales are primarily denominated in that currency. For subsidiaries with operations using a foreign functional currency, assets and liabilities are translated at the year-end exchange rates and the income statement accounts are translated at average exchange rates throughout the year. Translation gains and losses are reported in Accumulated Other Comprehensive Loss, net of tax, in the Consolidated Statements of Changes in Stockholders’ Equity and in Other Comprehensive Loss in the Consolidated Statements of Comprehensive Income. Translation gains and losses are reversed from Accumulated Other Comprehensive Loss and are recognized in current period income in the event we dispose of an entity with accumulated translation gains or losses. Transaction gains and losses are reported as a component of Other income (expense) in the Consolidated Statements of Income. Accounting Standards Not Yet Adopted In November 2023, the FASB issued ASU 2023-07, Segment Reporting (Topic 280): Improvements to Reportable Segment Disclosures, which expands disclosures about a public entity's reportable segments and requires enhanced information about a reportable segment's expenses, interim segment profit or loss, and how a public entity's chief operating decision maker uses reported segment profit or loss information in assessing segment performance and allocating resources. The update will be effective for annual periods beginning after December 15, 2023 (fiscal 2025). Adoption of this ASU will result in additional disclosure, but will not impact the Company's consolidated financial position, results of operations or cash flows. In December 2023, the FASB issued ASU 2023-09, Income Taxes (Topic 740): Improvements to Income Tax Disclosures, which expands disclosures in an entity's income tax rate reconciliations table and regarding cash taxes paid both in the U.S. and foreign jurisdictions. The update will be effective for annual periods beginning after December 15, 2024 (fiscal 2026). Adoption of this ASU will result in additional disclosure, but will not impact the Company's consolidated financial position, results of operations or cash flows. Other accounting pronouncements issued but not effective until after June 30, 2024 are not expected to have a material impact on the Company's consolidated financial position, results of operations, or cash flows.

Revenue

Revenue	12 Months Ended
	Jun. 30, 2024
Revenue from Contract with Customer [Abstract]
Revenue from Contract with Customer [Text Block]	Revenue Remaining Performance Obligations We had $1.1 billion of remaining performance obligations yet to be satisfied as of June 30, 2024. We expect to recognize approximately $534.6 million of our remaining performance obligations as revenue within the next twelve months. Contract Balances Contract terms with customers include the timing of billing and payment, which usually differs from the timing of revenue recognition. As a result, we carry contract assets and liabilities in our balance sheet. These contract assets and liabilities are calculated on a contract-by-contract basis and are classified as current. We present our contract assets in the balance sheet as Costs and Estimated Earnings in Excess of Billings on Uncompleted Contracts ("CIE"). CIE consists of revenue recognized in excess of billings. We present our contract liabilities in the balance sheet as Billings on Uncompleted Contracts in Excess of Costs and Estimated Earnings ("BIE"). BIE consists of billings in excess of revenue recognized. The following table provides information about CIE and BIE: June 30, June 30, Change (In thousands) Costs and estimated earnings in excess of billings on uncompleted contracts $ 33,893 $ 44,888 $ (10,995) Billings on uncompleted contracts in excess of costs and estimated earnings (171,308) (85,436) (85,872) Net contract liabilities $ (137,415) $ (40,548) $ (96,867) The difference between the beginning and ending balances of our CIE and BIE primarily results from the timing of revenue recognized relative to its billings. The amount of revenue recognized during the fiscal year ended June 30, 2024 that was included in the prior period BIE balance was $85.3 million. Progress billings in accounts receivable at June 30, 2024 and June 30, 2023 included retentions to be collected within one year of $11.6 million and $16.3 million, respectively. Contract retentions collectable beyond one year are included in Other assets, non-current in the Consolidated Balance Sheets and totaled $28.6 million and $10.0 million as of June 30, 2024 and June 30, 2023, respectively. Unpriced Change Orders and Claims Costs and estimated earnings in excess of billings on uncompleted contracts included revenues for unpriced change orders and claims of $9.9 million and $9.7 million at June 30, 2024 and 2023, respectively. The amounts ultimately realized may be different than the recorded amounts resulting in adjustments to future earnings. Generally we expect collection of amounts related to unpriced change orders and claims within twelve months. However, customers may not pay these amounts until final resolution of related claims, which may extend beyond one year. Disaggregated Revenue Revenue disaggregated by reportable segment is presented in Note 13 - Segment Information. The following series of tables presents revenue disaggregated by geographic area where the work was performed and by contract type: Geographic Disaggregation: Fiscal Years Ended June 30, June 30, June 30, (In thousands) United States $ 662,449 $ 720,140 $ 640,512 Canada 56,420 61,691 63,045 Other international 9,344 13,189 4,223 Total Revenue $ 728,213 $ 795,020 $ 707,780 Contract Type Disaggregation: Fiscal Years Ended June 30, June 30, June 30, (In thousands) Fixed-price contracts $ 455,548 $ 419,426 $ 421,188 Time and materials and other cost reimbursable contracts 272,665 375,594 286,592 Total Revenue $ 728,213 $ 795,020 $ 707,780 Revisions in Estimates Fiscal 2023 During fiscal 2023, unfavorable changes in the estimated recovery of change orders and increased forecasted costs to complete and closeout certain midstream gas processing capital work in the Process and Industrial Facilities segment resulted in a $12.6 million reduction of gross profit during the fiscal year. These charges were primarily the result of the client not approving adequate compensation to us for the impact that excessive scope changes had on our ability to progress the work according to forecast and for the impacts of global supply chain issues and inflation. We achieved substantial completion on this work in early fiscal 2024. Fiscal 2022 Our results of operations were materially impacted by an increase in the forecasted costs to complete a midstream gas processing project in the Process and Industrial Facilities segment. The project reduced gross profit by $8.7 million during fiscal 2022. The increase in forecasted costs was primarily due to poor performance of a now terminated subcontractor, which required rework, as well as supply chain and cost escalation issues. This project has since reached mechanical completion. In fiscal 2022, our results of operations were materially impacted by an increase in the costs required to complete a thermal energy storage tank repair and maintenance project in the Storage and Terminal Solutions segment, which resulted in a decrease in gross profit of $6.3 million during the fiscal year. We achieved substantial completion on this project in fiscal 2022. During fiscal 2022, our results of operations were materially impacted by changes in the forecasted costs to complete two large construction projects in the Utility and Power Infrastructure segment and an unfavorable settlement of a claim with a customer in the same segment. Increases in the forecasted costs to complete the first project resulted in the project reducing gross profit by $3.6 million during fiscal 2022. Increased forecasted costs to complete the second capital project resulted in the project reducing gross profit by $2.2 million during the fourth quarter of fiscal 2022 and $0.1 million during fiscal 2022. We recognized $78.1 million of revenue on this project during fiscal 2022 at a near break-even margin as a result of the change in estimate. Both projects reached substantial completion in fiscal 2023. The unfavorable settlement of a claim with a customer reduced gross profit by $2.1 million.

Property, Plant, and Equipment

Property, Plant, and Equipment	12 Months Ended
	Jun. 30, 2024
Property, Plant and Equipment [Abstract]
Property, Plant and Equipment Disclosure	Property, Plant and Equipment The following table presents the components of our property, plant and equipment, net at June 30, 2024 and 2023: June 30, June 30, (In thousands) Property, plant and equipment Land and buildings $ 32,610 $ 37,263 Construction equipment 76,603 84,258 Transportation equipment 41,075 40,606 Office equipment and software 34,154 38,178 Finance Lease 33 — Construction in progress 4,948 84 Total property, plant and equipment 189,423 200,389 Accumulated depreciation (145,925) (152,844) Property, plant and equipment, net $ 43,498 $ 47,545 During fiscal 2024, we sold a previously utilized facility in Burlington, Ontario for $2.7 million in net proceeds, which resulted in a gain of $2.5 million. We closed this previously utilized facility because it was no longer strategic to the future of the business. During fiscal 2024, we also sold a facility in Catoosa, Oklahoma for $2.7 million in net proceeds, which resulted in a gain of $2.0 million. The facility was previously utilized for our industrial cleaning business, which was sold in fiscal 2023. The gains from these asset sales were included in Other income in the Consolidated Statements of Income. During fiscal 2023, we sold our industrial cleaning business for net proceeds of $6.3 million in cash and a $0.4 million receivable for amounts to be paid upon satisfactory transfer of title of certain vehicles and equipment sold. The sale resulted in a $2.9 million gain, which was included in Other income in the Consolidated Statements of Income. The industrial cleaning business was included in our Process and Industrial Facilities segment and was disposed of because its operations were no longer core to our growth strategy. In fiscal 2022, we took advantage of elevated real estate prices and sold our regional office and fabrication and warehouse facilities located in Orange, California for net proceeds of $37.4 million in cash and recorded a gain of $32.4 million on the sale. In connection with the sale, we entered into a leaseback agreement while replacement facilities were obtained. During fiscal 2024, we purchased a facility in Bakersfield, California for $4.1 million and leased new space for the regional office. The Company will move into these new facilities in early fiscal 2025. Depreciation expense totaled $9.6 million, $12.0 million, and $13.4 million in fiscal 2024, 2023, and 2022, respectively.

Goodwill and Other Intangible A

Goodwill and Other Intangible Assets	12 Months Ended
	Jun. 30, 2024
Goodwill and Intangible Assets Disclosure [Abstract]
Goodwill and Intangible Assets Disclosure [Text Block]	Goodwill and Other Intangible Assets Goodwill The changes in the carrying amount of goodwill by segment are as follows: Storage and Terminal Utility and Power Process and Industrial Facilities Total (In thousands) Net balance at June 30, 2021 $ 26,774 $ 6,984 $ 26,878 $ 60,636 Goodwill impairment (7,208) (2,659) (8,445) (18,312) Translation adjustment (1) (121) (62) (6) (189) Net balance at June 30, 2022 19,445 4,263 18,427 42,135 Goodwill impairment — — (12,316) (12,316) Disposal of business (2) — — (627) (627) Translation adjustment (1) (48) (24) — (72) Net balance at June 30, 2023 19,397 4,239 5,484 29,120 Translation adjustment (1) (64) (33) — (97) Net balance at June 30, 2024 $ 19,333 $ 4,206 $ 5,484 $ 29,023 (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. (2) We sold our industrial cleaning business during the fourth quarter of fiscal 2023, which resulted in the allocation $0.6 million of goodwill to net assets sold in the transaction. See Note 3 - Property, Plant and Equipment, Industrial Cleaning Disposal, for more information. Fiscal 2024 We performed our annual goodwill impairment test as of May 31, 2024, which resulted in no impairment. The fiscal 2024 test indicated that two reporting units with a combined total of $16.6 million of goodwill as of June 30, 2024 were at higher risk of future impairment. If our view of project opportunities or gross margins deteriorates, particularly for the higher risk reporting units, then we may be required to record an impairment of goodwill. The estimated fair value of each reporting unit was derived by utilizing a discounted cash flow analysis and market multiples of projected EBITDA. EBITDA is defined as earnings before interest expense, interest income, taxes, depreciation and amortization, The key assumptions used are described in Note 1 - Summary of Significant Accounting Policies. Fiscal 2023 In the second quarter of fiscal 2023, we concluded that a goodwill impairment indicator existed for a reporting unit in the Process and Industrial Facilities segment based on a material adverse change in gross profit on a project. Based on the indicated outcome of this project and our near-term outlook for the reporting unit, we performed an interim impairment test for the unit and concluded that its $12.3 million of goodwill was fully impaired. The impairment was recognized in operating income during the three and six months ended December 31, 2022. Fiscal 2022 In the third quarter of fiscal 2022, we concluded that goodwill impairment indicators existed based on the decline in the price of our stock and operating results that have underperformed our forecasts during the year. Accordingly, we performed an interim impairment test as of March 31, 2022 and concluded that there was $18.3 million of total impairment to goodwill, which was recognized in operating income during the three and nine months ended March 31, 2022 as follows: • $8.4 million in the Process and Industrial Facilities segment; • $7.2 million in the Storage and Terminal Solutions segment; and • $2.7 million in the Utility and Power Infrastructure segment. Other Intangible Assets Information on the carrying value of other intangible assets is as follows: At June 30, 2024 Useful Life Gross Accumulated Net Carrying (Years) (In thousands) Intellectual property 10 $ 130 $ (109) $ 21 Customer based (1) 9 to 15 11,144 (9,514) 1,630 Total other intangible assets $ 11,274 $ (9,623) $ 1,651 (1) Intangible assets have been adjusted in fiscal 2024 to remove $4.4 million of intangible assets that have been fully amortized. At June 30, 2023 Useful Life Gross Accumulated Net Carrying (Years) (In thousands) Intellectual property 10 to 15 $ 2,483 $ (2,371) $ 112 Customer based (1) 6 to 15 13,144 (10,190) 2,954 Total other intangible assets $ 15,627 $ (12,561) $ 3,066 (1) Customer-based intangible assets have been adjusted in fiscal 2023 to remove $4.2 million of intangible assets that have been fully amortized. Amortization expense totaled $1.4 million, $1.7 million, and $1.8 million in fiscal 2024, 2023, and 2022, respectively. We estimate that future amortization of other intangible assets will be as follows (in thousands): For year ending: June 30, 2025 $ 1,096 June 30, 2026 555 Total estimated amortization expense $ 1,651

Debt

Debt	12 Months Ended
	Jun. 30, 2024
Debt Disclosure [Abstract]
Debt	Debt On September 9, 2021, the Company and our primary U.S. and Canada operating subsidiaries entered into an asset-based credit agreement, which was most recently amended on May 3, 2024 (as amended, the "ABL Facility"), with Bank of Montreal, as Administrative Agent, Swing Line Lender and a Letter of Credit Issuer, and the lenders named therein. The maximum amount of loans under the ABL Facility is limited to $90.0 million. The ABL Facility is intended to be used for working capital, capital expenditures, issuances of letters of credit and other lawful purposes. Our obligations under the ABL Facility are guaranteed by substantially all of our U.S. and Canadian subsidiaries and are secured by a first lien on all our assets under the ABL Facility. The ABL Facility matures, and any outstanding amounts become due and payable, on September 9, 2026. The maximum amount that we may borrow under the ABL Facility is subject to a borrowing base, which is based on restricted cash plus a percentage of the value of certain accounts receivable, inventory and equipment, reduced for certain reserves. We are required to maintain a minimum of $25.0 million of restricted cash at all times, but such amounts are also included in the borrowing base. The borrowing base is recalculated on a monthly basis and at June 30, 2024, our borrowing base was $60.9 million. During fiscal 2024, the Company repaid all outstanding borrowings under the ABL Facility. The Company had $6.9 million in letters of credit outstanding, nearly all of which expire within the next 12 months, which resulted in availability of $54.0 million under the ABL Facility. Our borrowing base has ranged from $60.9 million to $74.6 million during fiscal 2024. Borrowings under the ABL Facility bear interest through maturity at a variable rate based upon, at our option, an annual rate of either a base rate (“Base Rate”), an Adjusted Term Secured Overnight Financing Rate ("Adjusted Term SOFR"), or at the Canadian Prime Rate, plus an applicable margin. The Adjusted Term SOFR is defined as (i) the SOFR plus (ii) 11.448 basis points for a one-month tenor and 26.161 basis points for a three-month tenor; provided that the Adjusted Term SOFR cannot be below zero. The Base Rate is defined as a fluctuating interest rate equal to the greater of: (i) rate of interest announced by Bank of Montreal from time to time as its prime rate; (ii) the U.S. federal funds rate plus 0.50%; (iii) Adjusted Term SOFR for one month period plus 1.00%; or (iv) 1.00%. Depending on the amount of average availability, the applicable margin is between 1.00% to 1.50% for Base Rate and Canadian Prime Rate borrowings, which includes either U.S. or Canadian prime rate, and between 2.00% and 2.50% for Adjusted Term SOFR borrowings. Interest is payable either (i) monthly for Base Rate or Canadian Prime Rate borrowings or (ii) the last day of the interest period for Adjusted Term SOFR borrowings, as set forth in the ABL Facility. The fee for undrawn amounts is 0.25% per annum and is due quarterly. The ABL Facility contains customary conditions to borrowings, events of default and covenants, including, but not limited to, covenants that limit our ability to sell assets, engage in mergers and acquisitions, incur, assume or permit to exist additional indebtedness and guarantees, create or permit to exist liens, pay cash dividends, issue equity instruments, make distribution or redeem or repurchase capital stock. In the event that our availability is less than the greater of (i) $15.0 million and (ii) 15.00% of the commitments under the ABL Facility then in effect, a consolidated Fixed Charge Coverage Ratio of at least 1.00 to 1.00 must be maintained. We were in compliance with all covenants of the ABL Facility as of June 30, 2024.

Income Taxes

Income Taxes	12 Months Ended
	Jun. 30, 2024
Income Tax Disclosure [Abstract]
Income Taxes	Income Taxes Sources of Pretax Income (Loss) Fiscal Years Ended June 30, June 30, June 30, (In thousands) Domestic $ (27,119) $ (52,636) $ (53,258) Foreign 2,107 (125) (5,025) Total $ (25,012) $ (52,761) $ (58,283) Components of the Provision for Income Tax Expense (Benefit) Fiscal Years Ended June 30, June 30, June 30, (In thousands) Current: Federal $ (80) $ (369) $ 230 State 44 (31) 28 Foreign — — 1 Current Total (36) (400) 259 Deferred: Federal — — 2,504 State — — 2,858 Foreign — — (4) Deferred Total — — 5,358 Total $ (36) $ (400) $ 5,617 Reconciliation Between the Expected Income Tax Provision Applying the Domestic Federal Statutory Tax Rate and the Reported Income Tax Provision Fiscal Years Ended June 30, June 30, June 30, (In thousands) Expected benefit for federal income taxes at the statutory rate $ (5,253) $ (11,080) $ (12,239) State income taxes, net of federal benefit (2,065) (2,320) (1,971) Impairment of non-deductible goodwill (1) — — 1,132 Charges without tax benefit, net of non-taxable income 384 358 265 Change in valuation allowance (2) 8,542 12,595 17,943 Excess tax expense (benefit) on stock-based compensation (61) 1,216 1,019 Research and development and other tax credits (1,299) (1,175) (613) Foreign tax differential 388 50 (232) Federal rate differential net operating loss carryback — — 141 Change in uncertain tax positions (81) (90) (120) Other (591) 46 292 Provision (benefit) for federal, state and foreign income taxes $ (36) $ (400) $ 5,617 (1) In fiscal 2022, we impaired $18.3 million of goodwill, which included $5.4 million of non-deductible goodwill. See Note 4 - Goodwill and Other Intangible Assets for more information about the impairments. (2) Due to the existence of a cumulative loss over a three-year period, we recorded a full valuation allowance against our deferred tax assets in fiscal 2022 and recorded additional valuation allowances against newly generated deferred tax assets in fiscal 2023 and 2024. These assets are primarily comprised of federal net operating losses, which have an indefinite carryforward, federal tax credits and state net operating losses. To the extent we generate taxable income in the future, or cumulative losses are no longer present and our future projections for growth or tax planning strategies are demonstrated, we will realize the benefit associated with the net operating losses for which the valuation allowance has been provided. Significant Components of our Deferred Tax Assets and Liabilities June 30, June 30, (In thousands) Deferred tax assets: Accruals and reserves $ 283 $ 504 Bad debt reserve 52 273 Insurance reserve 941 913 Net operating loss benefit and credit carryforwards 29,626 26,888 Accrued compensation and pension 1,273 964 Stock compensation expense on nonvested restricted stock units 3,438 1,794 Book over tax amortization 5,607 7,218 Research and development capitalization 12,425 6,592 Foreign currency translation and other 1,324 1,608 Valuation allowance (49,434) (41,060) Total deferred tax assets 5,535 5,694 Deferred tax liabilities: Tax over book depreciation 5,081 5,472 Other 479 248 Total deferred tax liabilities 5,560 5,720 Net deferred tax liability $ (25) $ (26) As reported in the Consolidated Balance Sheets: June 30, June 30, (In thousands) Deferred income tax assets $ — $ — Deferred income tax liabilities (25) (26) Net deferred tax liability $ (25) $ (26) Valuation Allowance We placed a valuation allowance on our deferred tax assets in the second quarter of fiscal 2022 due to the existence of a cumulative loss over a three-year period. We will continue to place valuation allowances on newly generated deferred tax assets and will realize the benefit associated with the deferred tax assets for which the valuation allowance has been provided to the extent we generate taxable income in the future. Operating Loss and Tax Credit Carryforwards We have net operating loss carryforwards and tax credit carryforwards in federal, state and foreign jurisdictions. The valuation allowance at June 30, 2024 and June 30, 2023 reduces the recognized tax benefit of these carryforwards to an amount that is more likely than not to be realized. The gross carryforwards will generally expire as shown below for each jurisdiction: Operating Loss and Tax Credit Carryforwards Expiration Period Amount (in thousands) Federal net operating loss Indefinite $ 40,554 Federal tax credits June 2041 to June 2044 $ 4,849 Federal foreign tax credits June 2025 $ 270 State net operating losses June 2025 to indefinite $ 106,191 State tax credits June 2033 to indefinite $ 984 Foreign net operating losses June 2033 to June 2044 $ 31,883 Foreign tax credits June 2035 to June 2044 $ 682 Other In general, it is our practice and intention to reinvest the earnings of our foreign subsidiaries in our foreign operations. We do not provide for outside basis differences under the indefinite reinvestment assertion of ASC 740-30. We file tax returns in multiple domestic and foreign taxing jurisdictions. With a few exceptions, we are no longer subject to examination by taxing authorities through fiscal 2019. At June 30, 2024, we updated our evaluation of our open tax years in all known jurisdictions. As of June 30, 2024, we have a $0.1 million liability for unrecognized tax positions and the payment of related interest and penalties. We treat the related interest and penalties as income tax expense. Due to the uncertainties related to these tax matters, we are unable to make a reasonably reliable estimate as to when cash settlement with a taxing authority will occur.

Commitments and Contingencies

Commitments and Contingencies	12 Months Ended
	Jun. 30, 2024
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies	Commitments and Contingencies Insurance Reserves We maintain insurance coverage for various aspects of our operations. However, we retain exposure to potential losses 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. We 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. We maintain a performance and payment bonding line sufficient to support the business. We generally require our subcontractors to indemnify us and our customer and name us 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 us, 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. Litigation In 2020, we commenced litigation in the United States District Court for the Northern District of Ohio, Western Division (Matrix North American Construction, Inc. v. Pro-Tec Coating Company, LLC, Case No. 3:20-cv-00084-JZ) in an effort to collect an account receivable from an iron and steel customer on a reimbursable contract following the deterioration of the relationship. In connection with our suit, the customer filed certain counterclaims against us. In September 2023, a jury returned a verdict in our favor and awarded us the full contract balance. We received full payment of the remaining amount owed of $16.8 million in the second quarter of fiscal 2024. In January 2021, we achieved mechanical completion on a crude oil storage project. On April 1, 2022, we filed an arbitration demand against Keyera Energy, Inc. in an effort to collect outstanding balances of $32.7 million related to the project. In response, on June 2, 2022, the customer filed counterclaims seeking $20.0 million, which included liquidated damages and damages with respect to miscellaneous warranty items. On October 31, 2022, the customer amended its counterclaim claiming damages in a range of $18.8 million to $36.0 million, which included estimated amounts for “potential future costs.” In July 2024, the customer filed a second amended counterclaim which significantly increased the amount of alleged damages to a range of $69.6 million to $97.9 million, including a new claim for unspecified “other damages” of $46.9 million. A portion of the total alleged damages, if we are held liable, may be subject to certain insurance coverages. We believe we have substantial legal and contractual defenses to the claims presented, and are vigorously contesting the claims. During fiscal 2023, we completed construction services on a time and materials basis for a customer at a mining and minerals facility. In late fiscal 2023, after numerous attempts to collect outstanding receivables, we filed a notice of default for lack of payment of outstanding balances, and in early fiscal 2024, we filed a lien on the facility. The customer, 5E Boron Americas, LLC, responded by commencing litigation against us on July 17, 2023 in the United States District Court for the Central District of California, Eastern Division (5E Boron Americas, LLC v. Matrix Service Inc., Case No. 5:23-cv-01396-AB(DTBx)), alleging breach of contract and breach of express warranty. We denied all claims and filed a countersuit against the customer for failure to pay amounts due of $5.6 million. We believe we have set appropriate reserves based on our evaluation of the possible outcomes for the matters described above. However, the results of litigation are inherently unpredictable, and the possibility exists that the ultimate resolution of one or more of these matters could result in a material effect on our financial position, results of operations or liquidity. We and our subsidiaries are participants in various other legal actions. It is the opinion of management that none of the other known legal actions will have a material impact on our financial position, results of operations or liquidity.

Leases

Leases	12 Months Ended
	Jun. 30, 2024
Leases [Abstract]
Operating Leases	Leases We enter into lease arrangements for real estate, construction equipment and information technology equipment in the normal course of business. Real estate leases accounted for most of our right-of-use assets as of June 30, 2024. Most real estate and information technology equipment leases generally have fixed payments that follow an agreed upon payment schedule and have remaining lease terms ranging from less than a year to 12 years. Construction equipment leases generally have "month-to-month" lease terms that automatically renew as long as the equipment remains in use. The components of lease expense in the Consolidated Statements of Income are as follows: Fiscal Years Ended June 30, 2024 June 30, 2023 June 30, 2022 Lease expense Location of Expense in Consolidated Statements of Income (in thousands) Operating lease expense Cost of revenue and selling, general and administrative expenses $ 5,994 $ 6,635 $ 7,511 Short-term lease expense (1) Cost of revenue 21,414 29,598 24,225 Total lease expense $ 27,408 $ 36,233 $ 31,736 (1) Primarily represents the lease expense of construction equipment that is subject to month-to-month rental agreements with expected rental durations of less than one year. The future undiscounted lease payments, as reconciled to the discounted operating lease liabilities presented in our Consolidated Balance Sheets, were as follows: June 30, 2024 Maturity Analysis: (in thousands) Fiscal 2025 $ 5,346 Fiscal 2026 5,060 Fiscal 2027 4,801 Fiscal 2028 4,417 Fiscal 2029 3,779 Thereafter 6,153 Total future operating lease payments 29,556 Imputed interest (6,661) Net present value of future lease payments 22,895 Less: current portion of operating lease liabilities 3,739 Non-current operating lease liabilities $ 19,156 The following is a summary of the weighted average remaining operating lease and term and weighted average discount rate as of June 30, 2024: Weighted-average remaining lease term (in years) 6.1 years Weighted-average discount rate 6.3 % Supplemental cash flow information related to leases is as follows: Fiscal Year Ended June 30, 2024 (in thousands) Cash paid for amounts included in the measurement of lease liabilities: Operating lease payments $ 5,761 Right-of-use assets obtained in exchange for lease liabilities: Operating leases $ 1,956

Stockholders' Equity

Stockholders' Equity	12 Months Ended
	Jun. 30, 2024
Stockholders' Equity Note [Abstract]
Stockholders' Equity	Stockholders’ Equity Preferred Stock We have 5.0 million shares of preferred stock authorized, none of which was issued or outstanding at June 30, 2024 or June 30, 2023. Stock Repurchase Program We may repurchase common stock pursuant to the Stock Buyback Program, which was approved by the board of directors in November 2018. Under the program, the aggregate number of shares repurchased may not exceed 2,707,175 shares. We may repurchase our stock from time to time in the open market at prevailing market prices or in privately negotiated transactions and are not obligated to purchase any shares. The program will continue unless and until it is modified or revoked by the Board of Directors. We made no repurchases under the program in fiscal 2024 and have no current plans to repurchase stock. The terms of our ABL Facility limit share repurchases to $2.5 million per fiscal year provided that we meet certain availability thresholds and do not violate our Fixed Charge Coverage Ratio financial covenant. There were 1,349,037 shares available for repurchase under the November 2018 Program as of June 30, 2024. Treasury Shares

Earnings per Common Share

Earnings per Common Share	12 Months Ended
	Jun. 30, 2024
Earnings Per Share [Abstract]
Earnings per Common Share	Note 11—Earnings per Common Share Basic earnings per share (“EPS”) is calculated based on the weighted average shares outstanding during the period. Diluted earnings per share includes the dilutive effect of employee and director nonvested restricted stock units. Nonvested restricted stock units are considered dilutive (antidilutive) whenever the average market value of the shares during the period exceeds (is less than) the sum of the related average unamortized compensation expense during the period plus the related hypothetical estimated excess tax benefit that will be realized when the shares vest. Nonvested restricted stock units are considered antidilutive in the event we report a net loss. The computation of basic and diluted EPS is as follows: Fiscal Years Ended June 30, June 30, June 30, (In thousands, except per share data) Basic EPS: Net loss $ (24,976) $ (52,361) $ (63,900) Weighted average shares outstanding 27,379 26,988 26,733 Basic loss per share $ (0.91) $ (1.94) $ (2.39) Diluted EPS: Weighted average shares outstanding—basic 27,379 26,988 26,733 Diluted weighted average shares 27,379 26,988 26,733 Diluted loss per share $ (0.91) $ (1.94) $ (2.39) The following securities are considered antidilutive and have been excluded from the calculation of Diluted EPS: Fiscal Years Ended June 30, June 30, June 30, (In thousands) Nonvested restricted stock units 863 97 110

Employee Benefit Plans

Employee Benefit Plans	12 Months Ended
	Jun. 30, 2024
Retirement Benefits [Abstract]
Employee Benefit Plans	Employee Benefit Plans Defined Contribution Plans We sponsor defined contribution savings plans for all eligible employees meeting length of service requirements. Under the primary plan, participants may contribute an amount up to 75% of pretax annual compensation subject to certain limitations. We match 100% of the first 3% of employee contributions and 50% of the next 2% of employee contributions. Our matching contributions vest immediately. Our matching contributions were $5.1 million in fiscal year ended June 30, 2024 and $5.3 million in each of the fiscal years ended June 30, 2023 and 2022. Multiemployer Pension Plans We contribute to a number of multiemployer defined benefit pension plans in the U.S. and Canada under the terms of collective-bargaining agreements that cover our union-represented employees, who are represented by more than 100 local unions. The related collective-bargaining agreements between those organizations and us, which specify the rate at which we must contribute to the multi-employer defined pension plan, expire at different times between 2023 and 2026. Benefits under these plans are generally based on compensation levels and years of service. For us, the financial risks of participating in multiemployer plans are different from single-employer plans in the following respects: • Assets contributed to the multiemployer plan by one employer may be used to provide benefits to employees of other participating employers. • If a participating employer discontinues contributions to a plan, the unfunded obligations of the plan may be borne by the remaining participating employers. • If a participating employer chooses to stop participating in a plan, a withdrawal liability may be created based on the unfunded vested benefits for all employees in the plan. Under federal legislation regarding multiemployer pension plans, in the event of a withdrawal from a plan or plan termination, companies are required to continue funding their proportionate share of such plan’s unfunded vested benefits. We are a participant in multiple union sponsored multiemployer plans, and, as a plan participant, our potential obligation could be significant. The amount of the potential obligation is not currently ascertainable because the information required to determine such amount is not identifiable or readily available. Our participation in significant plans for the fiscal year ended June 30, 2024 is outlined in the table below. The “EIN/Pension Plan Number” column provides the Employer Identification Number (“EIN”) and the three digit plan number. The zone status is based on the latest information that the Company received from the plan and is certified by the plan’s actuary. Plans in the red zone are generally less than 65 percent funded, plans in the yellow zone are generally less than 80 percent funded, and plans in the green zone are generally at least 80 percent funded. The “FIP/RP Status Pending/Implemented” column indicates plans for which a financial improvement plan (“FIP”) or a rehabilitation plan (“RP”) is either pending or has been implemented. The “Surcharge Imposed” column includes plans in a red zone status that require a payment of a surcharge in excess of regular contributions. Pension Fund EIN/Pension Pension FIP/RP Company Contributions Surcharge 2024 2023 2024 2023 2022 (In thousands) Boilermaker-Blacksmith National Pension Trust 48-6168020/001 Red Red Implemented $ 4,494 $ 5,284 $ 5,208 Yes National Electrical Benefit Fund, IBEW locals 71, 126, 488, and 1319 53-0181657/001 Green Green NA 2,666 3,437 2,973 No Pipefitters Local 460 Pension Plan 51-6108443/001 Green Green NA 4,217 2,479 111 No Joint Pension Fund Local Union 164 IBEW 22-6031199/001 Green Green NA 1,257 1,724 1,514 No IBEW Local 654 Pension Plan 23-6538183/001 Green Green NA 867 1,242 857 No Joint Pension Fund of Local Union No 102 IBEW 22-1615726/001 Green Green NA 403 1,143 906 No IBEW Local 456 Pension Plan 22-6238995/001 Green Green NA 801 1,180 734 No Local 351 IBEW Pension Plan 22-3417366/001 Green Green NA 841 1,033 395 No Steamfitters Local Union No 420 Pension Plan 23-2004424/001 Red Red Implemented 615 656 498 Yes Pipefitters Local 342 Pension Plan 94-3190386/001 Green Green NA 9 498 345 No IBEW Local 98 Pension Plan 23-6583334/001 Yellow Yellow Implemented 634 484 143 No Laborers Local 220 Pension Plan 43-6159056/001 Green Green NA 747 427 24 No Contributions to other multiemployer plans 3,282 3,969 3,110 Total contributions made $ 20,833 $ 23,556 $ 16,818 (1) For the National Electrical Benefit Fund for Locals 71/126/488/1319, Pipefitters Local 460 Pension Plan, Local 351 IBEW Pension Plan, and Laborers Local 220 Pension Plan, we did not receive a funding notification that covered fiscal year 2023 during the preparation of the Form 10-K filed September 12, 2023. Under Federal pension law, if a multiemployer pension plan is determined to be in critical or endangered status, the plan must provide notice of this status to participants, beneficiaries, the bargaining parties, the Pension Benefit Guaranty Corporation, and the Department of Labor. We also observed that these plans have not submitted any Critical or Endangered Status Notices to the Department of Labor for calendar years that we have not received notification. The Critical or Endangered Status Notices can be accessed at https://www.dol.gov/agencies/ebsa/about-ebsa/our-activities/public-disclosure/2024-funding-status-notices#2024-c-and-d. Employee Stock Purchase Plan

Segment Information

Segment Information	12 Months Ended
	Jun. 30, 2024
Segment Reporting [Abstract]
Segment Information	Segment Information We operated our business through three reportable segments: • Storage and Terminal Solutions : primarily consists of engineering, procurement, fabrication, and construction services related to cryogenic and other specialty tanks and terminals for LNG, NGLs, hydrogen, ammonia, propane, butane, liquid nitrogen/liquid oxygen, and liquid petroleum. We also perform work related to traditional aboveground crude oil and refined product storage tanks and terminals. This segment also includes terminal balance of plant work, truck and rail loading/offloading facilities, and marine structures as well as storage tank and terminal maintenance and repair. Finally, we manufacture and sell precision engineered specialty tank products, including geodesic domes, aluminum internal floating roofs, floating suction and skimmer systems, roof drain systems and floating roof seals. • Utility and Power Infrastructure : primarily consists of engineering, procurement, fabrication, and construction services to support growing demand for LNG utility peak shaving facilities. We also perform traditional electrical work for public and private utilities, including construction of new substations, upgrades of existing substations, transmission and distribution line installations, and upgrades and maintenance including live wire work. Work may also include emergency and storm restoration services. We also provide construction services to a variety of power generation facilities, including natural gas fired facilities in simple or combined cycle configurations. • Process and Industrial Facilities : primarily consists of plant maintenance, repair, and turnarounds in the downstream and midstream markets for energy clients including refining and processing of crude oil, fractionating, and marketing of natural gas and natural gas liquids. We also perform engineering, procurement, fabrication, and construction for refinery upgrades and retrofits for renewable fuels, including hydrogen processing, production, loading and distribution facilities. We also construct thermal vacuum test chambers for aerospace and defense industries and other infrastructure for industries including petrochemical, sulfur, mining and minerals primarily in the extraction of non-ferrous metals, cement, agriculture, wastewater treatment facilities and other industrial customers. We evaluate performance and allocate resources based on operating income. We eliminate intersegment sales; therefore, no intercompany profit or loss is recognized. Corporate selling, general and administrative expenses, including corporate salaries and facilities costs, are excluded from our three reportable segments in order to align controllable costs with the responsibility of segment management, and to be consistent with how our chief operating decision-maker assesses segment performance and allocates resources. Segment assets consist primarily of accounts receivable, costs and estimated earnings in excess of billings on uncompleted contracts, property, plant and equipment, right-of-use lease assets, goodwill and other intangible assets. Operating Segment Information - The following tables set forth certain selected financial information for our operating segments for the periods indicated: (In thousands) Storage and Terminal Solutions Utility and Power Infrastructure Process and Industrial Facilities Corporate Total Fiscal Year Ended June 30, 2024 Total revenue (1) $ 276,800 $ 183,920 $ 266,260 $ 1,233 $ 728,213 Cost of revenue (265,503) (174,688) (244,408) (3,141) (687,740) Gross profit (loss) 11,297 9,232 21,852 (1,908) 40,473 Selling, general and administrative expenses 19,823 8,844 10,354 31,064 70,085 Restructuring costs — 52 215 234 501 Operating income (loss) $ (8,526) $ 336 $ 11,283 $ (33,206) $ (30,113) (1) Total revenues are net of inter-segment revenues which are primarily Storage and Terminal Solutions and were $2.4 million for the year ended June 30, 2024. Storage and Terminal Solutions Utility and Power Infrastructure Process and Industrial Facilities Corporate Total Fiscal Year Ended June 30, 2023 Total revenue (1) $ 255,693 $ 169,504 $ 369,823 $ — $ 795,020 Cost of revenue (245,223) (158,805) (359,067) (1,105) (764,200) Gross profit (loss) 10,470 10,699 10,756 (1,105) 30,820 Selling, general and administrative expenses 20,054 7,045 14,909 26,241 68,249 Goodwill impairment — — 12,316 — 12,316 Restructuring costs 969 37 972 1,164 3,142 Operating income (loss) $ (10,553) $ 3,617 $ (17,441) $ (28,510) $ (52,887) (1) Total revenues are net of inter-segment revenues which are primarily Storage and Terminal Solutions and were $5.6 million for the year ended June 30, 2023. Storage and Terminal Solutions Utility and Power Infrastructure Process and Industrial Facilities Corporate Total Fiscal Year Ended June 30, 2022 Total revenue (1) $ 232,839 $ 220,093 $ 254,848 $ — $ 707,780 Cost of revenue (232,577) (228,679) (245,578) (2,152) (708,986) Gross profit (loss) 262 (8,586) 9,270 (2,152) (1,206) Selling, general and administrative expenses 17,284 11,771 12,506 26,129 67,690 Goodwill impairment 7,208 2,659 8,445 — 18,312 Restructuring costs 122 87 (1,578) 2,015 646 Operating loss $ (24,352) $ (23,103) $ (10,103) $ (30,296) $ (87,854) (1) Total revenues are net of inter-segment revenues which are primarily Storage and Terminal Solutions, $3.4 million, and Process and Industrial Solutions, $3.6 million, for the year ended June 30, 2022. Total Assets by Segment June 30, 2024 June 30, 2023 June 30, 2022 (In thousands) Storage and Terminal Solutions $ 138,529 $ 139,333 $ 141,084 Utility and Power Infrastructure 84,108 67,630 94,059 Process and Industrial Facilities 81,524 90,514 104,078 Corporate 147,190 103,027 101,572 Total Segment Assets $ 451,351 $ 400,504 $ 440,793 Geographical Disaggregation of Long-Lived Assets The following table presents our long-lived tangible assets including property, plant and equipment, net, and operating right-of-use lease assets at June 30, 2024, 2023 and 2022: June 30, 2024 June 30, 2023 June 30, 2022 (In thousands) United States $ 57,520 $ 63,174 $ 69,932 Canada 1,368 1,957 1,397 Other international 3,760 4,213 4,607 Total Long-Lived Assets $ 62,648 $ 69,344 $ 75,936 Information about Significant Customers: Significant Customers as a Percentage of Segment Revenue Consolidated Storage and Terminal Utility and Power Process and Industrial Facilities Fiscal Year ended June 30, 2024 Customer one 10.5 % 27.7 % — % — % Customer two 10.3 % — % — % 28.2 % Fiscal Year ended June 30, 2023 Customer one 10.7 % — % — % 22.9 % Fiscal Year ended June 30, 2022 Customer one 12.3 % 0.8 % — % 33.5 % Customer two 11.0 % — % 35.5 % — %

Restructuring Costs

Restructuring Costs	12 Months Ended
	Jun. 30, 2024
Restructuring and Related Activities [Abstract]
Restructuring and Related Activities Disclosure [Text Block]	Restructuring Costs In fiscal 2020, we initiated a business improvement plan to increase profitability and reduce our cost structure in order to help us become more competitive and deliver higher quality service. As a result of specific events, including the effects of the COVID-19 pandemic and related market disruptions, the Company expanded its business improvement plan. The business improvement plan consists of an initial phase of discretionary cost reductions, workforce reductions, reduction of capital expenditures and the reduction in size or closure of certain offices in order to increase the utilization of our staff and bring the cost structure of the business in line with revenue volumes. In fiscal 2022, we commenced a second phase of our plan to focus on centralization of support functions, including business development, accounting, human resources, procurement and project services into shared service centers. The restructuring costs consist primarily of severance costs, facility closure costs, consulting fees and other liabilities. Our restructuring efforts were substantially complete as of June 30, 2023. Restructuring costs incurred are classified as follows: Fiscal Year Ended Since Inception of Business Improvement Plan June 30, 2024 June 30, 2023 June 30, 2022 (in thousands) Restructuring Costs by Type: Severance and other personnel-related costs $ 501 $ 2,787 $ 596 $ 18,202 Total facility costs — 216 33 4,746 Total other intangible asset impairments — — — 1,525 Other costs — 139 17 582 Total restructuring costs $ 501 $ 3,142 $ 646 $ 25,055

Valuation and Qualifying Accoun

Valuation and Qualifying Accounts	12 Months Ended
	Jun. 30, 2024
SEC Schedule, 12-09, Valuation and Qualifying Accounts [Abstract]
Valuation and Qualifying Accounts	Matrix Service Company Schedule II—Valuation and Qualifying Accounts June 30, 2024, June 30, 2023, and June 30, 2022 (In thousands) COL. A COL. B COL. C COL. D COL. E Balance at Charged to Charged to Other Accounts—Describe Deductions—Describe Balance at Fiscal Year 2024 Deducted from asset accounts: Allowance for credit losses $ 1,061 $ 3 $ — $ (863) (A) $ 201 Valuation allowance for deferred tax assets 41,060 8,542 — (168) (B) 49,434 Total $ 42,121 $ 8,545 $ — $ (1,031) $ 49,635 Fiscal Year 2023 Deducted from asset accounts: Allowance for credit losses $ 1,320 $ (88) $ — $ (171) (A) $ 1,061 Valuation allowance for deferred tax assets 28,615 12,595 — (150) (B) 41,060 Total $ 29,935 $ 12,507 $ — $ (321) $ 42,121 Fiscal Year 2022 Deducted from asset accounts: Allowance for credit losses $ 898 $ 738 $ — $ (316) (A) $ 1,320 Valuation allowance for deferred tax assets 11,104 17,943 — (432) (B) 28,615 Total $ 12,002 $ 18,681 $ — $ (748) $ 29,935 (A) Relates to various write-offs and cash receipts of previously reserved accounts from prior periods. (B) Relates to foreign currency translation for the portion of the valuation allowance on net operating loss and tax credit carryforwards in foreign jurisdictions.

Summary of Significant Accoun_2

Summary of Significant Accounting Policies (Policies) $ in Millions	12 Months Ended
	Jun. 30, 2024 USD ($)
Accounting Policies [Abstract]
Organization and Basis of Presentation	Organization and Basis of Presentation The consolidated financial statements have been prepared in accordance with accounting principles generally accepted in the United States and include the accounts of Matrix Service Company and its subsidiaries (“Matrix”, the “Company” or “we”, “our”, and “us” are to Matrix Service Company and its subsidiaries), all of which are wholly owned. Intercompany transactions and balances have been eliminated in consolidation. We operate in the United States, Canada, South Korea and Australia. Our reportable segments are Storage and Terminal Solutions, Utility and Power Infrastructure, and Process and Industrial Facilities.
Use of Estimates	Use of Estimates The preparation of financial statements requires management to make estimates and assumptions that affect the amounts reported in the financial statements and accompanying notes. We believe the most significant estimates and judgments are associated with revenue recognition, the recoverability tests that must be periodically performed with respect to our goodwill and other intangible assets, deferred tax assets, and the estimation of loss contingencies, including liabilities associated with litigation and with the self-insured retentions on our insurance programs. Actual results could materially differ from those estimates.
Accounting Standards Not Yet Adopted	on the Company's consolidated financial position, results of operations, or cash flows.
Revenue Recognition	Revenue Recognition General Information about our Contracts with Customers Our revenue comes from contracts to provide engineering, procurement, fabrication and construction, repair and maintenance and other services. Our engineering, procurement and fabrication and construction services are usually provided in association with construction projects, which are commonly fixed-price contracts that are billed based on project milestones. Our repair and maintenance services typically are cost reimbursable or time and material based contracts and are billed monthly or, for projects of short duration, at the conclusion of the project. The elapsed time from award to completion of performance may exceed one year for construction projects. Step 1: Contract Identification We do not recognize revenue unless we have identified a contract with a customer. A contract with a customer exists when it has approval and commitment from both parties, the rights and obligations of the parties are identified, payment terms are identified, the contract has commercial substance, and collectability is probable. We also evaluate whether a contract should be combined with other contracts and accounted for as a single contract. This evaluation requires judgment and could change the timing of the amount of revenue and profit recorded for a given period. Step 2: Identify Performance Obligations Next, we identify each performance obligation in the contract. A performance obligation is a promise to provide a distinct good or service or a series of distinct goods or services to the customer. Revenue is recognized separately for each performance obligation in the contract. Many of our contracts have one clearly identifiable performance obligation. However, many of our contracts provide the customer an integrated service that includes two or more of the following services: engineering, procurement, fabrication, construction, repair and maintenance services. For these contracts, we do not consider the integrated services to be distinct within the context of the contract when the separate scopes of work combine into a single commercial objective or capability for the customer. Accordingly, we generally identify one performance obligation in our contracts. The determination of the number of performance obligations in a contract requires significant judgment and could change the timing of the amount of revenue recorded for a given period. Step 3: Determine Contract Price After determining the performance obligations in the contract, we determine the contract price. The contract price is the amount of consideration we expect to receive from the customer for completing the performance obligation(s). In a fixed-price contract, the contract price is a single lump-sum amount. In reimbursable and time and materials based contracts, the contract price is determined by the agreed upon rates or reimbursements for time and materials expended in completing the performance obligation(s) in the contract. A number of our contracts contain various cost and performance incentives and penalties that can either increase or decrease the contract price. These variable consideration amounts are generally earned or incurred based on certain performance metrics, most commonly related to project schedule or cost targets. We estimate variable consideration at the most likely amount of additional consideration to be received (or paid in the case of penalties), provided that meeting the variable condition is probable. We include estimated amounts of variable consideration in the contract price to the extent it is probable that a significant reversal of cumulative revenue recognized will not occur when the uncertainty associated with the variable consideration is resolved. Our estimates of variable consideration and determination of whether to include estimated amounts in the contract price are based largely on an assessment of our anticipated performance and all information (historical, current and forecasted) that is reasonably available to us. We reassess the amount of variable consideration each accounting period until the uncertainty associated with the variable consideration is resolved. Changes in the assessed amount of variable consideration are accounted for prospectively as a cumulative adjustment to revenue recognized in the current period. Step 4: Assign Contract Price to Performance Obligations After determining the contract price, we assign such price to the performance obligation(s) in the contract. If a contract has multiple performance obligations, we assign the contract price to each performance obligation based on the stand-alone selling prices of the distinct services that comprise each performance obligation. Step 5: Recognize Revenue as Performance Obligations are Satisfied We record revenue for contracts with our customers as we satisfy the contracts' performance obligations. We recognize revenue on performance obligations associated with fixed-price contracts for engineering, procurement, fabrication and construction services over time since these services create or enhance assets the customer controls as they are being created or enhanced. We measure progress of satisfying these performance obligations by using the percentage-of-completion method, which is based on costs incurred to date compared to the total estimated costs at completion, since it best depicts the transfer of control of assets being created or enhanced to the customer. We recognize revenue over time for reimbursable and time and material based repair and maintenance contracts since the customer simultaneously receives and consumes the benefit of those services as we perform work under the contract. As a practical expedient allowed under the revenue accounting standards, we record revenue for these contracts in the amount to which we have a right to invoice for the services performed provided that we have a right to consideration from the customer in an amount that corresponds directly with the value of the performance completed to date. Costs incurred may include direct labor, direct materials, subcontractor costs and indirect costs, such as salaries and benefits, supplies and tools, equipment costs and insurance costs. Indirect costs are charged to projects based upon direct costs and overhead allocation rates per dollar of direct costs incurred or direct labor hours worked. Typically, customer contracts will include standard warranties that provide assurance that products and services will function as expected. We do not sell separate warranties. We have numerous contracts that are in various stages of completion which require estimates to determine the forecasted costs at completion. Due to the nature of the work left to be performed on many of our contracts, the estimation of total cost at completion for fixed-price contracts is complex, subject to many variables and requires significant judgment. Estimates of total cost at completion are made each period and changes in these estimates are accounted for prospectively as cumulative adjustments to revenue recognized in the current period. If estimates of costs to complete fixed-price contracts indicate a loss, a provision is made through a contract write-down for the total loss anticipated. Change Orders Contracts are often modified through change orders, which are changes to the agreed upon scope of work. Most of our change orders, which may be priced or unpriced, are for goods or services that are not distinct from the existing contract due to the significant integration of services provided in the context of the contract and are accounted for as if they were part of that existing contract. The effect of a change order on the contract price and our measure of progress for the performance obligation to which it relates is recognized as an adjustment to revenue on a cumulative catch-up basis. For unpriced change orders, we estimate the increase or decrease to the contract price using the variable consideration method described in the Step 3: Determine Contract Price paragraph above. Unpriced change orders are more fully discussed in Note 2 - Revenue. Claims Sometimes we seek claims for amounts in excess of the contract price for delays, errors in specifications and designs, contract terminations, change orders in dispute or other causes of additional costs incurred by us. Recognition of amounts as additional contract price related to claims is appropriate only if there is a legal basis for the claim. The determination of our legal basis for a claim requires significant judgment. We estimate the change to the contract price using the variable consideration method described in the Step 3: Determine Contract Price paragraph above. Claims are more fully discussed in Note 2 - Revenue.
Cash, Cash Equivalents and Restricted Cash	Cash, Cash Equivalents and Restricted Cash We include as cash equivalents all investments with original maturities of three months or less which are readily convertible into cash. We have cash on deposit at June 30, 2024 with banks in the United States, Canada, South Korea and Australia in excess of Federal Deposit Insurance Corporation ("FDIC"), Canada Deposit Insurance Corporation ("CDIC"), Korea Deposit Insurance Corporation ("KDIC") and Financial Claims Scheme ("FCS") protection limits, respectively. The United States Dollar equivalent of Canadian, South Korean and Australian deposits totaled $11.8 million as of June 30, 2024. The ABL Facility requires us to maintain a minimum of $25.0 million of restricted cash at all times. Since this cash must be restricted through the maturity date of the ABL Facility, which is beyond one year, we have classified this restricted cash as non-current in our Consolidated Balance Sheets. The following table provides a reconciliation of cash, cash equivalents and restricted cash in the Consolidated Balance Sheets to the total cash, cash equivalents and restricted cash shown in the Consolidated Statements of Cash Flows (in thousands): June 30, 2024 June 30, 2023 Cash and cash equivalents $ 115,615 $ 54,812 Restricted cash 25,000 25,000 Total cash, cash equivalents and restricted cash shown in the Consolidated Statements of Cash Flows $ 140,615 $ 79,812
Accounts Receivable	Accounts Receivable Accounts receivable are carried on a gross basis, less the allowance for credit losses. We estimate the allowance for credit losses based on relevant information about past events, including historical experience, current conditions, and reasonable and supportable forecasts that affect the collectability of the reported amount. Our customers consist primarily of major integrated oil companies, independent refiners and marketers, power companies, petrochemical companies, pipeline companies, mining companies, contractors and engineering firms. We are exposed to the risk of individual customer defaults or depressed cycles in our customers’ industries. To mitigate this risk, many of our contracts require payment as projects progress or advance payment in some circumstances. In addition, in most cases we can place liens against the property, plant or equipment constructed or terminate the contract if a material contract default occurs. Accounts are written off against the allowance for credit losses only after all reasonable collection attempts have been exhausted.
Retentions	Retentions Contract retentions collectable beyond one year are included in Other assets, non-current in the Consolidated Balance Sheets.
Loss Contingencies	Loss Contingencies
Inventories	Inventories Inventories consist primarily of steel plate and pipe and aluminum coil and extrusions. Cost is determined primarily using the average cost method and inventories are stated at the lower of cost or net realizable value.
Depreciation	Depreciation
Leases	Leases We enter into lease arrangements for real estate, construction equipment and information technology equipment in the normal course of business. We determine if an arrangement is or contains a lease at inception of the arrangement. An arrangement is determined to be a lease if it conveys the right to control the use of identified property and equipment for a period of time in exchange for consideration. Operating lease right-of-use assets are recognized as the present value of future lease payments over the lease term as of the commencement date, plus any lease payments made prior to commencement, and less any lease incentives received. Operating lease liabilities are recognized as the present value of the future lease payments over the lease term as of the commencement date. Operating lease expense is recognized based on the undiscounted future lease payments over the remaining lease term on a straight-line basis. Lease expense related to short-term leases is recognized on a straight-line basis over the lease term. Determinations with respect to lease term (including any renewals and terminations), incremental borrowing rate used to discount lease payments, variable lease expense and future lease payments require the use of judgment based on the facts and circumstances related to each lease. We consider various factors, including economic incentives, intent, past history and business need, to determine the likelihood that a renewal option will be exercised. Right-of-use assets are evaluated for impairment in accordance with our policy for impairment of long-lived assets.
Impairment of Long-Lived Assets	Impairment of Long-Lived Assets We evaluate long-lived assets for impairment when events or changes in circumstances indicate, in management’s judgment, that the carrying value of such assets used in operations may not be recoverable. The determination of whether an impairment has occurred is based on management’s estimate of undiscounted future cash flows attributable to the assets as compared to the carrying value of the assets. If an impairment has occurred, the amount of the impairment recognized is determined by estimating the fair value of the assets and, to the extent the carrying value exceeds the fair value of the assets, recording a loss provision.
Goodwill	Goodwill Goodwill represents the excess of the purchase price of acquisitions over the acquisition date fair value of the net identifiable tangible and intangible assets acquired. In accordance with current accounting guidance, goodwill is not amortized and is tested at least annually for impairment at the reporting unit level, which is a level below our reportable segments. We perform our annual impairment test in the fourth quarter of each fiscal year, or in between annual tests whenever events or changes in circumstances indicate the carrying value of goodwill may not be recoverable, to determine whether an impairment exists and to determine the amount of headroom. We define "headroom" as the percentage difference between the fair value of a reporting unit and its carrying value. The goodwill impairment test involves comparing management’s estimate of the fair value of a reporting unit with its carrying value, including goodwill. If the fair value of a reporting unit exceeds its carrying value, then goodwill is not impaired. If the fair value of a reporting unit is less than its carrying value, then goodwill is impaired to the extent of the difference, but the impairment may not exceed the balance of goodwill assigned to that reporting unit. We utilize a discounted cash flow analysis, referred to as an income approach, and market multiples, referred to as a market approach, to determine the estimated fair value of our reporting units. For the income approach, significant judgments and assumptions including forecasted project awards, discount rate, anticipated revenue growth rate, gross margins, operating expenses, working capital needs and capital expenditures are inherent in the fair value estimates, which are based on our operating and capital budgets and on our strategic plan. As a result, actual results may differ from the estimates utilized in our income approach. For the market approach, significant judgments and assumptions include the selection of guideline companies, forecasted guideline company EBITDA (as defined in Note 4 - Goodwill) and our forecasted EBITDA (as defined in Note 4 - Goodwill). The use of alternate judgments and/or assumptions could result in a fair value that differs from our estimate and could result in the recognition of additional impairment charges in the financial statements. As a test for reasonableness, we also consider the combined fair values of our reporting units to our market capitalization.
Other Intangible Assets	Other Intangible Assets Intangible assets that have finite useful lives are amortized by the straight-line method over their useful lives ranging from 6 years to 15 years. A finite intangible asset is considered impaired when its carrying amount is not recoverable and exceeds the asset's fair value. The carrying amount is deemed unrecoverable if it is greater than the sum of undiscounted cash flows expected to result from use and eventual disposition of the asset. An impairment loss is equal to the excess of the carrying amount over the fair value of the asset. If quoted market prices are not available, the fair values of the intangible assets are based on present values of expected future cash flows or royalties avoided using discount rates commensurate with the risks involved.
Insurance Reserves	Insurance Reserves We maintain insurance coverage for various aspects of our operations. However, we retain exposure to potential losses through the use of deductibles, coverage limits and self-insured retentions. We establish reserves for claims using a combination of actuarially determined estimates and case-by-case evaluations of the underlying claim data and update our evaluations as further information becomes known. Judgments and assumptions are inherent in our reserve accruals; as a result, changes in assumptions or claims experience could result in changes to these estimates in the future. If actual results of claim settlements are different than the amounts estimated, we may be exposed to future gains and losses that could be material.
Stock-Based Compensation	Stock-Based Compensation We have issued time-based and market-based restricted stock unit awards under our long-term incentive compensation plans. We have issued time-based awards that are equity-settled and time-based awards that are cash-settled. The fair value of time-based awards is based on the value of our common stock at the grant date. The fair value of market-based awards is based on several factors, including the probability that the market condition specified in the grant will be achieved, which is calculated using a Monte Carlo model. Cash-settled time-based awards must be settled in cash and are accounted for as liability-type awards and are remeasured at the end of each reporting period at fair value until settlement. For all awards, expense is recognized over the requisite service period with forfeitures recorded as they occur.
Income Taxes	Income Taxes
Foreign Currency	Foreign Currency The functional currencies of our operations in Canada, South Korea and Australia are the Canadian Dollar, South Korean Won and U.S. Dollar, respectively. The functional currency of our Australian operations is the U.S. Dollar since its sales are primarily denominated in that currency. For subsidiaries with operations using a foreign functional currency, assets and liabilities are translated at the year-end exchange rates and the income statement accounts are translated at average exchange rates throughout the year. Translation gains and losses are reported in Accumulated Other Comprehensive Loss, net of tax, in the Consolidated Statements of Changes in Stockholders’ Equity and in Other Comprehensive Loss in the Consolidated Statements of Comprehensive Income. Translation gains and losses are reversed from Accumulated Other Comprehensive Loss and are recognized in current period income in the event we dispose of an entity with accumulated translation gains or losses. Transaction gains and losses are reported as a component of Other income (expense) in the Consolidated Statements of Income.
Compensating Balance, Amount	$ 25

Summary of Significant Accoun_3

Summary of Significant Accounting Policies (Tables)	12 Months Ended
	Jun. 30, 2024
Accounting Policies [Abstract]
Restrictions on Cash and Cash Equivalents	June 30, 2024 June 30, 2023 Cash and cash equivalents $ 115,615 $ 54,812 Restricted cash 25,000 25,000 Total cash, cash equivalents and restricted cash shown in the Consolidated Statements of Cash Flows $ 140,615 $ 79,812

Revenue (Tables)

Revenue (Tables)	12 Months Ended
	Jun. 30, 2024
Revenue from Contract with Customer [Abstract]
Contract with Customer, Asset and Liability [Table Text Block]	June 30, June 30, Change (In thousands) Costs and estimated earnings in excess of billings on uncompleted contracts $ 33,893 $ 44,888 $ (10,995) Billings on uncompleted contracts in excess of costs and estimated earnings (171,308) (85,436) (85,872) Net contract liabilities $ (137,415) $ (40,548) $ (96,867)
Disaggregation of Revenue [Table Text Block]	Geographic Disaggregation: Fiscal Years Ended June 30, June 30, June 30, (In thousands) United States $ 662,449 $ 720,140 $ 640,512 Canada 56,420 61,691 63,045 Other international 9,344 13,189 4,223 Total Revenue $ 728,213 $ 795,020 $ 707,780 Contract Type Disaggregation: Fiscal Years Ended June 30, June 30, June 30, (In thousands) Fixed-price contracts $ 455,548 $ 419,426 $ 421,188 Time and materials and other cost reimbursable contracts 272,665 375,594 286,592 Total Revenue $ 728,213 $ 795,020 $ 707,780

Property, Plant, and Equipment

Property, Plant, and Equipment (Tables)	12 Months Ended
	Jun. 30, 2024
Property, Plant and Equipment [Abstract]
Property, Plant and Equipment	June 30, June 30, (In thousands) Property, plant and equipment Land and buildings $ 32,610 $ 37,263 Construction equipment 76,603 84,258 Transportation equipment 41,075 40,606 Office equipment and software 34,154 38,178 Finance Lease 33 — Construction in progress 4,948 84 Total property, plant and equipment 189,423 200,389 Accumulated depreciation (145,925) (152,844) Property, plant and equipment, net $ 43,498 $ 47,545

Goodwill and Other Intangible_2

Goodwill and Other Intangible Assets (Tables)	12 Months Ended
	Jun. 30, 2024
Goodwill and Intangible Assets Disclosure [Abstract]
Carrying value of goodwill by segment	The changes in the carrying amount of goodwill by segment are as follows: Storage and Terminal Utility and Power Process and Industrial Facilities Total (In thousands) Net balance at June 30, 2021 $ 26,774 $ 6,984 $ 26,878 $ 60,636 Goodwill impairment (7,208) (2,659) (8,445) (18,312) Translation adjustment (1) (121) (62) (6) (189) Net balance at June 30, 2022 19,445 4,263 18,427 42,135 Goodwill impairment — — (12,316) (12,316) Disposal of business (2) — — (627) (627) Translation adjustment (1) (48) (24) — (72) Net balance at June 30, 2023 19,397 4,239 5,484 29,120 Translation adjustment (1) (64) (33) — (97) Net balance at June 30, 2024 $ 19,333 $ 4,206 $ 5,484 $ 29,023 (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. (2) We sold our industrial cleaning business during the fourth quarter of fiscal 2023, which resulted in the allocation $0.6 million of goodwill to net assets sold in the transaction. See Note 3 - Property, Plant and Equipment, Industrial Cleaning Disposal, for more information.
Carrying value of other intangible assets	Information on the carrying value of other intangible assets is as follows: At June 30, 2024 Useful Life Gross Accumulated Net Carrying (Years) (In thousands) Intellectual property 10 $ 130 $ (109) $ 21 Customer based (1) 9 to 15 11,144 (9,514) 1,630 Total other intangible assets $ 11,274 $ (9,623) $ 1,651 (1) Intangible assets have been adjusted in fiscal 2024 to remove $4.4 million of intangible assets that have been fully amortized. At June 30, 2023 Useful Life Gross Accumulated Net Carrying (Years) (In thousands) Intellectual property 10 to 15 $ 2,483 $ (2,371) $ 112 Customer based (1) 6 to 15 13,144 (10,190) 2,954 Total other intangible assets $ 15,627 $ (12,561) $ 3,066 (1) Customer-based intangible assets have been adjusted in fiscal 2023 to remove $4.2 million of intangible assets that have been fully amortized.
Schedule of Finite-Lived Intangible Assets, Future Amortization Expense	We estimate that future amortization of other intangible assets will be as follows (in thousands): For year ending: June 30, 2025 $ 1,096 June 30, 2026 555 Total estimated amortization expense $ 1,651

Income Taxes (Tables)

Income Taxes (Tables)	12 Months Ended
	Jun. 30, 2024
Income Tax Disclosure [Abstract]
Schedule of sources of pretax income (loss)	Sources of Pretax Income (Loss) Fiscal Years Ended June 30, June 30, June 30, (In thousands) Domestic $ (27,119) $ (52,636) $ (53,258) Foreign 2,107 (125) (5,025) Total $ (25,012) $ (52,761) $ (58,283)
Components of the provision for income tax expense (benefit)	Components of the Provision for Income Tax Expense (Benefit) Fiscal Years Ended June 30, June 30, June 30, (In thousands) Current: Federal $ (80) $ (369) $ 230 State 44 (31) 28 Foreign — — 1 Current Total (36) (400) 259 Deferred: Federal — — 2,504 State — — 2,858 Foreign — — (4) Deferred Total — — 5,358 Total $ (36) $ (400) $ 5,617
Reconciliation between the expected income tax provision applying the domestic federal statutory tax rate and the reported income tax provision	Reconciliation Between the Expected Income Tax Provision Applying the Domestic Federal Statutory Tax Rate and the Reported Income Tax Provision Fiscal Years Ended June 30, June 30, June 30, (In thousands) Expected benefit for federal income taxes at the statutory rate $ (5,253) $ (11,080) $ (12,239) State income taxes, net of federal benefit (2,065) (2,320) (1,971) Impairment of non-deductible goodwill (1) — — 1,132 Charges without tax benefit, net of non-taxable income 384 358 265 Change in valuation allowance (2) 8,542 12,595 17,943 Excess tax expense (benefit) on stock-based compensation (61) 1,216 1,019 Research and development and other tax credits (1,299) (1,175) (613) Foreign tax differential 388 50 (232) Federal rate differential net operating loss carryback — — 141 Change in uncertain tax positions (81) (90) (120) Other (591) 46 292 Provision (benefit) for federal, state and foreign income taxes $ (36) $ (400) $ 5,617 (1) In fiscal 2022, we impaired $18.3 million of goodwill, which included $5.4 million of non-deductible goodwill. See Note 4 - Goodwill and Other Intangible Assets for more information about the impairments. (2)
Significant components of the Company's deferred tax assets and liabilities	Significant Components of our Deferred Tax Assets and Liabilities June 30, June 30, (In thousands) Deferred tax assets: Accruals and reserves $ 283 $ 504 Bad debt reserve 52 273 Insurance reserve 941 913 Net operating loss benefit and credit carryforwards 29,626 26,888 Accrued compensation and pension 1,273 964 Stock compensation expense on nonvested restricted stock units 3,438 1,794 Book over tax amortization 5,607 7,218 Research and development capitalization 12,425 6,592 Foreign currency translation and other 1,324 1,608 Valuation allowance (49,434) (41,060) Total deferred tax assets 5,535 5,694 Deferred tax liabilities: Tax over book depreciation 5,081 5,472 Other 479 248 Total deferred tax liabilities 5,560 5,720 Net deferred tax liability $ (25) $ (26)
Significant components of the Company's deferred tax assets and liabilities as reported in the Consolidated Balance Sheets	As reported in the Consolidated Balance Sheets: June 30, June 30, (In thousands) Deferred income tax assets $ — $ — Deferred income tax liabilities (25) (26) Net deferred tax liability $ (25) $ (26)
Summary of Operating Loss Carryforwards	Operating Loss and Tax Credit Carryforwards Expiration Period Amount (in thousands) Federal net operating loss Indefinite $ 40,554 Federal tax credits June 2041 to June 2044 $ 4,849 Federal foreign tax credits June 2025 $ 270 State net operating losses June 2025 to indefinite $ 106,191 State tax credits June 2033 to indefinite $ 984 Foreign net operating losses June 2033 to June 2044 $ 31,883 Foreign tax credits June 2035 to June 2044 $ 682

Leases (Tables)

Leases (Tables)	12 Months Ended
	Jun. 30, 2024
Leases [Abstract]
Lease, Cost [Table Text Block]	Fiscal Years Ended June 30, 2024 June 30, 2023 June 30, 2022 Lease expense Location of Expense in Consolidated Statements of Income (in thousands) Operating lease expense Cost of revenue and selling, general and administrative expenses $ 5,994 $ 6,635 $ 7,511 Short-term lease expense (1) Cost of revenue 21,414 29,598 24,225 Total lease expense $ 27,408 $ 36,233 $ 31,736
Lessee, Operating Lease, Liability, Maturity [Table Text Block]	June 30, 2024 Maturity Analysis: (in thousands) Fiscal 2025 $ 5,346 Fiscal 2026 5,060 Fiscal 2027 4,801 Fiscal 2028 4,417 Fiscal 2029 3,779 Thereafter 6,153 Total future operating lease payments 29,556 Imputed interest (6,661) Net present value of future lease payments 22,895 Less: current portion of operating lease liabilities 3,739 Non-current operating lease liabilities $ 19,156
Other Information Related to Leases [Table Text Block]	The following is a summary of the weighted average remaining operating lease and term and weighted average discount rate as of June 30, 2024: Weighted-average remaining lease term (in years) 6.1 years Weighted-average discount rate 6.3 % Supplemental cash flow information related to leases is as follows: Fiscal Year Ended June 30, 2024 (in thousands) Cash paid for amounts included in the measurement of lease liabilities: Operating lease payments $ 5,761 Right-of-use assets obtained in exchange for lease liabilities: Operating leases $ 1,956

Stock-Based Compensation (Table

Stock-Based Compensation (Tables)	12 Months Ended
	Jun. 30, 2024
Share-Based Payment Arrangement [Abstract]
Nonvested deferred share activity	Equity-settled restricted stock unit activity for the fiscal year ended June 30, 2024 is as follows: Shares Weighted Average Grant Nonvested shares at June 30, 2023 1,774,949 $ 10.66 Shares granted 1,039,126 $ 11.11 Shares vested and released (297,026) $ 9.40 Shares canceled (329,489) $ 11.61 Nonvested shares at June 30, 2024 2,187,560 $ 10.90

Earnings per Common Share (Tabl

Earnings per Common Share (Tables)	12 Months Ended
	Jun. 30, 2024
Earnings Per Share [Abstract]
Computation of basic and diluted earnings per share	The computation of basic and diluted EPS is as follows: Fiscal Years Ended June 30, June 30, June 30, (In thousands, except per share data) Basic EPS: Net loss $ (24,976) $ (52,361) $ (63,900) Weighted average shares outstanding 27,379 26,988 26,733 Basic loss per share $ (0.91) $ (1.94) $ (2.39) Diluted EPS: Weighted average shares outstanding—basic 27,379 26,988 26,733 Diluted weighted average shares 27,379 26,988 26,733 Diluted loss per share $ (0.91) $ (1.94) $ (2.39)
Schedule of antidilutive securities excluded from computation of diluted earnings per share	The following securities are considered antidilutive and have been excluded from the calculation of Diluted EPS: Fiscal Years Ended June 30, June 30, June 30, (In thousands) Nonvested restricted stock units 863 97 110

Employee Benefit Plans (Tables)

Employee Benefit Plans (Tables)	12 Months Ended
	Jun. 30, 2024
Retirement Benefits [Abstract]
Multiemployer Pension Plans	Our participation in significant plans for the fiscal year ended June 30, 2024 is outlined in the table below. The “EIN/Pension Plan Number” column provides the Employer Identification Number (“EIN”) and the three digit plan number. The zone status is based on the latest information that the Company received from the plan and is certified by the plan’s actuary. Plans in the red zone are generally less than 65 percent funded, plans in the yellow zone are generally less than 80 percent funded, and plans in the green zone are generally at least 80 percent funded. The “FIP/RP Status Pending/Implemented” column indicates plans for which a financial improvement plan (“FIP”) or a rehabilitation plan (“RP”) is either pending or has been implemented. The “Surcharge Imposed” column includes plans in a red zone status that require a payment of a surcharge in excess of regular contributions. Pension Fund EIN/Pension Pension FIP/RP Company Contributions Surcharge 2024 2023 2024 2023 2022 (In thousands) Boilermaker-Blacksmith National Pension Trust 48-6168020/001 Red Red Implemented $ 4,494 $ 5,284 $ 5,208 Yes National Electrical Benefit Fund, IBEW locals 71, 126, 488, and 1319 53-0181657/001 Green Green NA 2,666 3,437 2,973 No Pipefitters Local 460 Pension Plan 51-6108443/001 Green Green NA 4,217 2,479 111 No Joint Pension Fund Local Union 164 IBEW 22-6031199/001 Green Green NA 1,257 1,724 1,514 No IBEW Local 654 Pension Plan 23-6538183/001 Green Green NA 867 1,242 857 No Joint Pension Fund of Local Union No 102 IBEW 22-1615726/001 Green Green NA 403 1,143 906 No IBEW Local 456 Pension Plan 22-6238995/001 Green Green NA 801 1,180 734 No Local 351 IBEW Pension Plan 22-3417366/001 Green Green NA 841 1,033 395 No Steamfitters Local Union No 420 Pension Plan 23-2004424/001 Red Red Implemented 615 656 498 Yes Pipefitters Local 342 Pension Plan 94-3190386/001 Green Green NA 9 498 345 No IBEW Local 98 Pension Plan 23-6583334/001 Yellow Yellow Implemented 634 484 143 No Laborers Local 220 Pension Plan 43-6159056/001 Green Green NA 747 427 24 No Contributions to other multiemployer plans 3,282 3,969 3,110 Total contributions made $ 20,833 $ 23,556 $ 16,818 (1) For the National Electrical Benefit Fund for Locals 71/126/488/1319, Pipefitters Local 460 Pension Plan, Local 351 IBEW Pension Plan, and Laborers Local 220 Pension Plan, we did not receive a funding notification that covered fiscal year 2023 during the preparation of the Form 10-K filed September 12, 2023. Under Federal pension law, if a multiemployer pension plan is determined to be in critical or endangered status, the plan must provide notice of this status to participants, beneficiaries, the bargaining parties, the Pension Benefit Guaranty Corporation, and the Department of Labor. We also observed that these plans have not submitted any Critical or Endangered Status Notices to the Department of Labor for calendar years that we have not received notification. The Critical or Endangered Status Notices can be accessed at https://www.dol.gov/agencies/ebsa/about-ebsa/our-activities/public-disclosure/2024-funding-status-notices#2024-c-and-d.

Segment Information (Tables)

Segment Information (Tables)	12 Months Ended
	Jun. 30, 2024
Segment Reporting [Abstract]
Results of Operations	Storage and Terminal Solutions Utility and Power Infrastructure Process and Industrial Facilities Corporate Total Fiscal Year Ended June 30, 2024 Total revenue (1) $ 276,800 $ 183,920 $ 266,260 $ 1,233 $ 728,213 Cost of revenue (265,503) (174,688) (244,408) (3,141) (687,740) Gross profit (loss) 11,297 9,232 21,852 (1,908) 40,473 Selling, general and administrative expenses 19,823 8,844 10,354 31,064 70,085 Restructuring costs — 52 215 234 501 Operating income (loss) $ (8,526) $ 336 $ 11,283 $ (33,206) $ (30,113) (1) Total revenues are net of inter-segment revenues which are primarily Storage and Terminal Solutions and were $2.4 million for the year ended June 30, 2024. Storage and Terminal Solutions Utility and Power Infrastructure Process and Industrial Facilities Corporate Total Fiscal Year Ended June 30, 2023 Total revenue (1) $ 255,693 $ 169,504 $ 369,823 $ — $ 795,020 Cost of revenue (245,223) (158,805) (359,067) (1,105) (764,200) Gross profit (loss) 10,470 10,699 10,756 (1,105) 30,820 Selling, general and administrative expenses 20,054 7,045 14,909 26,241 68,249 Goodwill impairment — — 12,316 — 12,316 Restructuring costs 969 37 972 1,164 3,142 Operating income (loss) $ (10,553) $ 3,617 $ (17,441) $ (28,510) $ (52,887) (1) Total revenues are net of inter-segment revenues which are primarily Storage and Terminal Solutions and were $5.6 million for the year ended June 30, 2023. Storage and Terminal Solutions Utility and Power Infrastructure Process and Industrial Facilities Corporate Total Fiscal Year Ended June 30, 2022 Total revenue (1) $ 232,839 $ 220,093 $ 254,848 $ — $ 707,780 Cost of revenue (232,577) (228,679) (245,578) (2,152) (708,986) Gross profit (loss) 262 (8,586) 9,270 (2,152) (1,206) Selling, general and administrative expenses 17,284 11,771 12,506 26,129 67,690 Goodwill impairment 7,208 2,659 8,445 — 18,312 Restructuring costs 122 87 (1,578) 2,015 646 Operating loss $ (24,352) $ (23,103) $ (10,103) $ (30,296) $ (87,854) (1) Total revenues are net of inter-segment revenues which are primarily Storage and Terminal Solutions, $3.4 million, and Process and Industrial Solutions, $3.6 million, for the year ended June 30, 2022.
Schedule of Revenue by Major Customers by Reporting Segments	Significant Customers as a Percentage of Segment Revenue Consolidated Storage and Terminal Utility and Power Process and Industrial Facilities Fiscal Year ended June 30, 2024 Customer one 10.5 % 27.7 % — % — % Customer two 10.3 % — % — % 28.2 % Fiscal Year ended June 30, 2023 Customer one 10.7 % — % — % 22.9 % Fiscal Year ended June 30, 2022 Customer one 12.3 % 0.8 % — % 33.5 % Customer two 11.0 % — % 35.5 % — %

Restructuring Costs (Tables)

Restructuring Costs (Tables)	54 Months Ended
	Jun. 30, 2024
Restructuring and Related Activities [Abstract]
Restructuring and Related Costs [Table Text Block]	Restructuring costs incurred are classified as follows: Fiscal Year Ended Since Inception of Business Improvement Plan June 30, 2024 June 30, 2023 June 30, 2022 (in thousands) Restructuring Costs by Type: Severance and other personnel-related costs $ 501 $ 2,787 $ 596 $ 18,202 Total facility costs — 216 33 4,746 Total other intangible asset impairments — — — 1,525 Other costs — 139 17 582 Total restructuring costs $ 501 $ 3,142 $ 646 $ 25,055

Summary of Significant Accoun_4

Summary of Significant Accounting Policies (Details Textual) - USD ($) $ in Thousands	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2021
Restricted Cash and Cash Equivalents Items [Line Items]
Cash and Cash Equivalents, at Carrying Value	$ 115,615	$ 54,812
Restricted Cash	25,000	25,000
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents	$ 140,615	$ 79,812	$ 77,371	$ 83,878
Minimum [Member]
Property, Plant and Equipment [Line Items]
Useful life of intangible assets	6 years
Maximum [Member]
Property, Plant and Equipment [Line Items]
Useful life of intangible assets	15 years
Building [Member]
Property, Plant and Equipment [Line Items]
Depreciable life of PP&E	40 years
Construction Equipment [Member] | Minimum [Member]
Property, Plant and Equipment [Line Items]
Depreciable life of PP&E	3 years
Construction Equipment [Member] | Maximum [Member]
Property, Plant and Equipment [Line Items]
Depreciable life of PP&E	15 years
Transportation Equipment [Member] | Minimum [Member]
Property, Plant and Equipment [Line Items]
Depreciable life of PP&E	3 years
Transportation Equipment [Member] | Maximum [Member]
Property, Plant and Equipment [Line Items]
Depreciable life of PP&E	5 years
Office Equipment and Software [Member] | Minimum [Member]
Property, Plant and Equipment [Line Items]
Depreciable life of PP&E	3 years
Office Equipment and Software [Member] | Maximum [Member]
Property, Plant and Equipment [Line Items]
Depreciable life of PP&E	10 years
International [Member]
Restricted Cash and Cash Equivalents Items [Line Items]
Cash	$ 11,800

Revenue (Details)

Revenue (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Jun. 30, 2022	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2022
Revenue, Performance Obligation [Abstract]
Revenue, Remaining Performance Obligation, Amount		$ 1,100,000
Performance obligations to be recognized as revenue within next twelve months		534,600
Contract with Customer, Asset and Liability [Abstract]
Costs and estimated earnings in excess of billings on uncompleted contracts		33,893	$ 44,888
Change in costs and estimated earnings in excess of billings on uncompleted contracts		(10,995)
Billings on uncompleted contracts in excess of costs and estimated earnings		(171,308)	(85,436)
Change in billings on uncompleted contracts in excess of costs and estimated earnings		(85,872)
Contract with customer, current liability, net		(137,415)	(40,548)
Change in net contract balances		(96,867)
Disclosure Customer Contracts Additional Information [Abstract]
Contract with Customer, Liability, Revenue Recognized		85,300
Contract Receivable Retainage, Next Twelve Months		11,600	16,300
Contract Receivable Retainage, after Next Twelve Months		28,600	10,000
Disaggregation of Revenue [Line Items]
Revenue		728,213	795,020	$ 707,780
Unpriced Change Orders and Claims		9,900	9,700
Process and Industrial Facilities
Disaggregation of Revenue [Line Items]
Revenue		266,260	369,823	254,848
Loss on Contracts			12,600	8,700
Utility and Power Infrastructure Member
Disaggregation of Revenue [Line Items]
Revenue		183,920	169,504	220,093
Storage and Terminal Solutions
Disaggregation of Revenue [Line Items]
Revenue		276,800	255,693	232,839
Loss on Contracts				6,300
Utility and Power Infrastructure Capital Project 1 [Member]
Disaggregation of Revenue [Line Items]
Contract with Customer, Asset, Cumulative Catch-up Adjustment to Revenue, Change in Measure of Progress				3,600
Utility and Power Infrastructure Capital Project 2 [Member]
Disaggregation of Revenue [Line Items]
Revenue				78,100
Contract with Customer, Asset, Cumulative Catch-up Adjustment to Revenue, Change in Measure of Progress	$ 2,200			100
Utility and Power Infrastructure Project 3 [Member]
Disaggregation of Revenue [Line Items]
Contract with Customer, Asset, Cumulative Catch-up Adjustment to Revenue, Change in Measure of Progress				2,100
Fixed-price Contract
Disaggregation of Revenue [Line Items]
Revenue		455,548	419,426	421,188
Time-and-materials Contract
Disaggregation of Revenue [Line Items]
Revenue		272,665	375,594	286,592
UNITED STATES
Disaggregation of Revenue [Line Items]
Revenue		662,449	720,140	640,512
CANADA
Disaggregation of Revenue [Line Items]
Revenue		56,420	61,691	63,045
Other international [Member]
Disaggregation of Revenue [Line Items]
Revenue		$ 9,344	$ 13,189	$ 4,223

Property, Plant, and Equipmen_2

Property, Plant, and Equipment (Details) - USD ($) $ in Thousands	12 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2022
Property, Plant and Equipment [Line Items]
Land Buildings And Improvements Gross	$ 32,610	$ 37,263
Machinery and Equipment, Gross	76,603	84,258
Transportation Equipment Gross	41,075	40,606
Office Equipment and Capitalized Computer Software Gross	34,154	38,178
Finance Lease Gross	33	0
Construction in progress	4,948	84
Property, Plant and Equipment, Gross	189,423	200,389
Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment	(145,925)	(152,844)
Property, plant and equipment, net	43,498	47,545
Long-Lived Assets	62,648	69,344	$ 75,936
Proceeds from asset sales (Note 3)	6,049	6,466	39,018
Gain (Loss) on Disposition of Property Plant Equipment	4,923	2,841	33,114
Depreciation	9,600	12,000	13,400
Industrial Cleaning [Member]
Property, Plant and Equipment [Line Items]
Gain (Loss) on Disposition of Property Plant Equipment		2,900
Proceeds from Divestiture of Businesses		6,300
Holdback receivable		400
Orange California Facility
Property, Plant and Equipment [Line Items]
Proceeds from asset sales (Note 3)			37,400
Gain (Loss) on Disposition of Property Plant Equipment			32,400
UNITED STATES
Property, Plant and Equipment [Line Items]
Long-Lived Assets	57,520	63,174	69,932
CANADA
Property, Plant and Equipment [Line Items]
Long-Lived Assets	1,368	1,957	1,397
International [Member]
Property, Plant and Equipment [Line Items]
Long-Lived Assets	3,760	$ 4,213	$ 4,607
Bakersfield Facility Purchase
Property, Plant and Equipment [Line Items]
Payments to Acquire Buildings	4,100
Catoosa Facility Disposal
Property, Plant and Equipment [Line Items]
Proceeds from asset sales (Note 3)	2,700
Gain (Loss) on Disposition of Property Plant Equipment	2,000
Burlington Office [Member]
Property, Plant and Equipment [Line Items]
Proceeds from asset sales (Note 3)	2,700
Gain (Loss) on Disposition of Property Plant Equipment	$ 2,500

Goodwill and Other Intangible_3

Goodwill and Other Intangible Assets (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended	9 Months Ended	12 Months Ended
	Dec. 31, 2022	Mar. 31, 2022	Dec. 31, 2022	Mar. 31, 2022	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2022
Carrying value of goodwill by segment
Goodwill			$ 42,135	$ 60,636	$ 29,120	$ 42,135	$ 60,636
Goodwill impairment	$ (12,300)		(12,300)			(12,316)	(18,312)
Disposal Group, Including Discontinued Operation, Goodwill						(627)
Translation adjustment					(97)	(72)	(189)
Goodwill attributable to reporting units at risk for impairment					16,600
Goodwill impairment					0	12,316	18,312
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Gross					11,274	15,627
Finite-Lived Intangible Assets, Accumulated Amortization					(9,623)	(12,561)
Net carrying amount					$ 1,651	3,066
Maximum [Member]
Carrying value of goodwill by segment
Finite-Lived Intangible Asset, Useful Life					15 years
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Asset, Useful Life					15 years
Minimum [Member]
Carrying value of goodwill by segment
Finite-Lived Intangible Asset, Useful Life					6 years
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Asset, Useful Life					6 years
Intellectual Property [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Gross					$ 130	2,483
Finite-Lived Intangible Assets, Accumulated Amortization					(109)	(2,371)
Net carrying amount					21	112
Customer Based [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Gross					11,144	13,144
Finite-Lived Intangible Assets, Accumulated Amortization					(9,514)	(10,190)
Net carrying amount					1,630	2,954
Utility and Power Infrastructure
Carrying value of goodwill by segment
Goodwill			4,263	6,984	4,239	4,263	6,984
Goodwill impairment						0	(2,659)
Disposal Group, Including Discontinued Operation, Goodwill						0
Translation adjustment					(33)	(24)	(62)
Process and Industrial Facilities
Carrying value of goodwill by segment
Goodwill			18,427	26,878	5,484	18,427	26,878
Goodwill impairment						(12,316)	(8,445)
Disposal Group, Including Discontinued Operation, Goodwill						(627)
Translation adjustment					0	0	(6)
Storage and Terminal Solutions
Carrying value of goodwill by segment
Goodwill			$ 19,445	26,774	19,397	19,445	26,774
Goodwill impairment		$ 18,300		$ (18,300)		0	(7,208)
Disposal Group, Including Discontinued Operation, Goodwill						0
Translation adjustment					$ (64)	$ (48)	$ (121)

Goodwill and Other Intangible_4

Goodwill and Other Intangible Assets (Details Textual) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2022	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2022
Goodwill and Intangible Assets Disclosure [Abstract]
June 30, 2025			$ 1,096
June 30, 2026			555
Net carrying amount			1,651	$ 3,066
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Gross			11,274	15,627
Finite-Lived Intangible Assets, Accumulated Amortization			(9,623)	(12,561)
Goodwill impairment	$ 12,300	$ 12,300		12,316	$ 18,312
Amortization of Intangible Assets			$ 1,400	$ 1,700	$ 1,800

Goodwill and Other Intangible_5

Goodwill and Other Intangible Assets (Details 1) - USD ($) $ in Thousands	12 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2022
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Gross	$ 11,274	$ 15,627
Finite-Lived Intangible Assets, Accumulated Amortization	(9,623)	(12,561)
Net carrying amount	1,651	3,066
Amortization of Intangible Assets	$ 1,400	1,700	$ 1,800
Minimum [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Asset, Useful Life	6 years
Maximum [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Asset, Useful Life	15 years
Intellectual Property [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Gross	$ 130	2,483
Finite-Lived Intangible Assets, Accumulated Amortization	(109)	(2,371)
Net carrying amount	21	112
Customer based [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Gross	11,144	13,144
Finite-Lived Intangible Assets, Accumulated Amortization	(9,514)	(10,190)
Net carrying amount	$ 1,630	$ 2,954

Asset Backed Debt Provisions (D

Asset Backed Debt Provisions (Details) $ in Thousands	12 Months Ended
	Jun. 30, 2024 USD ($) Rate	Jun. 30, 2023 USD ($)
Debt Disclosure [Abstract]
Line of Credit Facility, Initiation Date	Sep. 09, 2021
ABL Facility Maximum Capacity | $	$ 90,000
Compensating Balance, Amount | $	$ 25,000
Line of credit facility, expiration date	Sep. 09, 2026
ABL Borrowing Base | $	$ 60,900
Borrowings under asset-backed credit facility | $	0	$ 10,000
Letters of Credit Outstanding, Amount | $	6,900
Availability under the ABL Facility | $	54,000
Borrowing Base Minimum During Year | $	60,900
Borrowing Base Maximum During Year | $	$ 74,600
Asset Backed Credit Facility Adjusted Term SOFR Rate Three Month Tenor	26.161
Asset Backed Credit Facility Federal Funds Rate Addition | Rate	0.50%
Asset Backed Credit Facility Adjusted Term SOFR Rate Minimum | Rate	1%
Alternate Base Rate Margin | Rate	1%
Additional Margin on alternate base rate loans, Minimum | Rate	1%
Additional Margin on alternate base rate loans, Maximum | Rate	1.50%
Additional Margin on Adjusted Term SOFR, Minimum | Rate	2%
Additional Margin on Adjusted Term SOFR, Maximum | Rate	2.50%
Unused Credit Facility Fee | Rate	0.25%
Asset Backed Credit Facility Fixed Charge Coverage Ratio Requirement | $	$ 15,000
Asset Backed Line of Credit Percentage Limit for Fixed Charge Coverage Ratio | Rate	15%
Asset Backed Credit Facility Adjusted Term SOFR One Month Add On	11.448
Asset Backed Credit Facility Fixed Charge Coverage Ratio Requirement, Maximum	1
Asset Backed Credit Facility Fixed Charge Coverage Ratio Requirement, Minimum	1

Income Tax Sources (Details)

Income Tax Sources (Details) - USD ($) $ in Thousands	12 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2022
Components of pretax income
Domestic	$ (27,119)	$ (52,636)	$ (53,258)
Foreign	2,107	(125)	(5,025)
Loss before income tax expense (benefit)	$ (25,012)	$ (52,761)	$ (58,283)

Current and Deferred Income Tax

Current and Deferred Income Taxes (Details) - USD ($) $ in Thousands	12 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2022
Current:
Federal	$ (80)	$ (369)	$ 230
State	44	(31)	28
Foreign	0	0	1
Total	(36)	(400)	259
Deferred:
Federal	0	0	2,504
State	0	0	2,858
Foreign	0	0	(4)
Total	0	0	5,358
Provision (benefit) for federal, state and foreign income taxes	$ (36)	$ (400)	$ 5,617

Income Tax Rate Reconciliation

Income Tax Rate Reconciliation (Details) - USD ($) $ in Thousands	12 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2022
Reconciliation between the expected income tax provision applying the domestic federal statutory tax rate and the reported income tax provision
Expected provision (benefit) for federal income taxes at the statutory rate	$ (5,253)	$ (11,080)	$ (12,239)
State income taxes, net of federal benefit	(2,065)	(2,320)	(1,971)
Impairment of non-deductible goodwill	0	0	1,132
Charges without tax benefit	384	358	265
Change in valuation allowance	8,542	12,595	17,943
Excess tax expense (benefit) on stock-based compensation	(61)	1,216	1,019
Research and development and other tax credits	(1,299)	(1,175)	(613)
Foreign tax differential	388	50	(232)
Federal rate differential net operating loss carryback	0	0	141
Change in uncertain tax positions	(81)	(90)	(120)
Other	(591)	46	292
Provision (benefit) for federal, state and foreign income taxes	$ (36)	$ (400)	5,617
Amount of non-deductible goodwill impaired.			$ 5,400

Deferred Income Tax Assets and

Deferred Income Tax Assets and Liabilities Details (Details) - USD ($) $ in Thousands	Jun. 30, 2024	Jun. 30, 2023
Deferred tax assets:
Warranty reserve	$ 283	$ 504
Deferred Tax Assets, Tax Deferred Expense, Reserves and Accruals, Allowance for Doubtful Accounts	52	273
Insurance reserve	941	913
Net operating loss benefit and credit carryforwards	29,626	26,888
Accrued compensation and pension	1,273	964
Stock compensation expense on nonvested deferred shares	3,438	1,794
Book over tax amortization	5,607	7,218
Deferred Tax Liabilities, Deferred Expense, Capitalized Research and Development Costs	12,425	6,592
Foreign currency translation and other	1,324	1,608
Valuation allowance	(49,434)	(41,060)
Total deferred tax assets	5,535	5,694
Deferred tax liabilities:
Tax over book depreciation	5,081	5,472
Receivable holdbacks and other	479	248
Total deferred tax liabilities	5,560	5,720
Net deferred tax asset (liability)	$ (25)	$ (26)

Deferred Income Tax Assets an_2

Deferred Income Tax Assets and Liabilities Summary (Details) - USD ($) $ in Thousands	Jun. 30, 2024	Jun. 30, 2023
Significant components of Company's deferred tax assets and liabilities as reported in consolidated balance sheets
Deferred income tax assets	$ 0	$ 0
Deferred income tax liabilities	(25)	(26)
Net deferred tax asset (liability)	$ (25)	$ (26)

Income Tax Credit Carryforwards

Income Tax Credit Carryforwards (Details) $ in Thousands	12 Months Ended
	Jun. 30, 2024 USD ($)
State and Local Jurisdiction [Member]
Operating Loss Carryforwards [Line Items]
Operating Loss Carryforwards, Limitations on Use	June 2025 to indefinite
Operating Loss Carryforwards	$ 106,191
Foreign Tax Authority [Member]
Operating Loss Carryforwards [Line Items]
Operating Loss Carryforwards, Limitations on Use	June 2033 to June 2044
Operating Loss Carryforwards	$ 31,883
Federal Net Operating Losses
Operating Loss Carryforwards [Line Items]
Tax Credit Carryforward, Description	Indefinite
Tax Credit Carryforward, Amount	$ 40,554
Federal tax credits
Operating Loss Carryforwards [Line Items]
Tax Credit Carryforward, Description	June 2041 to June 2044
Tax Credit Carryforward, Amount	$ 4,849
Foreign tax credit carryforward [Member]
Operating Loss Carryforwards [Line Items]
Tax Credit Carryforward, Description	June 2025
Tax Credit Carryforward, Amount	$ 270
Foreign tax credit carryforwards
Operating Loss Carryforwards [Line Items]
Tax Credit Carryforward, Description	June 2035 to June 2044
Tax Credit Carryforward, Amount	$ 682
State and Local Jurisdiction [Member]
Operating Loss Carryforwards [Line Items]
Tax Credit Carryforward, Description	June 2033 to indefinite
Tax Credit Carryforward, Amount	$ 984

Other Tax Items (Details Textua

Other Tax Items (Details Textual) $ in Millions	Jun. 30, 2024 USD ($)
Income Tax Disclosure [Abstract]
Liability for Uncertain Tax Positions, Noncurrent	$ 0.1

Commitments and Contingencies (

Commitments and Contingencies (Details Textual) - USD ($) $ in Millions			6 Months Ended
	Jul. 31, 2024	Jun. 02, 2022	Dec. 31, 2023	Jun. 30, 2024	Oct. 31, 2022	Apr. 01, 2022
Pro-Tec Coating Company, LLC
Loss Contingencies [Line Items]
Proceeds from Legal Settlements			$ 16.8
Keyera Energy, Inc
Loss Contingencies [Line Items]
Contract receivable in dispute						$ 32.7
Loss Contingency, Actions Taken by Defendant		20.0 million
Loss Contingency Actions Taken By Defendant, Maximum					$ 36
Loss Contingency Actions Taken By Defendant, Minimum					$ 18.8
Keyera Energy, Inc | Subsequent Event [Member]
Loss Contingencies [Line Items]
Loss Contingency, Actions Taken by Defendant	46.9 million
Loss Contingency Actions Taken By Defendant, Maximum	$ 97.9
Loss Contingency Actions Taken By Defendant, Minimum	$ 69.6
5E Boron Americas, LLC
Loss Contingencies [Line Items]
Contract receivable in dispute				$ 5.6

Leases - Narrative (Details)

Leases - Narrative (Details)	Jun. 30, 2024
Maximum Operating Lease Term
Lessee, Lease, Description [Line Items]
Operating lease term (up to)	12 years

Leases - Components of Lease Co

Leases - Components of Lease Costs (Details) - USD ($) $ in Thousands	12 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2022
Lease, Cost [Abstract]
Operating lease expense	$ 5,994	$ 6,635	$ 7,511
Short-term lease expense	21,414	29,598	24,225
Total lease expense	$ 27,408	$ 36,233	$ 31,736

Leases - Maturity Analysis (Det

Leases - Maturity Analysis (Details) - USD ($) $ in Thousands	Jun. 30, 2024	Jun. 30, 2023
Lessee, Operating Lease, Liability, Payment, Due [Abstract]
Fiscal 2025	$ 5,346
Fiscal 2026	5,060
Fiscal 2027	4,801
Fiscal 2028	4,417
Fiscal 2029	3,779
Thereafter	6,153
Total future operating lease payments	29,556
Less: imputed interest	(6,661)
Net present value of future lease payments	22,895
Less: current portion of operating lease payments	3,739	$ 4,661
Non-current operating lease liabilities	$ 19,156	$ 20,660

Leases - Other Lease Informatio

Leases - Other Lease Information (Details)	Jun. 30, 2024
Other Lease Information [Abstract]
Weighted-average remaining lease term (in years)	6 years 1 month 6 days
Weighted-average discount rate	6.30%

Leases - Supplemental Cash Flow

Leases - Supplemental Cash Flow Disclosures (Details) $ in Thousands	12 Months Ended
	Jun. 30, 2024 USD ($)
Supplemental Cash Flow Information [Abstract]
Operating lease payments	$ 5,761
Right-of-Use asset obtained in exchange for operating lease liability	$ 1,956

Stockholders' Equity (Details T

Stockholders' Equity (Details Textual) - shares	12 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2022
Equity, Class of Treasury Stock [Line Items]
Preferred Stock, Shares Authorized	5,000,000
Stock Repurchase Program, Number of Shares Authorized to be Repurchased	2,707,175
Treasury Stock, Shares	579,422	840,899
Line of Credit Facility, Dividend Restrictions	2.5 million
Stock Repurchase Program, Remaining Number of Shares Authorized to be Repurchased	1,349,037
Other Treasury Shares Acquired	55,324	52,864	76,703

Stock-Based Compensation (Detai

Stock-Based Compensation (Details Textual) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2022
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized stock-based compensation expense	$ 9,800
Weighted average period	1 year 9 months 18 days
Excess tax expense (benefits) related to stock compensation vesting	$ 100	$ (1,200)	$ (1,000)
Change in Shares Available Under Plan	1,625,000
Share awards authorized	3,975,000	2,350,000
Share available for grant	2,472,567
Share Based Compensation Arrangement By Share Based Payment Award Fair Value Method Number of Simulations Used	100,000
Deferred shares granted		782,707	696,227
Average grant date fair value		$ 7.04	$ 14.13
Deferred shares vested and released		259,529	268,403
Weighted average fair value		$ 14.19	$ 13.92
Deferred Compensation Arrangement with Individual, Allocated Share-Based Compensation Expense	$ 7,700	$ 6,800	$ 7,900
Deferred Compensation Arrangement with Individual, Allocated Share-Based Compensation Expense	$ 7,700	6,800	7,900
Share Based Comp Arrangement By Share Based Payment Award Number Of Shares Authorized - Increase	3,975,000
Share-based Compensation	$ 7,745	$ 6,791	$ 7,877
Other Noncurrent Liabilities
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Aggregate Intrinsic Value, Outstanding	2,000
Accrued Liabilities
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Aggregate Intrinsic Value, Outstanding	2,400
Additional Paid-In Capital [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-Based Payment Adjustment	$ 1,000
Employee Award [Member] | Minimum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period	4 years
Director Awards [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period	1 year
Market Based Awards [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period	3 years
Pro-rate of original awards, minimum	0%
Pro-rate of original awards maximum	200%
Vest in 2023 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Minimum threshold shares scheduled to vest for performance based shares	377,000
Vest in 2024 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Minimum threshold shares scheduled to vest for performance based shares	431,000
Vest in 2025 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Minimum threshold shares scheduled to vest for performance based shares	626,000

Stock-Based Compensation (Det_2

Stock-Based Compensation (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2022
Share-based Compensation Arrangement by Share-based Payment Award, Options, Additional Disclosures [Abstract]
Share based compensation arrangement by share based payment award deferred cancellations in period.		214,017	242,743
Share Based Compensation Arrangement By Share Based Payment Award Deferred Shares Cancelled Weighted Average Grant Date Fair Value		$ 21.89	$ 25.50
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeited in Period	329,489
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized	3,975,000	2,350,000
Share Based Comp Arrangement By Share Based Payment Award Number Of Shares Authorized - Increase	3,975,000
Stock Issued During Period, Value, Restricted Stock Award, Gross	$ 3,000	$ 1,500	$ 2,600
Share-based Compensation	$ 7,745	$ 6,791	$ 7,877
Share Based Compensation Arrangement By Share Based Payment Award Deferred Weighted Average Grant Date Fair Value		$ 7.04	$ 14.13
Share Based Compensation Arrangement By Share Based Payment Award Fair Value Method Number of Simulations Used	100,000
Deferred Compensation Arrangement with Individual, Allocated Share-Based Compensation Expense	$ 7,700	$ 6,800	$ 7,900

Stock-Based Compensation - Rest

Stock-Based Compensation - Restricted Stock Units (Details) - USD ($) $ / shares in Units, $ in Millions	12 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2022
Nonvested deferred share activity
Nonvested shares at June 30, 2022	1,774,949
Shares cancelled	(329,489)
Nonvested shares at June 30, 2023	2,187,560	1,774,949
Weighted average grant date fair value per share at June 30, 2022	$ 10.66
Weighted average grant date fair value per share granted	11.11
Weighted average grant date fair value per share vested and released	9.40
Weighted average grant date fair value per share cancelled	11.61
Weighted average grant date fair value per share at June 30, 2023	$ 10.90	$ 10.66
Share based compensation arrangement by share based payment award deferred cancellations in period.		214,017	242,743
Share Based Compensation Arrangement By Share Based Payment Award Deferred Shares Cancelled Weighted Average Grant Date Fair Value		$ 21.89	$ 25.50
Stock Issued During Period, Value, Restricted Stock Award, Gross	$ 3	$ 1.5	$ 2.6
Restricted Stock or Unit Expense	$ 5	$ 1.3	$ 0.6
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeited in Period	329,489
Cash Performance Awards
Nonvested deferred share activity
Shares granted	360,030	251,575	231,219
Shares vested and released	(165,109)	(106,637)
Shares cancelled		(13,621)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period	360,030	251,575	231,219
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period	165,109	106,637
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period, Fair Value	$ 1.4	$ 1.1
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeited in Period		13,621
Restricted Stock Award, Forfeitures		$ 0.1
Share Based Performance Awards
Nonvested deferred share activity
Shares granted	1,039,126
Shares vested and released	(297,026)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period	1,039,126
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period	297,026

Earnings per Common Share (Deta

Earnings per Common Share (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2022
Diluted EPS:
Weighted average shares outstanding	27,379,000	26,988,000	26,733,000
Diluted weighted average shares	27,379,000	26,988,000	26,733,000
Diluted loss per common share (in dollars per share)	$ (0.91)	$ (1.94)	$ (2.39)
Basic EPS:
Net income (loss)	$ (24,976)	$ (52,361)	$ (63,900)
Weighted average shares outstanding	27,379,000	26,988,000	26,733,000
Basic loss per common share (in dollars per share)	$ (0.91)	$ (1.94)	$ (2.39)
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount	863	97	110

Employee Benefit Plans (Details

Employee Benefit Plans (Details Textual) - USD ($)	12 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2022
Employee Benefit Plans (Textual) [Abstract]
Percentage of limitation on pretax compensation	75%
Company match of first 3% of employee contributions	100%
Percentage of employee contribution for first half	3%
Employee contribution for next 2%	50%
Percentage of employee contribution for next half	2%
Contribution made by company	$ 5,100,000	$ 5,300,000	$ 5,300,000
Employee share purchase limit aggregate market value	$ 60,000
Shares available at ESPP	1,000,000
Shares issued under ESPP	19,775	50,139	29,826
Multiemployer Plans [Line Items]
Number of unions contributed to	100
Defined Contribution Plan, Cost	$ 5,100,000	$ 5,300,000	$ 5,300,000
Employee stock purchase plan number of shares available for purchase	750,482
Total contributions made	$ 20,833,000	$ 23,556,000	$ 16,818,000
Zone Red [Member]
Multiemployer Plans [Line Items]
Description of plans funded	less than 65 percent
Defined Benefit Plan, Funded Percentage	65%
Zone Yellow [Member]
Multiemployer Plans [Line Items]
Description of plans funded	less than 80 percent
Defined Benefit Plan, Funded Percentage	80%
Zone Green [Member]
Multiemployer Plans [Line Items]
Description of plans funded	at least 80 percent
Defined Benefit Plan, Funded Percentage	80%

Employee Benefit Plans (Detai_2

Employee Benefit Plans (Details) - USD ($)	12 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2022
Multiemployer Plans [Line Items]
Contributions to other multiemployer plans	$ 3,282,000	$ 3,969,000	$ 3,110,000
Total contributions made	20,833,000	23,556,000	16,818,000
Defined Contribution Plan, Cost	$ 5,100,000	$ 5,300,000	5,300,000
Zone Green [Member]
Multiemployer Plans [Line Items]
Defined Benefit Plan, Funded Percentage	80%
Zone Red [Member]
Multiemployer Plans [Line Items]
Defined Benefit Plan, Funded Percentage	65%
Zone Yellow [Member]
Multiemployer Plans [Line Items]
Defined Benefit Plan, Funded Percentage	80%
Boilermaker-Blacksmith National Pension Trust [Member]
Multiemployer Plans [Line Items]
EIN/Pension Plan Number	48-6168020/001
Multiemployer Plans, Underfunded Status, Description	Red	Red
FIP/RP Status Pending or Implemented	Implemented
Multiemployer Plan, Employer Contribution, Cost	$ 4,494,000	$ 5,284,000	5,208,000
Surcharge Imposed	Yes
National Electrical Benefit Fund, Local 488 and 126 [Member]
Multiemployer Plans [Line Items]
EIN/Pension Plan Number	53-0181657/001
Multiemployer Plans, Underfunded Status, Description	Green	Green
FIP/RP Status Pending or Implemented	NA
Multiemployer Plan, Employer Contribution, Cost	$ 2,666,000	$ 3,437,000	2,973,000
Surcharge Imposed	No
Joint Pension Fund Local Union One Six Four Ibew [Domain]
Multiemployer Plans [Line Items]
EIN/Pension Plan Number	22-6031199/001
Multiemployer Plans, Underfunded Status, Description	Green	Green
FIP/RP Status Pending or Implemented	NA
Multiemployer Plan, Employer Contribution, Cost	$ 1,257,000	$ 1,724,000	1,514,000
Surcharge Imposed	No
Joint Pension Fund Local Union Number 102 IBEW [Member] [Domain]
Multiemployer Plans [Line Items]
EIN/Pension Plan Number	22-1615726/001
Multiemployer Plans, Underfunded Status, Description	Green	Green
FIP/RP Status Pending or Implemented	NA
Multiemployer Plan, Employer Contribution, Cost	$ 403,000	$ 1,143,000	906,000
Surcharge Imposed	No
IBEW Local 456 Pension Plan [Member] [Domain]
Multiemployer Plans [Line Items]
EIN/Pension Plan Number	22-6238995/001
Multiemployer Plans, Underfunded Status, Description	Green	Green
FIP/RP Status Pending or Implemented	NA
Multiemployer Plan, Employer Contribution, Cost	$ 801,000	$ 1,180,000	734,000
Surcharge Imposed	No
Local 351 IBEW Pension Plan [Member]
Multiemployer Plans [Line Items]
EIN/Pension Plan Number	22-3417366/001
Multiemployer Plans, Underfunded Status, Description	Green	Green
FIP/RP Status Pending or Implemented	NA
Multiemployer Plan, Employer Contribution, Cost	$ 841,000	$ 1,033,000	395,000
Surcharge Imposed	No
Steamfitters Local Union Number 420 Pension Plan [Member] [Domain]
Multiemployer Plans [Line Items]
EIN/Pension Plan Number	23-2004424/001
Multiemployer Plans, Underfunded Status, Description	Red	Red
FIP/RP Status Pending or Implemented	Implemented
Multiemployer Plan, Employer Contribution, Cost	$ 615,000	$ 656,000	498,000
Surcharge Imposed	Yes
IBEW Local 654 Pension Plan
Multiemployer Plans [Line Items]
EIN/Pension Plan Number	23-6538183/001
Multiemployer Plans, Underfunded Status, Description	Green	Green
FIP/RP Status Pending or Implemented	NA
Multiemployer Plan, Employer Contribution, Cost	$ 867,000	$ 1,242,000	857,000
Surcharge Imposed	No
Pipefitters Local Four Six Zero Pension Plan
Multiemployer Plans [Line Items]
EIN/Pension Plan Number	51-6108443/001
Multiemployer Plans, Underfunded Status, Description	Green	Green
FIP/RP Status Pending or Implemented	NA
Multiemployer Plan, Employer Contribution, Cost	$ 4,217,000	$ 2,479,000	111,000
Surcharge Imposed	No
Pipefitters Local 342 Pension Plan
Multiemployer Plans [Line Items]
EIN/Pension Plan Number	94-3190386/001
Multiemployer Plans, Underfunded Status, Description	Green	Green
FIP/RP Status Pending or Implemented	NA
Multiemployer Plan, Employer Contribution, Cost	$ 9,000	$ 498,000	345,000
Surcharge Imposed	No
IBEW Local 98 Pension Plan
Multiemployer Plans [Line Items]
EIN/Pension Plan Number	23-6583334/001
Multiemployer Plans, Underfunded Status, Description	Yellow	Yellow
FIP/RP Status Pending or Implemented	Implemented
Multiemployer Plan, Employer Contribution, Cost	$ 634,000	$ 484,000	143,000
Surcharge Imposed	No
Laborers Local 220 Pension Plan
Multiemployer Plans [Line Items]
EIN/Pension Plan Number	43-6159056/001
Multiemployer Plans, Underfunded Status, Description	Green	Green
FIP/RP Status Pending or Implemented	NA
Multiemployer Plan, Employer Contribution, Cost	$ 747,000	$ 427,000	$ 24,000
Surcharge Imposed	No

Segment Information (Details)

Segment Information (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended	9 Months Ended	12 Months Ended			54 Months Ended
	Dec. 31, 2022	Mar. 31, 2022	Dec. 31, 2022	Mar. 31, 2022	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2024
Segment Reporting Information [Line Items]
Long-Lived Assets					$ 62,648	$ 69,344	$ 75,936	$ 62,648
Cost of revenue					(687,740)	(764,200)	(708,986)
Restructuring costs					501	3,142	646	25,055
Revenue					728,213	795,020	707,780
Gross profit (loss)					40,473	30,820	(1,206)
Selling, general and administrative expenses					70,085	68,249	67,690
Operating loss					(30,113)	(52,887)	(87,854)
Goodwill impairment	$ 12,300		$ 12,300			12,316	18,312
Assets					451,351	400,504	440,793	451,351
UNITED STATES
Segment Reporting Information [Line Items]
Long-Lived Assets					57,520	63,174	69,932	57,520
Revenue					662,449	720,140	640,512
CANADA
Segment Reporting Information [Line Items]
Long-Lived Assets					1,368	1,957	1,397	1,368
Revenue					56,420	61,691	63,045
International [Member]
Segment Reporting Information [Line Items]
Long-Lived Assets					3,760	4,213	4,607	3,760
Utility and Power Infrastructure
Segment Reporting Information [Line Items]
Cost of revenue					(174,688)	(158,805)	(228,679)
Restructuring costs					52
Gross profit (loss)					9,232	10,699	(8,586)
Goodwill impairment						0	2,659
Process and Industrial Facilities
Segment Reporting Information [Line Items]
Cost of revenue					(244,408)	(359,067)	(245,578)
Restructuring costs					215	972	(1,578)
Revenue					266,260	369,823	254,848
Gross profit (loss)					21,852	10,756	9,270
Selling, general and administrative expenses					10,354	14,909	12,506
Operating loss					11,283	(17,441)	(10,103)
Goodwill impairment						12,316	8,445
Assets					81,524	90,514	104,078	81,524
Storage and Terminal Solutions
Segment Reporting Information [Line Items]
Cost of revenue					(265,503)	(245,223)	(232,577)
Restructuring costs					0	969	122
Revenue					276,800	255,693	232,839
Gross profit (loss)					11,297	10,470	262
Selling, general and administrative expenses					19,823	20,054	17,284
Operating loss					(8,526)	(10,553)	(24,352)
Goodwill impairment		$ (18,300)		$ 18,300		0	7,208
Assets					138,529	139,333	141,084	138,529
Utility and Power Infrastructure Member
Segment Reporting Information [Line Items]
Restructuring costs						37	87
Revenue					183,920	169,504	220,093
Selling, general and administrative expenses					8,844	7,045	11,771
Operating loss					336	3,617	(23,103)
Assets					84,108	67,630	94,059	84,108
Corporate Segment
Segment Reporting Information [Line Items]
Cost of revenue					(3,141)	(1,105)	(2,152)
Restructuring costs					234	1,164	2,015
Revenue					1,233	0	0
Gross profit (loss)					(1,908)	(1,105)	(2,152)
Selling, general and administrative expenses					31,064	26,241	26,129
Operating loss					(33,206)	(28,510)	(30,296)
Goodwill impairment						0	0
Assets					$ 147,190	$ 103,027	$ 101,572	$ 147,190

Segment Information (Details 2)

Segment Information (Details 2) - Customer Concentration Risk [Member] - Revenue Benchmark [Member]	12 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2022
Customer One [Member]
Revenue, Major Customer [Line Items]
Percentage of Revenue	10.50%	10.70%	12.30%
Customer Two [Member]
Revenue, Major Customer [Line Items]
Percentage of Revenue	10.30%		11%
Utility and Power Infrastructure | Customer One [Member]
Revenue, Major Customer [Line Items]
Percentage of Revenue	0%	0%	0%
Utility and Power Infrastructure | Customer Two [Member]
Revenue, Major Customer [Line Items]
Percentage of Revenue	0%		35.50%
Process and Industrial Facilities | Customer One [Member]
Revenue, Major Customer [Line Items]
Percentage of Revenue	0%	22.90%	33.50%
Process and Industrial Facilities | Customer Two [Member]
Revenue, Major Customer [Line Items]
Percentage of Revenue	28.20%		0%
Storage and Terminal Solutions | Customer One [Member]
Revenue, Major Customer [Line Items]
Percentage of Revenue	27.70%	0%	0.80%
Storage and Terminal Solutions | Customer Two [Member]
Revenue, Major Customer [Line Items]
Percentage of Revenue	0%		0%

Restructuring Costs (Details)

Restructuring Costs (Details) - USD ($)	12 Months Ended			54 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2024
Restructuring Cost and Reserve [Line Items]
Severance costs and other benefits	$ 501,000	$ 2,787,000	$ 596,000	$ 18,202,000
Facility costs	0	216,000	33,000	4,746,000
Other intangible asset impairments	0	0	0	1,525,000
Other Restructuring Costs	0	139,000	17,000	582,000
Restructuring costs	$ 501,000	$ 3,142,000	$ 646,000	$ 25,055,000

Valuation and Qualifying Acco_2

Valuation and Qualifying Accounts (Details) - USD ($) $ in Thousands	12 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2022
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]
Balance at Beginning of Period	$ 42,121	$ 29,935	$ 12,002
Charged to Costs and Expenses	8,545	12,507	18,681
Charged to Other Accounts	0	0	0
Deductions	(1,031)	(321)	(748)
Balance at End of Period	49,635	42,121	29,935
SEC Schedule, 12-09, Allowance, Credit Loss [Member]
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]
Balance at Beginning of Period	1,061	1,320	898
Charged to Costs and Expenses	3	(88)	738
Charged to Other Accounts	0	0	0
Deductions	(863)	(171)	(316)
Balance at End of Period	201	1,061	1,320
SEC Schedule, 12-09, Valuation Allowance, Deferred Tax Asset [Member]
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]
Balance at Beginning of Period	41,060	28,615	11,104
Charged to Costs and Expenses	8,542	12,595	17,943
Charged to Other Accounts	0	0	0
Deductions	(168)	(150)	(432)
Balance at End of Period	$ 49,434	$ 41,060	$ 28,615

Uncategorized Items - mtrx-2024

Label	Element	Value
Utility And Power Infrastructure Segment [Member]
Goodwill	us-gaap_Goodwill	$ 4,206,000
Process and Industrial Facilities Segment [Member]
Goodwill	us-gaap_Goodwill	5,484,000
Storage and Terminal Solutions Segment [Member]
Goodwill	us-gaap_Goodwill	$ 19,333,000