$MTRX
MATRIX SERVICE CO Stock $mtrx

$mtrx Overview Financials Valuation SEC Filings Company Website

2021 Q2 Form 10-K Financial Statement

#000086627321000088 Filed on September 13, 2021

Income Statement

Concept	2021 Q2	2021 Q1	2021
Revenue	$174.9M	$148.3M	$673.4M
YoY Change	-10.69%	-40.3%	-38.83%
Cost Of Revenue	$173.4M	$146.7M	$640.6M
YoY Change	-1.84%	-35.62%	-35.86%
Gross Profit	$1.542M	$1.560M	$32.77M
YoY Change	-91.98%	-92.38%	-67.93%
Gross Profit Margin	0.88%	1.05%	4.87%
Selling, General & Admin	$17.73M	$17.18M	$69.76M
YoY Change	-10.03%	-12.88%	-19.15%
% of Gross Profit	1149.48%	1101.22%	212.9%
Research & Development
YoY Change
% of Gross Profit
Depreciation & Amortization	$4.218M	$4.350M	$17.86M
YoY Change	-10.82%	-7.25%	-6.62%
% of Gross Profit	273.54%	278.85%	54.5%
Operating Expenses	$17.72M	$17.18M	$69.76M
YoY Change	-10.03%	-12.88%	-19.15%
Operating Profit	-$16.35M	-$17.48M	-$43.75M
YoY Change	106.49%	201.36%	19.45%
Interest Expense	-$474.0K	$322.0K	$1.559M
YoY Change	58.0%	-19.1%	-2.38%
% of Operating Profit
Other Income/Expense, Net	$68.00K	-$157.0K	$1.917M
YoY Change	-90.29%	-79.53%	522.4%
Pretax Income	-$16.76M	-$17.93M	-$43.26M
YoY Change	120.53%	171.34%	18.06%
Income Tax	-$4.014M	-$5.060M	-$12.04M
% Of Pretax Income
Net Earnings	-$10.72M	-$12.87M	-$31.22M
YoY Change	87.4%	134.27%	-5.59%
Net Earnings / Revenue	-6.13%	-8.68%	-4.64%
Basic Earnings Per Share	-$0.40	-$0.49	-$1.18
Diluted Earnings Per Share	-$0.40	-$0.49	-$1.18
COMMON SHARES
Basic Shares Outstanding	26.52M shares	26.52M shares	26.45M shares
Diluted Shares Outstanding		26.52M shares	26.45M shares

Balance Sheet

Concept	2021 Q2	2021 Q1	2021
SHORT-TERM ASSETS
Cash & Short-Term Investments	$83.88M	$73.80M	$83.88M
YoY Change	-16.12%	-15.66%	-16.12%
Cash & Equivalents	$83.88M	$73.75M	$83.88M
Short-Term Investments
Other Short-Term Assets	$4.230M	$7.013M	$4.230M
YoY Change	-6.54%	-16.8%	-6.0%
Inventory	$7.342M	$6.217M	$7.342M
Prepaid Expenses
Receivables	$148.0M	$158.1M	$178.8M
Other Receivables	$16.97M	$11.40M	$16.97M
Total Short-Term Assets	$291.2M	$294.5M	$291.2M
YoY Change	-13.11%	-20.76%	-13.12%
LONG-TERM ASSETS
Property, Plant & Equipment	$69.41M	$72.73M	$91.82M
YoY Change	-14.04%	-13.38%	-10.07%
Goodwill	$60.64M	$60.61M
YoY Change	0.44%	0.54%
Intangibles	$6.614M	$7.181M
YoY Change	-25.16%	-35.39%
Long-Term Investments
YoY Change
Other Assets	$11.97M	$11.05M	$17.27M
YoY Change	147.73%	22.24%	59.89%
Total Long-Term Assets	$176.3M	$177.2M	$176.3M
YoY Change	-3.19%	-9.46%	-3.16%
TOTAL ASSETS
Total Short-Term Assets	$291.2M	$294.5M	$291.2M
Total Long-Term Assets	$176.3M	$177.2M	$176.3M
Total Assets	$467.6M	$471.7M	$467.6M
YoY Change	-9.62%	-16.86%	-9.62%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable	$60.92M	$50.16M	$60.92M
YoY Change	-16.66%	-35.06%	-16.66%
Accrued Expenses	$38.65M	$39.60M	$38.65M
YoY Change	-0.9%	-14.47%	-0.9%
Deferred Revenue	$53.83M	$59.50M
YoY Change	-15.74%	-40.84%
Short-Term Debt	$0.00	$0.00	$0.00
YoY Change
Long-Term Debt Due
YoY Change
Total Short-Term Liabilities	$153.4M	$149.2M	$153.4M
YoY Change	-12.81%	-33.4%	-12.79%
LONG-TERM LIABILITIES
Long-Term Debt	$0.00	$0.00	$0.00
YoY Change	-100.0%	-100.0%	-100.0%
Other Long-Term Liabilities	$28.58M	$28.50M	$28.58M
YoY Change	18.1%	9528.38%	18.1%
Total Long-Term Liabilities	$28.58M	$28.50M	$28.58M
YoY Change	-14.43%	210.32%	-14.43%
TOTAL LIABILITIES
Total Short-Term Liabilities	$153.4M	$149.2M	$153.4M
Total Long-Term Liabilities	$28.58M	$28.50M	$28.58M
Total Liabilities	$182.0M	$177.8M	$182.0M
YoY Change	-13.09%	-30.52%	-13.08%
SHAREHOLDERS EQUITY
Retained Earnings	$175.2M	$185.9M
YoY Change	-15.13%	-12.36%
Common Stock	$279.0K	$279.0K
YoY Change	0.0%	0.0%
Preferred Stock
YoY Change
Treasury Stock (at cost)	$20.74M	$21.28M
YoY Change	-29.41%	-28.0%
Treasury Stock Shares	1.339M shares	1.369M shares
Shareholders Equity	$285.5M	$293.9M	$285.5M
YoY Change
Total Liabilities & Shareholders Equity	$467.6M	$471.7M	$467.6M
YoY Change	-9.62%	-16.86%	-9.62%

Cashflow Statement

Concept	2021 Q2	2021 Q1	2021
OPERATING ACTIVITIES
Net Income	-$10.72M	-$12.87M	-$31.22M
YoY Change	87.4%	134.27%	-5.59%
Depreciation, Depletion And Amortization	$4.218M	$4.350M	$17.86M
YoY Change	-10.82%	-7.25%	-6.62%
Cash From Operating Activities	$10.24M	-$19.03M	-$2.971M
YoY Change	-18.74%	166.53%	-106.74%
INVESTING ACTIVITIES
Capital Expenditures	-$454.0K	-$830.0K	$4.354M
YoY Change	-48.99%	-73.73%	-76.51%
Acquisitions
YoY Change
Other Investing Activities	$310.0K	$150.0K	$2.090M
YoY Change	-22.5%	-76.56%	47.18%
Cash From Investing Activities	-$154.0K	-$680.0K	-$2.264M
YoY Change	-68.57%	-72.91%	-86.77%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net		$92.00K	$0.00
YoY Change			-100.0%
Debt Paid & Issued, Net
YoY Change
Cash From Financing Activities	-144.0K	-330.0K	-$12.32M
YoY Change	-305.71%	-97.28%	-23.16%
NET CHANGE
Cash From Operating Activities	10.24M	-19.03M	-$2.971M
Cash From Investing Activities	-154.0K	-680.0K	-$2.264M
Cash From Financing Activities	-144.0K	-330.0K	-$12.32M
Net Change In Cash	9.941M	-20.04M	-$16.16M
YoY Change	-18.38%	-7.99%	-256.55%
FREE CASH FLOW
Cash From Operating Activities	$10.24M	-$19.03M	-$2.971M
Capital Expenditures	-$454.0K	-$830.0K	$4.354M
Free Cash Flow	$10.69M	-$18.20M	-$7.325M
YoY Change	-20.73%	357.29%	-128.67%

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value	Unit
CY2021	dei	Entity Central Index Key EntityCentralIndexKey	0000866273
CY2021	dei	Current Fiscal Year End Date CurrentFiscalYearEndDate	--06-30
CY2021	dei	Document Fiscal Year Focus DocumentFiscalYearFocus	2021
CY2021	dei	Document Fiscal Period Focus DocumentFiscalPeriodFocus	FY
CY2021	dei	Amendment Flag AmendmentFlag	false
CY2021	us-gaap	Other Comprehensive Income Loss Foreign Currency Translation Adjustment Tax OtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentTax	223000	USD
CY2020	us-gaap	Other Comprehensive Income Loss Foreign Currency Translation Adjustment Tax OtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentTax	-88000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Foreign Currency Translation Adjustment Tax OtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentTax	27000	USD
CY2021Q2	us-gaap	Allowance For Doubtful Accounts Receivable Current AllowanceForDoubtfulAccountsReceivableCurrent	898000	USD
CY2020Q2	us-gaap	Allowance For Doubtful Accounts Receivable Current AllowanceForDoubtfulAccountsReceivableCurrent	905000	USD
CY2021Q2	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	0.01
CY2020Q2	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	0.01
CY2021Q2	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	60000000	shares
CY2020Q2	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	60000000	shares
CY2021Q2	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	27888217	shares
CY2020Q2	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	27888217	shares
CY2021Q2	us-gaap	Shares Outstanding SharesOutstanding	26549438	shares
CY2020Q2	us-gaap	Shares Outstanding SharesOutstanding	26141528	shares
CY2021Q2	us-gaap	Treasury Stock Shares TreasuryStockShares	1338779	shares
CY2020Q2	us-gaap	Treasury Stock Shares TreasuryStockShares	1746689	shares
CY2021	us-gaap	Stock Issued During Period Shares Stock Options Exercised StockIssuedDuringPeriodSharesStockOptionsExercised	34150	shares
CY2021	mtrx	Deferred Shares Issued DeferredSharesIssued	515218	shares
CY2021	us-gaap	Stock Issued During Period Shares Employee Stock Purchase Plans StockIssuedDuringPeriodSharesEmployeeStockPurchasePlans	29171	shares
CY2021	mtrx	Other Treasury Shares Acquired OtherTreasurySharesAcquired	170629	shares
CY2021	us-gaap	Treasury Stock Shares Acquired TreasuryStockSharesAcquired	0	shares
CY2020	us-gaap	Stock Issued During Period Shares Stock Options Exercised StockIssuedDuringPeriodSharesStockOptionsExercised	0	shares
CY2020	mtrx	Deferred Shares Issued DeferredSharesIssued	542279	shares
CY2020	us-gaap	Stock Issued During Period Shares Employee Stock Purchase Plans StockIssuedDuringPeriodSharesEmployeeStockPurchasePlans	20733	shares
CY2020	mtrx	Other Treasury Shares Acquired OtherTreasurySharesAcquired	181081	shares
CY2020	us-gaap	Treasury Stock Shares Acquired TreasuryStockSharesAcquired	1047606	shares
CY2019	us-gaap	Stock Issued During Period Shares Stock Options Exercised StockIssuedDuringPeriodSharesStockOptionsExercised	12500	shares
CY2019	mtrx	Deferred Shares Issued DeferredSharesIssued	314711	shares
CY2019	us-gaap	Stock Issued During Period Shares Employee Stock Purchase Plans StockIssuedDuringPeriodSharesEmployeeStockPurchasePlans	15812	shares
CY2019	mtrx	Other Treasury Shares Acquired OtherTreasurySharesAcquired	79111	shares
CY2019	us-gaap	Treasury Stock Shares Acquired TreasuryStockSharesAcquired	310532	shares
CY2021Q2	us-gaap	Preferred Stock Shares Authorized PreferredStockSharesAuthorized	5000000.0	shares
CY2020Q2	us-gaap	Preferred Stock Shares Authorized PreferredStockSharesAuthorized	5000000.0	shares
CY2021Q2	us-gaap	Preferred Stock Shares Issued PreferredStockSharesIssued	0	shares
CY2020Q2	us-gaap	Preferred Stock Shares Issued PreferredStockSharesIssued	0	shares
CY2021Q2	us-gaap	Preferred Stock Shares Outstanding PreferredStockSharesOutstanding	0	shares
CY2020Q2	us-gaap	Preferred Stock Shares Outstanding PreferredStockSharesOutstanding	0	shares
CY2019	us-gaap	Effective Income Tax Rate Reconciliation Share Based Compensation Excess Tax Benefit Amount EffectiveIncomeTaxRateReconciliationShareBasedCompensationExcessTaxBenefitAmount	-300000	USD
CY2019	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercises In Period Total Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue	100000	USD
CY2019	us-gaap	Defined Contribution Plan Cost Recognized DefinedContributionPlanCostRecognized	6200000	USD
CY2021	dei	Document Type DocumentType	10-K
CY2021	dei	Document Annual Report DocumentAnnualReport	true
CY2021	dei	Document Period End Date DocumentPeriodEndDate	2021-06-30
CY2021	dei	Document Transition Report DocumentTransitionReport	false
CY2021	dei	Entity File Number EntityFileNumber	001-15461
CY2021	dei	Entity Registrant Name EntityRegistrantName	MATRIX SERVICE CO
CY2021	dei	Entity Incorporation State Country Code EntityIncorporationStateCountryCode	DE
CY2021	dei	Entity Tax Identification Number EntityTaxIdentificationNumber	73-1352174
CY2021	dei	Entity Address Address Line1 EntityAddressAddressLine1	5100 E. Skelly Drive,
CY2021	dei	Entity Address Address Line2 EntityAddressAddressLine2	Suite 500
CY2021	dei	Entity Address Postal Zip Code EntityAddressPostalZipCode	74135
CY2021	dei	Entity Address City Or Town EntityAddressCityOrTown	Tulsa,
CY2021	dei	Entity Address State Or Province EntityAddressStateOrProvince	OK
CY2021	dei	City Area Code CityAreaCode	918
CY2021	dei	Local Phone Number LocalPhoneNumber	838-8822
CY2021	dei	Security12b Title Security12bTitle	Common Stock, par value $0.01 per share
CY2021	dei	Trading Symbol TradingSymbol	MTRX
CY2021	dei	Security Exchange Name SecurityExchangeName	NASDAQ
CY2021	dei	Entity Well Known Seasoned Issuer EntityWellKnownSeasonedIssuer	No
CY2021	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	-29600000	USD
CY2021	dei	Entity Voluntary Filers EntityVoluntaryFilers	No
CY2021	dei	Entity Current Reporting Status EntityCurrentReportingStatus	Yes
CY2021	dei	Entity Interactive Data Current EntityInteractiveDataCurrent	Yes
CY2021	dei	Entity Filer Category EntityFilerCategory	Accelerated Filer
CY2021	dei	Entity Small Business EntitySmallBusiness	false
CY2021	dei	Entity Emerging Growth Company EntityEmergingGrowthCompany	false
CY2021	dei	Icfr Auditor Attestation Flag IcfrAuditorAttestationFlag	true
CY2021	dei	Entity Shell Company EntityShellCompany	false
CY2020Q4	dei	Entity Public Float EntityPublicFloat	284000000	USD
CY2021Q3	dei	Entity Common Stock Shares Outstanding EntityCommonStockSharesOutstanding	26697028	shares
CY2021	dei	Document Period End Date DocumentPeriodEndDate	2021-06-30
CY2021	us-gaap	Revenues Revenues	673398000	USD
CY2020	us-gaap	Revenues Revenues	1100938000	USD
CY2019	us-gaap	Revenues Revenues	1416680000	USD
CY2021	us-gaap	Cost Of Goods And Services Sold CostOfGoodsAndServicesSold	640633000	USD
CY2020	us-gaap	Cost Of Goods And Services Sold CostOfGoodsAndServicesSold	998762000	USD
CY2019	us-gaap	Cost Of Goods And Services Sold CostOfGoodsAndServicesSold	1284729000	USD
CY2021	us-gaap	Gross Profit GrossProfit	32765000	USD
CY2020	us-gaap	Gross Profit GrossProfit	102176000	USD
CY2019	us-gaap	Gross Profit GrossProfit	131951000	USD
CY2021	us-gaap	Selling General And Administrative Expense SellingGeneralAndAdministrativeExpense	69756000	USD
CY2020	us-gaap	Selling General And Administrative Expense SellingGeneralAndAdministrativeExpense	86276000	USD
CY2019	us-gaap	Selling General And Administrative Expense SellingGeneralAndAdministrativeExpense	94021000	USD
CY2021	us-gaap	Goodwill And Intangible Asset Impairment GoodwillAndIntangibleAssetImpairment	0	USD
CY2020	us-gaap	Goodwill And Intangible Asset Impairment GoodwillAndIntangibleAssetImpairment	38515000	USD
CY2019	us-gaap	Goodwill And Intangible Asset Impairment GoodwillAndIntangibleAssetImpairment	0	USD
CY2021	us-gaap	Restructuring Charges RestructuringCharges	6756000	USD
CY2020	us-gaap	Restructuring Charges RestructuringCharges	14010000	USD
CY2019	us-gaap	Restructuring Charges RestructuringCharges	0	USD
CY2021	us-gaap	Operating Income Loss OperatingIncomeLoss	-43747000	USD
CY2020	us-gaap	Operating Income Loss OperatingIncomeLoss	-36625000	USD
CY2019	us-gaap	Operating Income Loss OperatingIncomeLoss	37930000	USD
CY2021	us-gaap	Interest Expense InterestExpense	1559000	USD
CY2020	us-gaap	Interest Expense InterestExpense	1597000	USD
CY2019	us-gaap	Interest Expense InterestExpense	1296000	USD
CY2021	us-gaap	Investment Income Interest InvestmentIncomeInterest	126000	USD
CY2020	us-gaap	Investment Income Interest InvestmentIncomeInterest	1270000	USD
CY2019	us-gaap	Investment Income Interest InvestmentIncomeInterest	1167000	USD
CY2021	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	1917000	USD
CY2020	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	308000	USD
CY2019	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	611000	USD
CY2021	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	-43263000	USD
CY2020	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	-36644000	USD
CY2019	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	38412000	USD
CY2021	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	-12039000	USD
CY2020	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	-3570000	USD
CY2019	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	10430000	USD
CY2021	us-gaap	Profit Loss ProfitLoss	-31224000	USD
CY2020	us-gaap	Profit Loss ProfitLoss	-33074000	USD
CY2019	us-gaap	Profit Loss ProfitLoss	27982000	USD
CY2021	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-1.18
CY2020	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-1.24
CY2019	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.04
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CY2019	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.01
CY2021	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	26451000	shares
CY2020	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	26621000	shares
CY2019	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	26891000	shares
CY2021	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	26451000	shares
CY2020	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	26621000	shares
CY2019	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	27587000	shares
CY2021	us-gaap	Profit Loss ProfitLoss	-31224000	USD
CY2020	us-gaap	Profit Loss ProfitLoss	-33074000	USD
CY2019	us-gaap	Profit Loss ProfitLoss	27982000	USD
CY2021	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	1624000	USD
CY2020	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-622000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-340000	USD
CY2020	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	-33696000	USD
CY2019	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	27642000	USD
CY2021Q2	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	83878000	USD
CY2020Q2	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	100036000	USD
CY2021Q2	us-gaap	Accounts Receivable Net Current AccountsReceivableNetCurrent	148030000	USD
CY2020Q2	us-gaap	Accounts Receivable Net Current AccountsReceivableNetCurrent	160671000	USD
CY2021Q2	us-gaap	Contract With Customer Asset Net Current ContractWithCustomerAssetNetCurrent	30774000	USD
CY2020Q2	us-gaap	Contract With Customer Asset Net Current ContractWithCustomerAssetNetCurrent	59548000	USD
CY2021Q2	us-gaap	Inventory Net InventoryNet	7342000	USD
CY2020Q2	us-gaap	Inventory Net InventoryNet	6460000	USD
CY2021Q2	us-gaap	Income Taxes Receivable IncomeTaxesReceivable	16965000	USD
CY2020Q2	us-gaap	Income Taxes Receivable IncomeTaxesReceivable	3919000	USD
CY2021Q2	us-gaap	Other Assets Current OtherAssetsCurrent	4230000	USD
CY2020Q2	us-gaap	Other Assets Current OtherAssetsCurrent	4526000	USD
CY2021Q2	us-gaap	Assets Current AssetsCurrent	291219000	USD
CY2020Q2	us-gaap	Assets Current AssetsCurrent	335160000	USD
CY2021Q2	mtrx	Land Buildings And Improvements Gross LandBuildingsAndImprovementsGross	41633000	USD
CY2020Q2	mtrx	Land Buildings And Improvements Gross LandBuildingsAndImprovementsGross	42695000	USD
CY2021Q2	us-gaap	Machinery And Equipment Gross MachineryAndEquipmentGross	94453000	USD
CY2020Q2	us-gaap	Machinery And Equipment Gross MachineryAndEquipmentGross	94154000	USD
CY2021Q2	mtrx	Transportation Equipment Gross TransportationEquipmentGross	50510000	USD
CY2020Q2	mtrx	Transportation Equipment Gross TransportationEquipmentGross	55864000	USD
CY2021Q2	mtrx	Office Equipment And Capitalized Computer Software Gross OfficeEquipmentAndCapitalizedComputerSoftwareGross	42706000	USD
CY2020Q2	mtrx	Office Equipment And Capitalized Computer Software Gross OfficeEquipmentAndCapitalizedComputerSoftwareGross	39356000	USD
CY2021Q2	us-gaap	Construction In Progress Gross ConstructionInProgressGross	493000	USD
CY2020Q2	us-gaap	Construction In Progress Gross ConstructionInProgressGross	4427000	USD
CY2021Q2	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	229795000	USD
CY2020Q2	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	236496000	USD
CY2021Q2	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	160388000	USD
CY2020Q2	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	155748000	USD
CY2021Q2	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	69407000	USD
CY2020Q2	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	80748000	USD
CY2021Q2	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	22412000	USD
CY2020Q2	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	21375000	USD
CY2021Q2	us-gaap	Goodwill Goodwill	60636000	USD
CY2020Q2	us-gaap	Goodwill Goodwill	60369000	USD
CY2021Q2	us-gaap	Intangible Assets Net Excluding Goodwill IntangibleAssetsNetExcludingGoodwill	6614000	USD
CY2020Q2	us-gaap	Intangible Assets Net Excluding Goodwill IntangibleAssetsNetExcludingGoodwill	8837000	USD
CY2021Q2	us-gaap	Deferred Income Tax Assets Net DeferredIncomeTaxAssetsNet	5295000	USD
CY2020Q2	us-gaap	Deferred Income Tax Assets Net DeferredIncomeTaxAssetsNet	5988000	USD
CY2021Q2	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	11973000	USD
CY2020Q2	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	4833000	USD
CY2021Q2	us-gaap	Assets Assets	467556000	USD
CY2020Q2	us-gaap	Assets Assets	517310000	USD
CY2021Q2	us-gaap	Accounts Payable Current AccountsPayableCurrent	60920000	USD
CY2020Q2	us-gaap	Accounts Payable Current AccountsPayableCurrent	73094000	USD
CY2021Q2	us-gaap	Contract With Customer Liability Current ContractWithCustomerLiabilityCurrent	53832000	USD
CY2020Q2	us-gaap	Contract With Customer Liability Current ContractWithCustomerLiabilityCurrent	63889000	USD
CY2021Q2	us-gaap	Employee Related Liabilities Current EmployeeRelatedLiabilitiesCurrent	21008000	USD
CY2020Q2	us-gaap	Employee Related Liabilities Current EmployeeRelatedLiabilitiesCurrent	16205000	USD
CY2021Q2	us-gaap	Accrued Insurance Current AccruedInsuranceCurrent	6568000	USD
CY2020Q2	us-gaap	Accrued Insurance Current AccruedInsuranceCurrent	7301000	USD
CY2021Q2	us-gaap	Operating Lease Liability Current OperatingLeaseLiabilityCurrent	5747000	USD
CY2020Q2	us-gaap	Operating Lease Liability Current OperatingLeaseLiabilityCurrent	7568000	USD
CY2021Q2	us-gaap	Other Liabilities Current OtherLiabilitiesCurrent	5327000	USD
CY2020Q2	us-gaap	Other Liabilities Current OtherLiabilitiesCurrent	7890000	USD
CY2021Q2	us-gaap	Liabilities Current LiabilitiesCurrent	153402000	USD
CY2020Q2	us-gaap	Liabilities Current LiabilitiesCurrent	175947000	USD
CY2021Q2	us-gaap	Deferred Income Tax Liabilities Net DeferredIncomeTaxLiabilitiesNet	34000	USD
CY2020Q2	us-gaap	Deferred Income Tax Liabilities Net DeferredIncomeTaxLiabilitiesNet	61000	USD
CY2021Q2	us-gaap	Operating Lease Liability Noncurrent OperatingLeaseLiabilityNoncurrent	20771000	USD
CY2020Q2	us-gaap	Operating Lease Liability Noncurrent OperatingLeaseLiabilityNoncurrent	19997000	USD
CY2021Q2	us-gaap	Line Of Credit LineOfCredit	0	USD
CY2020Q2	us-gaap	Line Of Credit LineOfCredit	9208000	USD
CY2021Q2	us-gaap	Liabilities Other Than Longterm Debt Noncurrent LiabilitiesOtherThanLongtermDebtNoncurrent	7810000	USD
CY2020Q2	us-gaap	Liabilities Other Than Longterm Debt Noncurrent LiabilitiesOtherThanLongtermDebtNoncurrent	4208000	USD
CY2021Q2	us-gaap	Liabilities Liabilities	182017000	USD
CY2020Q2	us-gaap	Liabilities Liabilities	209421000	USD
CY2021Q2	us-gaap	Commitments And Contingencies CommitmentsAndContingencies		USD
CY2020Q2	us-gaap	Commitments And Contingencies CommitmentsAndContingencies		USD
CY2021Q2	us-gaap	Common Stock Value CommonStockValue	279000	USD
CY2020Q2	us-gaap	Common Stock Value CommonStockValue	279000	USD
CY2021Q2	us-gaap	Additional Paid In Capital AdditionalPaidInCapital	137575000	USD
CY2020Q2	us-gaap	Additional Paid In Capital AdditionalPaidInCapital	138966000	USD
CY2021Q2	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	175178000	USD
CY2020Q2	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	206402000	USD
CY2021Q2	us-gaap	Accumulated Other Comprehensive Income Loss Foreign Currency Translation Adjustment Net Of Tax AccumulatedOtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentNetOfTax	-6749000	USD
CY2020Q2	us-gaap	Accumulated Other Comprehensive Income Loss Foreign Currency Translation Adjustment Net Of Tax AccumulatedOtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentNetOfTax	-8373000	USD
CY2021Q2	us-gaap	Stockholders Equity Before Treasury Stock StockholdersEquityBeforeTreasuryStock	306283000	USD
CY2020Q2	us-gaap	Stockholders Equity Before Treasury Stock StockholdersEquityBeforeTreasuryStock	337274000	USD
CY2021Q2	us-gaap	Treasury Stock Value TreasuryStockValue	20744000	USD
CY2020Q2	us-gaap	Treasury Stock Value TreasuryStockValue	29385000	USD
CY2021	us-gaap	Other Asset Impairment Charges OtherAssetImpairmentCharges	454000	USD
CY2020	us-gaap	Other Asset Impairment Charges OtherAssetImpairmentCharges	5215000	USD
CY2021Q2	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	285539000	USD
CY2020Q2	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	307889000	USD
CY2021Q2	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	467556000	USD
CY2020Q2	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	517310000	USD
CY2021	us-gaap	Profit Loss ProfitLoss	-31224000	USD
CY2020	us-gaap	Profit Loss ProfitLoss	-33074000	USD
CY2019	us-gaap	Profit Loss ProfitLoss	27982000	USD
CY2021	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	17858000	USD
CY2020	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	19124000	USD
CY2019	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	18224000	USD
CY2021	us-gaap	Goodwill And Intangible Asset Impairment GoodwillAndIntangibleAssetImpairment	0	USD
CY2020	us-gaap	Goodwill And Intangible Asset Impairment GoodwillAndIntangibleAssetImpairment	38515000	USD
CY2019	us-gaap	Goodwill And Intangible Asset Impairment GoodwillAndIntangibleAssetImpairment	0	USD
CY2021	us-gaap	Share Based Compensation ShareBasedCompensation	8156000	USD
CY2020	us-gaap	Share Based Compensation ShareBasedCompensation	9877000	USD
CY2019	us-gaap	Share Based Compensation ShareBasedCompensation	11908000	USD
CY2019	us-gaap	Other Asset Impairment Charges OtherAssetImpairmentCharges	0	USD
CY2021	mtrx	Deferred Income Tax Expense Benefit Socf DeferredIncomeTaxExpenseBenefitSocf	889000	USD
CY2020	mtrx	Deferred Income Tax Expense Benefit Socf DeferredIncomeTaxExpenseBenefitSocf	-3630000	USD
CY2019	mtrx	Deferred Income Tax Expense Benefit Socf DeferredIncomeTaxExpenseBenefitSocf	2061000	USD
CY2021	us-gaap	Gain Loss On Sale Of Business GainLossOnSaleOfBusiness	0	USD
CY2020	us-gaap	Gain Loss On Sale Of Business GainLossOnSaleOfBusiness	0	USD
CY2019	us-gaap	Gain Loss On Sale Of Business GainLossOnSaleOfBusiness	-427000	USD
CY2021	us-gaap	Gain Loss On Sale Of Property Plant Equipment GainLossOnSaleOfPropertyPlantEquipment	1201000	USD
CY2020	us-gaap	Gain Loss On Sale Of Property Plant Equipment GainLossOnSaleOfPropertyPlantEquipment	767000	USD
CY2019	us-gaap	Gain Loss On Sale Of Property Plant Equipment GainLossOnSaleOfPropertyPlantEquipment	854000	USD
CY2021	us-gaap	Provision For Doubtful Accounts ProvisionForDoubtfulAccounts	85000	USD
CY2020	us-gaap	Provision For Doubtful Accounts ProvisionForDoubtfulAccounts	1158000	USD
CY2019	us-gaap	Provision For Doubtful Accounts ProvisionForDoubtfulAccounts	5000	USD
CY2021	us-gaap	Other Noncash Income Expense OtherNoncashIncomeExpense	460000	USD
CY2020	us-gaap	Other Noncash Income Expense OtherNoncashIncomeExpense	-7000	USD
CY2019	us-gaap	Other Noncash Income Expense OtherNoncashIncomeExpense	701000	USD
CY2021	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	11109000	USD
CY2020	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	56603000	USD
CY2019	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	-15374000	USD
CY2021	us-gaap	Increase Decrease In Contract With Customer Asset IncreaseDecreaseInContractWithCustomerAsset	28774000	USD
CY2020	us-gaap	Increase Decrease In Contract With Customer Asset IncreaseDecreaseInContractWithCustomerAsset	36535000	USD
CY2019	us-gaap	Increase Decrease In Contract With Customer Asset IncreaseDecreaseInContractWithCustomerAsset	-19809000	USD
CY2021	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	-882000	USD
CY2020	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	1557000	USD
CY2019	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	-2872000	USD
CY2021	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	-21916000	USD
CY2020	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	11029000	USD
CY2019	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	-12246000	USD
CY2021	us-gaap	Increase Decrease In Accounts Payable IncreaseDecreaseInAccountsPayable	-12387000	USD
CY2020	us-gaap	Increase Decrease In Accounts Payable IncreaseDecreaseInAccountsPayable	-38915000	USD
CY2019	us-gaap	Increase Decrease In Accounts Payable IncreaseDecreaseInAccountsPayable	32651000	USD
CY2021	us-gaap	Increase Decrease In Contract With Customer Liability IncreaseDecreaseInContractWithCustomerLiability	-8610000	USD
CY2020	us-gaap	Increase Decrease In Contract With Customer Liability IncreaseDecreaseInContractWithCustomerLiability	-41737000	USD
CY2019	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	19558000	USD
CY2019	us-gaap	Increase Decrease In Contract With Customer Liability IncreaseDecreaseInContractWithCustomerLiability	-14983000	USD
CY2021	us-gaap	Increase Decrease In Accrued Liabilities IncreaseDecreaseInAccruedLiabilities	5464000	USD
CY2020	us-gaap	Increase Decrease In Accrued Liabilities IncreaseDecreaseInAccruedLiabilities	-17398000	USD
CY2019	us-gaap	Increase Decrease In Accrued Liabilities IncreaseDecreaseInAccruedLiabilities	14427000	USD
CY2021	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	-2971000	USD
CY2020	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	44085000	USD
CY2019	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	41394000	USD
CY2021	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	4354000	USD
CY2020	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	18539000	USD
CY2021	us-gaap	Proceeds From Divestiture Of Businesses ProceedsFromDivestitureOfBusinesses	0	USD
CY2020	us-gaap	Proceeds From Divestiture Of Businesses ProceedsFromDivestitureOfBusinesses	0	USD
CY2019	us-gaap	Proceeds From Divestiture Of Businesses ProceedsFromDivestitureOfBusinesses	3885000	USD
CY2021	us-gaap	Proceeds From Sale Of Productive Assets ProceedsFromSaleOfProductiveAssets	2090000	USD
CY2020	us-gaap	Proceeds From Sale Of Productive Assets ProceedsFromSaleOfProductiveAssets	1423000	USD
CY2019	us-gaap	Proceeds From Sale Of Productive Assets ProceedsFromSaleOfProductiveAssets	1225000	USD
CY2021	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-2264000	USD
CY2020	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-17116000	USD
CY2019	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-14448000	USD
CY2021	us-gaap	Proceeds From Long Term Lines Of Credit ProceedsFromLongTermLinesOfCredit	1125000	USD
CY2020	us-gaap	Proceeds From Long Term Lines Of Credit ProceedsFromLongTermLinesOfCredit	18567000	USD
CY2019	us-gaap	Proceeds From Long Term Lines Of Credit ProceedsFromLongTermLinesOfCredit	16225000	USD
CY2021	us-gaap	Repayments Of Long Term Lines Of Credit RepaymentsOfLongTermLinesOfCredit	10913000	USD
CY2020	us-gaap	Repayments Of Long Term Lines Of Credit RepaymentsOfLongTermLinesOfCredit	14357000	USD
CY2019	us-gaap	Repayments Of Long Term Lines Of Credit RepaymentsOfLongTermLinesOfCredit	10896000	USD
CY2021	us-gaap	Payments Of Debt Issuance Costs PaymentsOfDebtIssuanceCosts	1275000	USD
CY2020	us-gaap	Payments Of Debt Issuance Costs PaymentsOfDebtIssuanceCosts	0	USD
CY2019	us-gaap	Payments Of Debt Issuance Costs PaymentsOfDebtIssuanceCosts	0	USD
CY2021	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	0	USD
CY2020	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	17045000	USD
CY2019	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	5190000	USD
CY2021	us-gaap	Proceeds From Stock Options Exercised ProceedsFromStockOptionsExercised	349000	USD
CY2020	us-gaap	Proceeds From Stock Options Exercised ProceedsFromStockOptionsExercised	0	USD
CY2019	us-gaap	Proceeds From Stock Options Exercised ProceedsFromStockOptionsExercised	128000	USD
CY2021	us-gaap	Proceeds From Stock Plans ProceedsFromStockPlans	299000	USD
CY2020	us-gaap	Proceeds From Stock Plans ProceedsFromStockPlans	320000	USD
CY2019	us-gaap	Proceeds From Stock Plans ProceedsFromStockPlans	311000	USD
CY2021	us-gaap	Payments For Repurchase Of Other Equity PaymentsForRepurchaseOfOtherEquity	1554000	USD
CY2020	us-gaap	Payments For Repurchase Of Other Equity PaymentsForRepurchaseOfOtherEquity	3524000	USD
CY2019	us-gaap	Payments For Repurchase Of Other Equity PaymentsForRepurchaseOfOtherEquity	1685000	USD
CY2021	us-gaap	Repayments Of Other Debt RepaymentsOfOtherDebt	355000	USD
CY2020	us-gaap	Repayments Of Other Debt RepaymentsOfOtherDebt	0	USD
CY2019	us-gaap	Repayments Of Other Debt RepaymentsOfOtherDebt	0	USD
CY2021	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-12324000	USD
CY2020	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-16039000	USD
CY2019	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-1107000	USD
CY2021	us-gaap	Effect Of Exchange Rate On Cash And Cash Equivalents EffectOfExchangeRateOnCashAndCashEquivalents	1401000	USD
CY2020	us-gaap	Effect Of Exchange Rate On Cash And Cash Equivalents EffectOfExchangeRateOnCashAndCashEquivalents	-609000	USD
CY2019	us-gaap	Effect Of Exchange Rate On Cash And Cash Equivalents EffectOfExchangeRateOnCashAndCashEquivalents	-181000	USD
CY2021	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	-16158000	USD
CY2020	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	10321000	USD
CY2019	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	25658000	USD
CY2020Q2	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	100036000	USD
CY2019Q2	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	89715000	USD
CY2018Q2	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	64057000	USD
CY2021Q2	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	83878000	USD
CY2020Q2	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	100036000	USD
CY2019Q2	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	89715000	USD
CY2021	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	451000	USD
CY2020	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	6394000	USD
CY2019	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	3309000	USD
CY2021	us-gaap	Interest Paid Net InterestPaidNet	1834000	USD
CY2020	us-gaap	Interest Paid Net InterestPaidNet	2148000	USD
CY2019	us-gaap	Interest Paid Net InterestPaidNet	1705000	USD
CY2021	us-gaap	Capital Expenditures Incurred But Not Yet Paid CapitalExpendituresIncurredButNotYetPaid	106000	USD
CY2020	us-gaap	Capital Expenditures Incurred But Not Yet Paid CapitalExpendituresIncurredButNotYetPaid	48000	USD
CY2019	us-gaap	Capital Expenditures Incurred But Not Yet Paid CapitalExpendituresIncurredButNotYetPaid	2686000	USD
CY2018Q2	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	318843000	USD
CY2019	us-gaap	Profit Loss ProfitLoss	27982000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-340000	USD
CY2019	us-gaap	Stock Issued During Period Value Employee Stock Purchase Plan StockIssuedDuringPeriodValueEmployeeStockPurchasePlan	311000	USD
CY2019	us-gaap	Stock Issued During Period Value Stock Options Exercised StockIssuedDuringPeriodValueStockOptionsExercised	128000	USD
CY2019	mtrx	Issuance Of Deferred Shares IssuanceOfDeferredShares	0	USD
CY2019	mtrx	Other Treasury Share Purchases OtherTreasurySharePurchases	1685000	USD
CY2019	us-gaap	Treasury Stock Value Acquired Cost Method TreasuryStockValueAcquiredCostMethod	-5190000	USD
CY2019	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	11908000	USD
CY2019Q2	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	351957000	USD
CY2020	us-gaap	Profit Loss ProfitLoss	-33074000	USD
CY2020	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-622000	USD
CY2020	us-gaap	Stock Issued During Period Value Employee Stock Purchase Plan StockIssuedDuringPeriodValueEmployeeStockPurchasePlan	320000	USD
CY2020	mtrx	Issuance Of Deferred Shares IssuanceOfDeferredShares	0	USD
CY2020	mtrx	Other Treasury Share Purchases OtherTreasurySharePurchases	3524000	USD
CY2020	us-gaap	Treasury Stock Value Acquired Cost Method TreasuryStockValueAcquiredCostMethod	-17045000	USD
CY2020	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	9877000	USD
CY2020Q2	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	307889000	USD
CY2021	us-gaap	Profit Loss ProfitLoss	-31224000	USD
CY2021	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	1624000	USD
CY2021	us-gaap	Stock Issued During Period Value Employee Stock Purchase Plan StockIssuedDuringPeriodValueEmployeeStockPurchasePlan	299000	USD
CY2021	us-gaap	Stock Issued During Period Value Stock Options Exercised StockIssuedDuringPeriodValueStockOptionsExercised	349000	USD
CY2021	mtrx	Issuance Of Deferred Shares IssuanceOfDeferredShares	0	USD
CY2021	mtrx	Other Treasury Share Purchases OtherTreasurySharePurchases	1554000	USD
CY2021	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	8156000	USD
CY2021Q2	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	285539000	USD
CY2021	us-gaap	Use Of Estimates UseOfEstimates	<div style="margin-top:9pt;text-align:justify"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-style:italic;font-weight:700;line-height:120%">Use of Estimates</span></div><div style="margin-top:9pt;text-align:justify"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">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, valuation reserves on our accounts receivable and 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.</span></div>
CY2020Q2	mtrx	Contract With Customer Current Liability Net ContractWithCustomerCurrentLiabilityNet	-4341000	USD
CY2021Q2	us-gaap	Revenue Remaining Performance Obligation RevenueRemainingPerformanceObligation	365600000	USD
CY2021Q2	mtrx	Performanceobligationstoberecognizedasrevenuewithinnexttwelvemonths Performanceobligationstoberecognizedasrevenuewithinnexttwelvemonths	297600000	USD
CY2021Q2	us-gaap	Contract With Customer Asset Net Current ContractWithCustomerAssetNetCurrent	30774000	USD
CY2020Q2	us-gaap	Contract With Customer Asset Net Current ContractWithCustomerAssetNetCurrent	59548000	USD
CY2021	mtrx	Changein Cie ChangeinCIE	-28774000	USD
CY2021Q2	us-gaap	Contract With Customer Liability Current ContractWithCustomerLiabilityCurrent	53832000	USD
CY2020Q2	us-gaap	Contract With Customer Liability Current ContractWithCustomerLiabilityCurrent	63889000	USD
CY2021	mtrx	Changein Bie ChangeinBIE	10057000	USD
CY2021Q2	mtrx	Contract With Customer Current Liability Net ContractWithCustomerCurrentLiabilityNet	-23058000	USD
CY2020Q2	us-gaap	Construction Contractor Receivable Retainage After Year One ConstructionContractorReceivableRetainageAfterYearOne	1600000	USD
CY2021	mtrx	Changeinnetcontractbalances Changeinnetcontractbalances	-18717000	USD
CY2021	us-gaap	Contract With Customer Liability Revenue Recognized ContractWithCustomerLiabilityRevenueRecognized	58600000	USD
CY2021Q2	us-gaap	Construction Contractor Receivable Retainage Year One ConstructionContractorReceivableRetainageYearOne	19900000	USD
CY2020Q2	us-gaap	Construction Contractor Receivable Retainage Year One ConstructionContractorReceivableRetainageYearOne	37300000	USD
CY2021Q2	us-gaap	Construction Contractor Receivable Retainage After Year One ConstructionContractorReceivableRetainageAfterYearOne	3100000	USD
CY2021	us-gaap	Revenues Revenues	673398000	USD
CY2020	us-gaap	Revenues Revenues	1100938000	USD
CY2019	us-gaap	Revenues Revenues	1416680000	USD
CY2021	us-gaap	Revenues Revenues	673398000	USD
CY2020	us-gaap	Revenues Revenues	1100938000	USD
CY2019	us-gaap	Revenues Revenues	1416680000	USD
CY2021	us-gaap	Loss Contingency Related Receivable Carrying Value Period Increase Decrease LossContingencyRelatedReceivableCarryingValuePeriodIncreaseDecrease	-2900000	USD
CY2021	us-gaap	Loss Contingency Receivable Proceeds LossContingencyReceivableProceeds	8900000	USD
CY2018Q2	us-gaap	Goodwill Goodwill	96162000	USD
CY2019	us-gaap	Goodwill Written Off Related To Sale Of Business Unit GoodwillWrittenOffRelatedToSaleOfBusinessUnit	-2775000	USD
CY2019	us-gaap	Goodwill Foreign Currency Translation Gain Loss GoodwillForeignCurrencyTranslationGainLoss	-19000	USD
CY2019Q2	us-gaap	Goodwill Goodwill	93368000	USD
CY2020	us-gaap	Goodwill Impairment Loss GoodwillImpairmentLoss	-32881000	USD
CY2020	us-gaap	Goodwill Foreign Currency Translation Gain Loss GoodwillForeignCurrencyTranslationGainLoss	-118000	USD
CY2020Q2	us-gaap	Goodwill Goodwill	60369000	USD
CY2021	us-gaap	Goodwill Foreign Currency Translation Gain Loss GoodwillForeignCurrencyTranslationGainLoss	267000	USD
CY2021Q2	us-gaap	Goodwill Goodwill	60636000	USD
CY2021Q2	mtrx	Goodwill Attributable To Reporting Units At Risk For Impairment GoodwillAttributableToReportingUnitsAtRiskForImpairment	37700000	USD
CY2021Q2	us-gaap	Finite Lived Intangible Assets Gross FiniteLivedIntangibleAssetsGross	19837000	USD
CY2021Q2	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	13223000	USD
CY2021Q2	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	6614000	USD
CY2020Q2	us-gaap	Finite Lived Intangible Assets Gross FiniteLivedIntangibleAssetsGross	24419000	USD
CY2020Q2	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	15582000	USD
CY2020Q2	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	8837000	USD
CY2021	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	2300000	USD
CY2020	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	3400000	USD
CY2019	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	3300000	USD
CY2021Q2	us-gaap	Finite Lived Intangible Assets Amortization Expense Next Twelve Months FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths	1819000	USD
CY2021Q2	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Two FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo	1729000	USD
CY2021Q2	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Three FiniteLivedIntangibleAssetsAmortizationExpenseYearThree	1415000	USD
CY2021Q2	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Four FiniteLivedIntangibleAssetsAmortizationExpenseYearFour	1096000	USD
CY2021Q2	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Five FiniteLivedIntangibleAssetsAmortizationExpenseYearFive	555000	USD
CY2021Q2	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	6614000	USD
CY2021Q3	us-gaap	Line Of Credit Facility Initiation Date1 LineOfCreditFacilityInitiationDate1	2021-09-09
CY2021Q3	us-gaap	Line Of Credit Facility Maximum Amount Outstanding During Period LineOfCreditFacilityMaximumAmountOutstandingDuringPeriod	100000000	USD
CY2021Q3	us-gaap	Line Of Credit Facility Increase Decrease For Period Net LineOfCreditFacilityIncreaseDecreaseForPeriodNet	15000000	USD
CY2021Q3	us-gaap	Compensating Balance Amount CompensatingBalanceAmount	25000000	USD
CY2021Q3	us-gaap	Line Of Credit Facility Current Borrowing Capacity LineOfCreditFacilityCurrentBorrowingCapacity	25900000	USD
CY2021Q3	us-gaap	Letters Of Credit Outstanding Amount LettersOfCreditOutstandingAmount	43500000	USD
CY2021Q3	us-gaap	Line Of Credit Facility Expiration Date1 LineOfCreditFacilityExpirationDate1	2026-09-09
CY2021Q3	mtrx	Mtrx Asset Backed Credit Facility Federal Funds Rate Addition MtrxAssetBackedCreditFacility_FederalFundsRateAddition	-0.0050
CY2021Q3	mtrx	Mtrx Asset Backed Credit Facility Libor Rate One Month Add On MtrxAssetBackedCreditFacilityLIBORRateOneMonthAddOn	0.0100
CY2021Q3	mtrx	Line Of Credit Basis Spread On Alternate Base Rate Minimum LineOfCreditBasisSpreadOnAlternateBaseRateMinimum	0.0100
CY2021Q3	mtrx	Line Of Credit Basis Spread On Alternate Base Rate Maximum LineOfCreditBasisSpreadOnAlternateBaseRateMaximum	0.0150
CY2021Q3	mtrx	Line Of Credit Basis Spread On Adjusted Libo And Cdor Minimum LineOfCreditBasisSpreadOnAdjustedLIBOAndCDORMinimum	0.0200
CY2021Q3	mtrx	Line Of Credit Basis Spread On Adjusted Libo And Cdor Maximum LineOfCreditBasisSpreadOnAdjustedLIBOAndCDORMaximum	0.0250
CY2021Q3	us-gaap	Line Of Credit Facility Unused Capacity Commitment Fee Percentage LineOfCreditFacilityUnusedCapacityCommitmentFeePercentage	0.0025
CY2021Q3	mtrx	Mtrx Asset Backed Lineof Credit Balance Limitfor Fixed Charge Coverage Ratio MtrxAssetBackedLineofCreditBalanceLimitforFixedChargeCoverageRatio	15000000	USD
CY2021Q3	mtrx	Mtrx Asset Backed Lineof Credit Percentage Limitfor Fixed Charge Coverage Ratio MtrxAssetBackedLineofCreditPercentageLimitforFixedChargeCoverageRatio	0.1500
CY2021Q3	mtrx	Asset Backed Credit Facility Fixed Charge Coverage Ratio Requirement AssetBackedCreditFacilityFixedChargeCoverageRatioRequirement	1.00	USD
CY2021Q3	mtrx	Asset Backed Credit Facility Fixed Charge Coverage Ratio Requirement AssetBackedCreditFacilityFixedChargeCoverageRatioRequirement	1.00	USD
CY2021Q2	us-gaap	Line Of Credit Facility Maximum Borrowing Capacity LineOfCreditFacilityMaximumBorrowingCapacity	200000000	USD
CY2021	us-gaap	Line Of Credit Facility Expiration Date1 LineOfCreditFacilityExpirationDate1	2023-11-02
CY2021Q2	us-gaap	Letters Of Credit Outstanding Amount LettersOfCreditOutstandingAmount	41300000	USD
CY2019Q2	us-gaap	Letters Of Credit Outstanding Amount LettersOfCreditOutstandingAmount	34500000	USD
CY2021Q2	mtrx	Prior Credit Agreement Lowest Margin PriorCreditAgreementLowestMargin	0.0100
CY2021Q2	mtrx	Prior Credit Agreement Highest Margin PriorCreditAgreementHighestMargin	0.0350
CY2021Q2	mtrx	Prior Credit Agreement Lowest Unused Credit Facility Fee PriorCreditAgreementLowestUnusedCreditFacilityFee	0.0035
CY2021Q2	mtrx	Prior Credit Agreement Highest Unused Credit Facility Fee PriorCreditAgreementHighestUnusedCreditFacilityFee	0.0050
CY2020Q1	mtrx	Cares Act Total Benefit CARESActTotalBenefit	2200000000000	USD
CY2020Q1	mtrx	Taxable Income Limitation Required For Net Operating Loss Carryforwards TaxableIncomeLimitationRequiredForNetOperatingLossCarryforwards	0.80
CY2020Q1	mtrx	Cares Act Interest Expense Deduction Upper Limit CARESActInterestExpenseDeductionUpperLimit	0.50
CY2020Q1	mtrx	Cares Act Interest Expense Deduction Floor CARESActInterestExpenseDeductionFloor	0.30
CY2020Q1	mtrx	Cares Act Charitable Contributions Deduction New Ceiling CARESActCharitableContributionsDeductionNewCeiling	0.25
CY2020Q1	mtrx	Cares Act Charitable Contributions Deduction Old Ceiling CARESActCharitableContributionsDeductionOldCeiling	0.10
CY2021	mtrx	Mtrx Mtrx Cares Act Nol Carryback Benefit MtrxMtrxCARESActNOLCarrybackBenefit	5200000	USD
CY2021	us-gaap	Increase Decrease In Income Taxes Receivable IncreaseDecreaseInIncomeTaxesReceivable	13000000	USD
CY2021Q2	mtrx	Caresact Deferred Payroll Tax Liability CARESACTDeferredPayrollTaxLiability	11100000	USD
CY2020	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	-376000	USD
CY2019	us-gaap	Income Loss From Continuing Operations Before Income Taxes Domestic IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic	46032000	USD
CY2021	us-gaap	Income Loss From Continuing Operations Before Income Taxes Foreign IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign	-4396000	USD
CY2021	us-gaap	Income Loss From Continuing Operations Before Income Taxes Domestic IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic	-38867000	USD
CY2020	us-gaap	Income Loss From Continuing Operations Before Income Taxes Domestic IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic	-32660000	USD
CY2020	us-gaap	Income Loss From Continuing Operations Before Income Taxes Foreign IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign	-3984000	USD
CY2019	us-gaap	Income Loss From Continuing Operations Before Income Taxes Foreign IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign	-7620000	USD
CY2021	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	-43263000	USD
CY2020	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	-36644000	USD
CY2019	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	38412000	USD
CY2021	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	-13154000	USD
CY2019	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	6085000	USD
CY2021	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	465000	USD
CY2020	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	412000	USD
CY2019	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	2390000	USD
CY2021	us-gaap	Current Foreign Tax Expense Benefit CurrentForeignTaxExpenseBenefit	-239000	USD
CY2020	us-gaap	Current Foreign Tax Expense Benefit CurrentForeignTaxExpenseBenefit	23000	USD
CY2019	us-gaap	Current Foreign Tax Expense Benefit CurrentForeignTaxExpenseBenefit	-97000	USD
CY2021	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	-12928000	USD
CY2020	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	59000	USD
CY2019	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	8378000	USD
CY2021	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	774000	USD
CY2020	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	-5000000	USD
CY2019	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	-528000	USD
CY2021	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	-291000	USD
CY2020	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	-1091000	USD
CY2019	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	451000	USD
CY2021	us-gaap	Deferred Foreign Income Tax Expense Benefit DeferredForeignIncomeTaxExpenseBenefit	406000	USD
CY2020	us-gaap	Deferred Foreign Income Tax Expense Benefit DeferredForeignIncomeTaxExpenseBenefit	2462000	USD
CY2019	us-gaap	Deferred Foreign Income Tax Expense Benefit DeferredForeignIncomeTaxExpenseBenefit	2129000	USD
CY2021	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	889000	USD
CY2020	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-3629000	USD
CY2019	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	2052000	USD
CY2021	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	-12039000	USD
CY2020	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	-3570000	USD
CY2019	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	10430000	USD
CY2021	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	-9085000	USD
CY2020	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	-7695000	USD
CY2019	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	8067000	USD
CY2021	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	-1240000	USD
CY2020	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	-768000	USD
CY2019	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	2288000	USD
CY2021	us-gaap	Income Tax Reconciliation Nondeductible Expense Impairment Losses IncomeTaxReconciliationNondeductibleExpenseImpairmentLosses	0	USD
CY2020	us-gaap	Income Tax Reconciliation Nondeductible Expense Impairment Losses IncomeTaxReconciliationNondeductibleExpenseImpairmentLosses	1813000	USD
CY2019	us-gaap	Income Tax Reconciliation Nondeductible Expense Impairment Losses IncomeTaxReconciliationNondeductibleExpenseImpairmentLosses	0	USD
CY2021	mtrx	Income Tax Reconciliation Charges Without Tax Benefit IncomeTaxReconciliationChargesWithoutTaxBenefit	-961000	USD
CY2020	mtrx	Income Tax Reconciliation Charges Without Tax Benefit IncomeTaxReconciliationChargesWithoutTaxBenefit	-1707000	USD
CY2019	mtrx	Income Tax Reconciliation Charges Without Tax Benefit IncomeTaxReconciliationChargesWithoutTaxBenefit	-1233000	USD
CY2021	us-gaap	Income Tax Reconciliation Change In Deferred Tax Assets Valuation Allowance IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance	2797000	USD
CY2020	us-gaap	Income Tax Reconciliation Change In Deferred Tax Assets Valuation Allowance IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance	3062000	USD
CY2019	us-gaap	Income Tax Reconciliation Change In Deferred Tax Assets Valuation Allowance IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance	4512000	USD
CY2021	mtrx	Reversalofbranchliability Reversalofbranchliability	0	USD
CY2020	mtrx	Reversalofbranchliability Reversalofbranchliability	0	USD
CY2019	mtrx	Reversalofbranchliability Reversalofbranchliability	-3546000	USD
CY2021	mtrx	Effectofnewaccountingstandardcomparedtooldstandard Effectofnewaccountingstandardcomparedtooldstandard	-1826000	USD
CY2020	mtrx	Effectofnewaccountingstandardcomparedtooldstandard Effectofnewaccountingstandardcomparedtooldstandard	-230000	USD
CY2019	mtrx	Effectofnewaccountingstandardcomparedtooldstandard Effectofnewaccountingstandardcomparedtooldstandard	296000	USD
CY2021	us-gaap	Income Tax Reconciliation Tax Credits Research IncomeTaxReconciliationTaxCreditsResearch	1707000	USD
CY2020	us-gaap	Income Tax Reconciliation Tax Credits Research IncomeTaxReconciliationTaxCreditsResearch	1724000	USD
CY2019	us-gaap	Income Tax Reconciliation Tax Credits Research IncomeTaxReconciliationTaxCreditsResearch	1972000	USD
CY2021	us-gaap	Income Tax Reconciliation Foreign Income Tax Rate Differential IncomeTaxReconciliationForeignIncomeTaxRateDifferential	-96000	USD
CY2020	us-gaap	Income Tax Reconciliation Foreign Income Tax Rate Differential IncomeTaxReconciliationForeignIncomeTaxRateDifferential	-132000	USD
CY2019	us-gaap	Income Tax Reconciliation Tax Contingencies Other IncomeTaxReconciliationTaxContingenciesOther	22000	USD
CY2019	us-gaap	Income Tax Reconciliation Foreign Income Tax Rate Differential IncomeTaxReconciliationForeignIncomeTaxRateDifferential	-248000	USD
CY2021	us-gaap	Income Tax Reconciliation Prior Year Income Taxes IncomeTaxReconciliationPriorYearIncomeTaxes	-5223000	USD
CY2020	us-gaap	Income Tax Reconciliation Prior Year Income Taxes IncomeTaxReconciliationPriorYearIncomeTaxes	0	USD
CY2019	us-gaap	Income Tax Reconciliation Prior Year Income Taxes IncomeTaxReconciliationPriorYearIncomeTaxes	0	USD
CY2021	us-gaap	Income Tax Reconciliation Tax Contingencies Other IncomeTaxReconciliationTaxContingenciesOther	-7000	USD
CY2020	us-gaap	Income Tax Reconciliation Tax Contingencies Other IncomeTaxReconciliationTaxContingenciesOther	20000	USD
CY2021	us-gaap	Income Tax Reconciliation Other Adjustments IncomeTaxReconciliationOtherAdjustments	-265000	USD
CY2020	us-gaap	Income Tax Reconciliation Other Adjustments IncomeTaxReconciliationOtherAdjustments	-83000	USD
CY2019	us-gaap	Income Tax Reconciliation Other Adjustments IncomeTaxReconciliationOtherAdjustments	370000	USD
CY2021	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	-12039000	USD
CY2020	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	-3570000	USD
CY2019	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	10430000	USD
CY2021	mtrx	Amount Of Non Deductible Goodwill Impaired AmountOfNonDeductibleGoodwillImpaired	8600000	USD
CY2021Q2	us-gaap	Operating Loss Carryforwards Valuation Allowance OperatingLossCarryforwardsValuationAllowance	1500000	USD
CY2021Q2	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Warranty Reserves DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsWarrantyReserves	206000	USD
CY2020Q2	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Warranty Reserves DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsWarrantyReserves	206000	USD
CY2021Q2	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Allowance For Doubtful Accounts DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAllowanceForDoubtfulAccounts	231000	USD
CY2020Q2	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Allowance For Doubtful Accounts DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAllowanceForDoubtfulAccounts	233000	USD
CY2021Q2	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Compensated Absences DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsCompensatedAbsences	747000	USD
CY2020Q2	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Compensated Absences DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsCompensatedAbsences	669000	USD
CY2021Q2	mtrx	Deferred Tax Assets Insurance Reserve DeferredTaxAssetsInsuranceReserve	1229000	USD
CY2020Q2	mtrx	Deferred Tax Assets Insurance Reserve DeferredTaxAssetsInsuranceReserve	1221000	USD
CY2021Q2	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Legal Settlements DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsLegalSettlements	146000	USD
CY2020Q2	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Legal Settlements DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsLegalSettlements	207000	USD
CY2021Q2	us-gaap	Deferred Tax Assets Tax Credit Carryforwards DeferredTaxAssetsTaxCreditCarryforwards	14966000	USD
CY2020Q2	us-gaap	Deferred Tax Assets Tax Credit Carryforwards DeferredTaxAssetsTaxCreditCarryforwards	10354000	USD
CY2021Q2	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	11104000	USD
CY2020Q2	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	7763000	USD
CY2021Q2	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Pensions DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsPensions	690000	USD
CY2020Q2	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Pensions DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsPensions	1447000	USD
CY2021Q2	us-gaap	Deferred Tax Assets Tax Deferred Expense DeferredTaxAssetsTaxDeferredExpense	27000	USD
CY2020Q2	us-gaap	Deferred Tax Assets Tax Deferred Expense DeferredTaxAssetsTaxDeferredExpense	0	USD
CY2021Q2	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Share Based Compensation Cost DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost	1895000	USD
CY2020Q2	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Share Based Compensation Cost DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost	3231000	USD
CY2021Q2	mtrx	Deferred Tax Assets Accrued Losses DeferredTaxAssetsAccruedLosses	64000	USD
CY2020Q2	mtrx	Deferred Tax Assets Accrued Losses DeferredTaxAssetsAccruedLosses	96000	USD
CY2021Q2	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Restructuring Charges DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsRestructuringCharges	725000	USD
CY2020Q2	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Restructuring Charges DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsRestructuringCharges	1381000	USD
CY2021Q2	us-gaap	Deferred Tax Assets Goodwill And Intangible Assets DeferredTaxAssetsGoodwillAndIntangibleAssets	3765000	USD
CY2020Q2	us-gaap	Deferred Tax Assets Goodwill And Intangible Assets DeferredTaxAssetsGoodwillAndIntangibleAssets	5195000	USD
CY2021Q2	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Employee Compensation DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsEmployeeCompensation	1920000	USD
CY2020Q2	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Employee Compensation DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsEmployeeCompensation	0	USD
CY2021Q2	us-gaap	Deferred Tax Assets Other DeferredTaxAssetsOther	665000	USD
CY2020Q2	us-gaap	Deferred Tax Assets Other DeferredTaxAssetsOther	843000	USD
CY2021Q2	us-gaap	Deferred Tax Assets Net DeferredTaxAssetsNet	16172000	USD
CY2020Q2	us-gaap	Deferred Tax Assets Net DeferredTaxAssetsNet	17320000	USD
CY2021Q2	us-gaap	Deferred Tax Liabilities Property Plant And Equipment DeferredTaxLiabilitiesPropertyPlantAndEquipment	10315000	USD
CY2020Q2	us-gaap	Deferred Tax Liabilities Property Plant And Equipment DeferredTaxLiabilitiesPropertyPlantAndEquipment	11313000	USD
CY2021Q2	mtrx	Future Branch Liability FutureBranchLiability	0	USD
CY2020Q2	mtrx	Future Branch Liability FutureBranchLiability	74000	USD
CY2021Q2	us-gaap	Deferred Tax Liabilities Other DeferredTaxLiabilitiesOther	596000	USD
CY2020Q2	us-gaap	Deferred Tax Liabilities Other DeferredTaxLiabilitiesOther	6000	USD
CY2021Q2	us-gaap	Deferred Income Tax Liabilities DeferredIncomeTaxLiabilities	10911000	USD
CY2020Q2	us-gaap	Deferred Income Tax Liabilities DeferredIncomeTaxLiabilities	11393000	USD
CY2021Q2	us-gaap	Deferred Tax Assets Liabilities Net DeferredTaxAssetsLiabilitiesNet	5261000	USD
CY2020Q2	us-gaap	Deferred Tax Assets Liabilities Net DeferredTaxAssetsLiabilitiesNet	5927000	USD
CY2021Q2	us-gaap	Deferred Income Tax Assets Net DeferredIncomeTaxAssetsNet	5295000	USD
CY2020Q2	us-gaap	Deferred Income Tax Assets Net DeferredIncomeTaxAssetsNet	5988000	USD
CY2021Q2	us-gaap	Deferred Income Tax Liabilities Net DeferredIncomeTaxLiabilitiesNet	34000	USD
CY2020Q2	us-gaap	Deferred Income Tax Liabilities Net DeferredIncomeTaxLiabilitiesNet	61000	USD
CY2021Q2	us-gaap	Deferred Tax Assets Liabilities Net DeferredTaxAssetsLiabilitiesNet	5261000	USD
CY2020Q2	us-gaap	Deferred Tax Assets Liabilities Net DeferredTaxAssetsLiabilitiesNet	5927000	USD
CY2021Q2	us-gaap	Liability For Uncertain Tax Positions Noncurrent LiabilityForUncertainTaxPositionsNoncurrent	300000	USD
CY2021Q2	us-gaap	Unapproved Change Orders Amount UnapprovedChangeOrdersAmount	14600000	USD
CY2020Q2	us-gaap	Unapproved Change Orders Amount UnapprovedChangeOrdersAmount	14500000	USD
CY2021	us-gaap	Loss Contingency Related Receivable Carrying Value Period Increase Decrease LossContingencyRelatedReceivableCarryingValuePeriodIncreaseDecrease	-2900000	USD
CY2021	us-gaap	Loss Contingency Receivable Proceeds LossContingencyReceivableProceeds	8900000	USD
CY2021Q2	us-gaap	Contracts Receivable Claims And Uncertain Amounts ContractsReceivableClaimsAndUncertainAmounts	17000000	USD
CY2021Q2	mtrx	Percentage Of Real Estate Leases PercentageOfRealEstateLeases	0.94
CY2021Q2	us-gaap	Lessee Operating Lease Term Of Contract LesseeOperatingLeaseTermOfContract	P15Y
CY2021	us-gaap	Operating Lease Impairment Loss OperatingLeaseImpairmentLoss	500000	USD
CY2021	us-gaap	Operating Lease Cost OperatingLeaseCost	8386000	USD
CY2020	us-gaap	Operating Lease Cost OperatingLeaseCost	12274000	USD
CY2021	us-gaap	Short Term Lease Cost ShortTermLeaseCost	25912000	USD
CY2020	us-gaap	Short Term Lease Cost ShortTermLeaseCost	37371000	USD
CY2021	us-gaap	Lease Cost LeaseCost	34298000	USD
CY2020	us-gaap	Lease Cost LeaseCost	49645000	USD
CY2021Q2	us-gaap	Lessee Operating Lease Liability Payments Due Next Twelve Months LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths	6548000	USD
CY2021Q2	us-gaap	Lessee Operating Lease Liability Payments Due Year Two LesseeOperatingLeaseLiabilityPaymentsDueYearTwo	4684000	USD
CY2021Q2	us-gaap	Lessee Operating Lease Liability Payments Due Year Three LesseeOperatingLeaseLiabilityPaymentsDueYearThree	3600000	USD
CY2021Q2	us-gaap	Lessee Operating Lease Liability Payments Due Year Four LesseeOperatingLeaseLiabilityPaymentsDueYearFour	3143000	USD
CY2021Q2	us-gaap	Lessee Operating Lease Liability Payments Due Year Five LesseeOperatingLeaseLiabilityPaymentsDueYearFive	2866000	USD
CY2021Q2	us-gaap	Lessee Operating Lease Liability Payments Due After Year Five LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive	11224000	USD
CY2021Q2	us-gaap	Lessee Operating Lease Liability Payments Due LesseeOperatingLeaseLiabilityPaymentsDue	32065000	USD
CY2021Q2	us-gaap	Lessee Operating Lease Liability Undiscounted Excess Amount LesseeOperatingLeaseLiabilityUndiscountedExcessAmount	-5547000	USD
CY2021Q2	us-gaap	Operating Lease Liability OperatingLeaseLiability	26518000	USD
CY2021Q2	us-gaap	Operating Lease Liability Current OperatingLeaseLiabilityCurrent	5747000	USD
CY2021Q2	us-gaap	Operating Lease Liability Noncurrent OperatingLeaseLiabilityNoncurrent	20771000	USD
CY2021Q2	us-gaap	Operating Lease Weighted Average Remaining Lease Term1 OperatingLeaseWeightedAverageRemainingLeaseTerm1	P7Y3M18D
CY2021Q2	us-gaap	Operating Lease Weighted Average Discount Rate Percent OperatingLeaseWeightedAverageDiscountRatePercent	0.053
CY2021	us-gaap	Operating Lease Payments OperatingLeasePayments	9922000	USD
CY2021	us-gaap	Right Of Use Asset Obtained In Exchange For Operating Lease Liability RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability	8342000	USD
CY2021Q2	us-gaap	Preferred Stock Shares Authorized PreferredStockSharesAuthorized	5000000	shares
CY2021	us-gaap	Line Of Credit Facility Dividend Restrictions LineOfCreditFacilityDividendRestrictions	2.5 million
CY2021Q2	us-gaap	Stock Repurchase Program Number Of Shares Authorized To Be Repurchased StockRepurchaseProgramNumberOfSharesAuthorizedToBeRepurchased	2707175	shares
CY2021Q2	us-gaap	Stock Repurchase Program Remaining Number Of Shares Authorized To Be Repurchased StockRepurchaseProgramRemainingNumberOfSharesAuthorizedToBeRepurchased	1349037	shares
CY2021	us-gaap	Shares Paid For Tax Withholding For Share Based Compensation SharesPaidForTaxWithholdingForShareBasedCompensation	170629	shares
CY2020	us-gaap	Shares Paid For Tax Withholding For Share Based Compensation SharesPaidForTaxWithholdingForShareBasedCompensation	181081	shares
CY2021Q2	us-gaap	Treasury Stock Shares TreasuryStockShares	1338779	shares
CY2021	us-gaap	Share Based Compensation ShareBasedCompensation	8200000	USD
CY2020	us-gaap	Share Based Compensation ShareBasedCompensation	9900000	USD
CY2019	us-gaap	Share Based Compensation ShareBasedCompensation	11900000	USD
CY2021Q2	us-gaap	Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized	8600000	USD
CY2021	us-gaap	Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized Period For Recognition1 EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition1	P1Y7M6D
CY2021	us-gaap	Effective Income Tax Rate Reconciliation Share Based Compensation Excess Tax Benefit Amount EffectiveIncomeTaxRateReconciliationShareBasedCompensationExcessTaxBenefitAmount	1800000	USD
CY2020	us-gaap	Effective Income Tax Rate Reconciliation Share Based Compensation Excess Tax Benefit Amount EffectiveIncomeTaxRateReconciliationShareBasedCompensationExcessTaxBenefitAmount	200000	USD
CY2021Q2	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Number Of Shares Authorized ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized	1725000	shares
CY2021Q2	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Number Of Shares Available For Grant ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant	1769487	shares
CY2021	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Expiration Period SharebasedCompensationArrangementBySharebasedPaymentAwardExpirationPeriod	P10Y
CY2020Q2	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	53700	shares
CY2020	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Outstanding Weighted Average Remaining Contractual Term2 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm2	P1Y4M24D
CY2020Q2	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	10.19
CY2020Q2	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue	0	USD
CY2021	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Gross ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross	0	shares
CY2021	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Grants In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice	0
CY2021	us-gaap	Stock Issued During Period Shares Stock Options Exercised StockIssuedDuringPeriodSharesStockOptionsExercised	34150	shares
CY2021	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Exercises In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice	10.19
CY2021	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercises In Period Total Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue	82000	USD
CY2021	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Expirations In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExpirationsInPeriod	0	shares
CY2021	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Expirations In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExpirationsInPeriodWeightedAverageExercisePrice	0
CY2021Q2	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	19550	shares
CY2021	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Outstanding Weighted Average Remaining Contractual Term2 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm2	P0Y4M24D
CY2021	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Vested And Expected To Vest Outstanding Weighted Average Remaining Contractual Term1 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingWeightedAverageRemainingContractualTerm1	P0Y4M24D
CY2021Q2	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Vested And Expected To Vest Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingWeightedAverageExercisePrice	10.19
CY2021Q2	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	10.19
CY2021Q2	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue	6000	USD
CY2021Q2	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Vested And Expected To Vest Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingNumber	19550	shares
CY2021Q2	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Vested And Expected To Vest Outstanding Aggregate Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingAggregateIntrinsicValue	6000	USD
CY2021Q2	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercisable Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber	19550	shares
CY2021	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Exercisable Weighted Average Remaining Contractual Term1 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableWeightedAverageRemainingContractualTerm1	P0Y4M24D
CY2021Q2	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercisable Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice	10.19
CY2021Q2	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Exercisable Intrinsic Value1 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableIntrinsicValue1	6000	USD
CY2019	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercises In Period Total Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue	100000	USD
CY2021Q2	mtrx	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Method Numberof Simulations Used ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueMethodNumberofSimulationsUsed	100000	shares
CY2020Q2	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Nonvested Number ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber	1234918	shares
CY2020Q2	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Nonvested Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue	20.89
CY2021	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Grants In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod	665597	shares
CY2021	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Grants In Period Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue	10.60
CY2021	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Non Option Equity Instruments Other Description ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsOtherDescription	15,314
CY2021	mtrx	Performance Shares Earned In Excess Of Target Amount PerformanceSharesEarnedInExcessOfTargetAmount	0	USD
CY2021	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Vested In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod	515218	shares
CY2021	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Vested In Period Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue	16.99
CY2021	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Forfeited In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod	119904	shares
CY2021	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Forfeitures Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue	20.67
CY2021Q2	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Nonvested Number ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber	1280707	shares
CY2021Q2	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Nonvested Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue	17.07
CY2020	mtrx	Share Based Compensation Arrangement By Share Based Payment Award Deferred Grants In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardDeferredGrantsInPeriod	490322	shares
CY2019	mtrx	Share Based Compensation Arrangement By Share Based Payment Award Deferred Grants In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardDeferredGrantsInPeriod	602148	shares
CY2020	mtrx	Share Based Compensation Arrangement By Share Based Payment Award Deferred Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardDeferredWeightedAverageGrantDateFairValue	21.79
CY2019	mtrx	Share Based Compensation Arrangement By Share Based Payment Award Deferred Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardDeferredWeightedAverageGrantDateFairValue	25.10
CY2020	mtrx	Share Based Compensation Arrangement By Share Based Payment Award Deferred Shares Vested And Released ShareBasedCompensationArrangementByShareBasedPaymentAwardDeferredSharesVestedAndReleased	542279	shares
CY2019	mtrx	Share Based Compensation Arrangement By Share Based Payment Award Deferred Shares Vested And Released ShareBasedCompensationArrangementByShareBasedPaymentAwardDeferredSharesVestedAndReleased	314711	shares
CY2021Q2	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Equity Instruments Other Than Options Aggregate Intrinsic Value Outstanding SharebasedCompensationArrangementBySharebasedPaymentAwardEquityInstrumentsOtherThanOptionsAggregateIntrinsicValueOutstanding	1000000	USD
CY2020Q2	mtrx	Share Based Compensation Arrangement By Share Based Payment Award Deferred Shares Vested And Released Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardDeferredSharesVestedAndReleasedWeightedAverageGrantDateFairValue	19.43
CY2019Q2	mtrx	Share Based Compensation Arrangement By Share Based Payment Award Deferred Shares Vested And Released Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardDeferredSharesVestedAndReleasedWeightedAverageGrantDateFairValue	16.23
CY2021	us-gaap	Restricted Stock Shares Issued Net Of Shares For Tax Withholdings RestrictedStockSharesIssuedNetOfSharesForTaxWithholdings	238848	shares
CY2021	us-gaap	Stock Issued During Period Value Restricted Stock Award Gross StockIssuedDuringPeriodValueRestrictedStockAwardGross	2300000	USD
CY2021	us-gaap	Restricted Stock Expense RestrictedStockExpense	1000000	USD
CY2021	us-gaap	Net Income Loss NetIncomeLoss	-31224000	USD
CY2020	us-gaap	Net Income Loss NetIncomeLoss	-33074000	USD
CY2019	us-gaap	Net Income Loss NetIncomeLoss	27982000	USD
CY2021	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	26451000	shares
CY2020	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	26621000	shares
CY2019	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	26891000	shares
CY2021	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-1.18
CY2020	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-1.24
CY2019	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.04
CY2021	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	26451000	shares
CY2020	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	26621000	shares
CY2019	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	26891000	shares
CY2021	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	0	shares
CY2020	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	0	shares
CY2019	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	28000	shares
CY2021	us-gaap	Incremental Common Shares Attributable To Nonvested Shares With Forfeitable Dividends IncrementalCommonSharesAttributableToNonvestedSharesWithForfeitableDividends	0	shares
CY2020	us-gaap	Incremental Common Shares Attributable To Nonvested Shares With Forfeitable Dividends IncrementalCommonSharesAttributableToNonvestedSharesWithForfeitableDividends	0	shares
CY2019	us-gaap	Incremental Common Shares Attributable To Nonvested Shares With Forfeitable Dividends IncrementalCommonSharesAttributableToNonvestedSharesWithForfeitableDividends	668000	shares
CY2021	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	26451000	shares
CY2020	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	26621000	shares
CY2019	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	27587000	shares
CY2021	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-1.18
CY2020	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-1.24
CY2019	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.01
CY2020	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	681000	shares
CY2019	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	160000	shares
CY2021	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	402000	shares
CY2021	mtrx	Defined Contribution Plan Maximum Annual Contribution By Employee Percent DefinedContributionPlanMaximumAnnualContributionByEmployeePercent	0.25
CY2021	us-gaap	Defined Contribution Plan Employer Matching Contribution Percent DefinedContributionPlanEmployerMatchingContributionPercent	1
CY2021	mtrx	Percentage Of Employee Contribution As Base For Employer Contributions PercentageOfEmployeeContributionAsBaseForEmployerContributions	0.03
CY2021	mtrx	Defined Contribution Plan Employer Matching Contribution Percent For Two Percent Of Employee Contribution DefinedContributionPlanEmployerMatchingContributionPercentForTwoPercentOfEmployeeContribution	0.50
CY2021	mtrx	Percentage Of Employee Contribution As Base For Employer Contribution To Match PercentageOfEmployeeContributionAsBaseForEmployerContributionToMatch	0.02
CY2021	us-gaap	Defined Contribution Plan Cost Recognized DefinedContributionPlanCostRecognized	5400000	USD
CY2020	us-gaap	Defined Contribution Plan Cost Recognized DefinedContributionPlanCostRecognized	6200000	USD
CY2021Q2	mtrx	Number Of Unions Contributed To NumberOfUnionsContributedTo	90
CY2021	us-gaap	Multiemployer Plan Pension Insignificant Employer Contribution Cost MultiemployerPlanPensionInsignificantEmployerContributionCost	3653000	USD
CY2021	us-gaap	Multiemployer Plan Pension Insignificant Employer Contribution Cost MultiemployerPlanPensionInsignificantEmployerContributionCost	3653000	USD
CY2021	us-gaap	Multiemployer Plan Pension Insignificant Employer Contribution Cost MultiemployerPlanPensionInsignificantEmployerContributionCost	3653000	USD
CY2020	us-gaap	Multiemployer Plan Pension Insignificant Employer Contribution Cost MultiemployerPlanPensionInsignificantEmployerContributionCost	8000000	USD
CY2019	us-gaap	Multiemployer Plan Pension Insignificant Employer Contribution Cost MultiemployerPlanPensionInsignificantEmployerContributionCost	13703000	USD
CY2021	us-gaap	Multiemployer Plan Employer Contribution Cost MultiemployerPlanEmployerContributionCost	15369000	USD
CY2020	us-gaap	Multiemployer Plan Employer Contribution Cost MultiemployerPlanEmployerContributionCost	37403000	USD
CY2019	us-gaap	Multiemployer Plan Employer Contribution Cost MultiemployerPlanEmployerContributionCost	64386000	USD
CY2021	mtrx	Employee Stock Purchase Plan Maximum Annual Share Purchase Limited To Aggregate Market Value EmployeeStockPurchasePlanMaximumAnnualSharePurchaseLimitedToAggregateMarketValue	60000	USD
CY2021	mtrx	Employee Stock Purchase Plan Maximum Number Of Shares Available For Issuance EmployeeStockPurchasePlanMaximumNumberOfSharesAvailableForIssuance	1000000	shares
CY2021	us-gaap	Stock Issued During Period Shares Employee Stock Purchase Plans StockIssuedDuringPeriodSharesEmployeeStockPurchasePlans	29171	shares
CY2020	us-gaap	Stock Issued During Period Shares Employee Stock Purchase Plans StockIssuedDuringPeriodSharesEmployeeStockPurchasePlans	20733	shares
CY2019	us-gaap	Stock Issued During Period Shares Employee Stock Purchase Plans StockIssuedDuringPeriodSharesEmployeeStockPurchasePlans	15812	shares
CY2021	mtrx	Grossrevenues Grossrevenues	679506000	USD
CY2021	us-gaap	Revenues Revenues	673398000	USD
CY2021	us-gaap	Gross Profit GrossProfit	32765000	USD
CY2021	us-gaap	Selling General And Administrative Expense SellingGeneralAndAdministrativeExpense	69756000	USD
CY2021	us-gaap	Restructuring Settlement And Impairment Provisions RestructuringSettlementAndImpairmentProvisions	6756000	USD
CY2021	us-gaap	Operating Income Loss OperatingIncomeLoss	-43747000	USD
CY2021Q2	us-gaap	Assets Assets	467556000	USD
CY2021	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	4354000	USD
CY2021	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	17858000	USD
CY2020	mtrx	Grossrevenues Grossrevenues	1107582000	USD
CY2020	us-gaap	Revenues Revenues	1100938000	USD
CY2020	us-gaap	Gross Profit GrossProfit	102176000	USD
CY2020	us-gaap	Selling General And Administrative Expense SellingGeneralAndAdministrativeExpense	86276000	USD
CY2020	us-gaap	Restructuring Settlement And Impairment Provisions RestructuringSettlementAndImpairmentProvisions	52525000	USD
CY2020	us-gaap	Operating Income Loss OperatingIncomeLoss	-36625000	USD
CY2020Q2	us-gaap	Assets Assets	517310000	USD
CY2020	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	18539000	USD
CY2020	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	19124000	USD
CY2019	mtrx	Grossrevenues Grossrevenues	1420952000	USD
CY2019	us-gaap	Revenues Revenues	1416680000	USD
CY2019	us-gaap	Gross Profit GrossProfit	131951000	USD
CY2019	us-gaap	Selling General And Administrative Expense SellingGeneralAndAdministrativeExpense	94021000	USD
CY2019	us-gaap	Operating Income Loss OperatingIncomeLoss	37930000	USD
CY2019Q2	us-gaap	Assets Assets	633394000	USD
CY2019	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	19558000	USD
CY2019	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	18224000	USD
CY2021Q2	us-gaap	Noncurrent Assets NoncurrentAssets	176337000	USD
CY2020Q2	us-gaap	Noncurrent Assets NoncurrentAssets	182150000	USD
CY2019Q2	us-gaap	Noncurrent Assets NoncurrentAssets	216084000	USD
CY2021	us-gaap	Restructuring Charges RestructuringCharges	6756000	USD
	us-gaap	Restructuring Charges RestructuringCharges	20766000	USD
CY2021	us-gaap	Severance Costs1 SeveranceCosts1	5545000	USD
	us-gaap	Severance Costs1 SeveranceCosts1	14318000	USD
CY2021	us-gaap	Business Exit Costs1 BusinessExitCosts1	785000	USD
	us-gaap	Business Exit Costs1 BusinessExitCosts1	4497000	USD
CY2021	us-gaap	Impairment Of Intangible Assets Indefinitelived Excluding Goodwill ImpairmentOfIntangibleAssetsIndefinitelivedExcludingGoodwill	0	USD
	us-gaap	Impairment Of Intangible Assets Indefinitelived Excluding Goodwill ImpairmentOfIntangibleAssetsIndefinitelivedExcludingGoodwill	1525000	USD
CY2021	us-gaap	Other Restructuring Costs OtherRestructuringCosts	426000	USD
	us-gaap	Other Restructuring Costs OtherRestructuringCosts	426000	USD
CY2021	us-gaap	Restructuring Charges RestructuringCharges	6756000	USD
	us-gaap	Restructuring Charges RestructuringCharges	20766000	USD
CY2020Q2	us-gaap	Restructuring Reserve RestructuringReserve	2403000	USD
CY2021	mtrx	Current Year Outstanding Restructuring Costs Incurred CurrentYearOutstandingRestructuringCostsIncurred	4026000	USD
CY2021	us-gaap	Payments For Restructuring PaymentsForRestructuring	3484000	USD
CY2021	mtrx	Adjustment To Restructuring Reserve AdjustmentToRestructuringReserve	-510000	USD
CY2021Q2	us-gaap	Restructuring Reserve RestructuringReserve	2435000	USD
CY2020Q3	us-gaap	Revenues Revenues	182771000	USD
CY2020Q4	us-gaap	Revenues Revenues	167468000	USD
CY2021Q1	us-gaap	Revenues Revenues	148260000	USD
CY2021Q2	us-gaap	Revenues Revenues	174899000	USD
CY2020Q3	us-gaap	Gross Profit GrossProfit	14350000	USD
CY2020Q4	us-gaap	Gross Profit GrossProfit	15313000	USD
CY2021Q1	us-gaap	Gross Profit GrossProfit	1560000	USD
CY2021Q2	us-gaap	Gross Profit GrossProfit	1542000	USD
CY2020Q3	us-gaap	Restructuring Settlement And Impairment Provisions RestructuringSettlementAndImpairmentProvisions	-320000	USD
CY2020Q4	us-gaap	Restructuring Settlement And Impairment Provisions RestructuringSettlementAndImpairmentProvisions	5045000	USD
CY2021Q1	us-gaap	Restructuring Settlement And Impairment Provisions RestructuringSettlementAndImpairmentProvisions	1860000	USD
CY2021Q2	us-gaap	Restructuring Settlement And Impairment Provisions RestructuringSettlementAndImpairmentProvisions	171000	USD
CY2020Q3	us-gaap	Operating Income Loss OperatingIncomeLoss	-3458000	USD
CY2020Q4	us-gaap	Operating Income Loss OperatingIncomeLoss	-6456000	USD
CY2021Q1	us-gaap	Operating Income Loss OperatingIncomeLoss	-17479000	USD
CY2021Q2	us-gaap	Operating Income Loss OperatingIncomeLoss	-16354000	USD
CY2020Q3	us-gaap	Net Income Loss NetIncomeLoss	-3037000	USD
CY2020Q4	us-gaap	Net Income Loss NetIncomeLoss	-4591000	USD
CY2021Q1	us-gaap	Net Income Loss NetIncomeLoss	-12873000	USD
CY2021Q2	us-gaap	Net Income Loss NetIncomeLoss	-10723000	USD
CY2020Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-0.12
CY2020Q4	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-0.17
CY2021Q1	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-0.49
CY2021Q2	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-0.40
CY2020Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-0.12
CY2020Q4	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-0.17
CY2021Q1	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-0.49
CY2021Q2	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-0.40
CY2019Q3	us-gaap	Revenues Revenues	338097000	USD
CY2019Q4	us-gaap	Revenues Revenues	318677000	USD
CY2020Q1	us-gaap	Revenues Revenues	248327000	USD
CY2020Q2	us-gaap	Revenues Revenues	195837000	USD
CY2019Q3	us-gaap	Gross Profit GrossProfit	32465000	USD
CY2019Q4	us-gaap	Gross Profit GrossProfit	30001000	USD
CY2020Q1	us-gaap	Gross Profit GrossProfit	20477000	USD
CY2020Q2	us-gaap	Gross Profit GrossProfit	19233000	USD
CY2020Q3	us-gaap	Restructuring Settlement And Impairment Provisions RestructuringSettlementAndImpairmentProvisions	0	USD
CY2019Q4	us-gaap	Restructuring Settlement And Impairment Provisions RestructuringSettlementAndImpairmentProvisions	38515000	USD
CY2020Q1	us-gaap	Restructuring Settlement And Impairment Provisions RestructuringSettlementAndImpairmentProvisions	6559000	USD
CY2020Q2	us-gaap	Restructuring Settlement And Impairment Provisions RestructuringSettlementAndImpairmentProvisions	7451000	USD
CY2019Q3	us-gaap	Operating Income Loss OperatingIncomeLoss	8774000	USD
CY2019Q4	us-gaap	Operating Income Loss OperatingIncomeLoss	-31679000	USD
CY2020Q1	us-gaap	Operating Income Loss OperatingIncomeLoss	-5800000	USD
CY2020Q2	us-gaap	Operating Income Loss OperatingIncomeLoss	-7920000	USD
CY2019Q3	us-gaap	Net Income Loss NetIncomeLoss	6151000	USD
CY2019Q4	us-gaap	Net Income Loss NetIncomeLoss	-28008000	USD
CY2020Q1	us-gaap	Net Income Loss NetIncomeLoss	-5495000	USD
CY2020Q2	us-gaap	Net Income Loss NetIncomeLoss	-5722000	USD
CY2019Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.23
CY2019Q4	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-1.04
CY2020Q1	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-0.21
CY2020Q2	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-0.22
CY2019Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.22
CY2019Q4	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-1.04
CY2020Q1	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-0.21
CY2020Q2	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-0.22
CY2020Q2	us-gaap	Valuation Allowances And Reserves Balance ValuationAllowancesAndReservesBalance	8668000	USD
CY2021	us-gaap	Valuation Allowances And Reserves Charged To Cost And Expense ValuationAllowancesAndReservesChargedToCostAndExpense	2882000	USD
CY2021	us-gaap	Valuation Allowances And Reserves Charged To Other Accounts ValuationAllowancesAndReservesChargedToOtherAccounts	0	USD
CY2021	us-gaap	Valuation Allowances And Reserves Deductions ValuationAllowancesAndReservesDeductions	-452000	USD
CY2021Q2	us-gaap	Valuation Allowances And Reserves Balance ValuationAllowancesAndReservesBalance	12002000	USD
CY2019Q2	us-gaap	Valuation Allowances And Reserves Balance ValuationAllowancesAndReservesBalance	5882000	USD
CY2020	us-gaap	Valuation Allowances And Reserves Charged To Cost And Expense ValuationAllowancesAndReservesChargedToCostAndExpense	4220000	USD
CY2020	us-gaap	Valuation Allowances And Reserves Charged To Other Accounts ValuationAllowancesAndReservesChargedToOtherAccounts	0	USD
CY2020	us-gaap	Valuation Allowances And Reserves Deductions ValuationAllowancesAndReservesDeductions	1434000	USD
CY2020Q2	us-gaap	Valuation Allowances And Reserves Balance ValuationAllowancesAndReservesBalance	8668000	USD
CY2018Q2	us-gaap	Valuation Allowances And Reserves Balance ValuationAllowancesAndReservesBalance	7965000	USD
CY2019	us-gaap	Valuation Allowances And Reserves Charged To Cost And Expense ValuationAllowancesAndReservesChargedToCostAndExpense	4599000	USD
CY2019	us-gaap	Valuation Allowances And Reserves Charged To Other Accounts ValuationAllowancesAndReservesChargedToOtherAccounts	0	USD
CY2019	us-gaap	Valuation Allowances And Reserves Deductions ValuationAllowancesAndReservesDeductions	6682000	USD
CY2019Q2	us-gaap	Valuation Allowances And Reserves Balance ValuationAllowancesAndReservesBalance	5882000	USD

Files In Submission

Name	View Source	Status
0000866273-21-000088-index-headers.html	Edgar Link	pending
0000866273-21-000088-index.html	Edgar Link	pending
0000866273-21-000088.txt	Edgar Link	pending
0000866273-21-000088-xbrl.zip	Edgar Link	pending
exhibit1016-formoflongxter.htm	Edgar Link	pending
exhibit1017-formofrestrict.htm	Edgar Link	pending
exhibit1019-creditagreemen.htm	Edgar Link	pending
exhibit1020-matrixservicec.htm	Edgar Link	pending
exhibit1020tableofcontents.jpg	Edgar Link	pending
exhibit21-mtrxx2021x06x30x.htm	Edgar Link	pending
exhibit23-mtrxx2021x06x30x.htm	Edgar Link	pending
exhibit311-mtrxx2021x06x30x.htm	Edgar Link	pending
exhibit312-mtrxx202106x30x.htm	Edgar Link	pending
exhibit321-mtrxx2021x06x30x.htm	Edgar Link	pending
exhibit322-mtrxx2021x06x30x.htm	Edgar Link	pending
exhibit95-mtrxx2021x06x30x.htm	Edgar Link	pending
FilingSummary.xml	Edgar Link	unprocessable
Financial_Report.xlsx	Edgar Link	pending
MetaLinks.json	Edgar Link	pending
mtrx-20210630.htm	Edgar Link	pending
mtrx-20210630.xsd	Edgar Link	pending
mtrx-20210630_cal.xml	Edgar Link	unprocessable
mtrx-20210630_def.xml	Edgar Link	unprocessable
mtrx-20210630_g1.jpg	Edgar Link	pending
mtrx-20210630_htm.xml	Edgar Link	completed
mtrx-20210630_lab.xml	Edgar Link	unprocessable
mtrx-20210630_pre.xml	Edgar Link	unprocessable
R1.htm	Edgar Link	pending
R10.htm	Edgar Link	pending
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R73.htm	Edgar Link	pending
R8.htm	Edgar Link	pending
R9.htm	Edgar Link	pending
report.css	Edgar Link	pending
Show.js	Edgar Link	pending

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$MTRX
MATRIX SERVICE CO Stock $mtrx

2021 Q2 Form 10-K Financial Statement

#000086627321000088 Filed on September 13, 2021

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$MTRX MATRIX SERVICE CO Stock $mtrx

2021 Q2 Form 10-K Financial Statement

#000086627321000088 Filed on September 13, 2021

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$MTRX
MATRIX SERVICE CO Stock $mtrx