$MTRX
MATRIX SERVICE CO Stock $mtrx

$mtrx Overview Financials Valuation SEC Filings Company Website

2020 Form 10-K Financial Statement

#000086627320000109 Filed on September 03, 2020

Income Statement

Concept	2020	2019 Q2	2019 Q1
Revenue	$1.101B	$398.7M	$358.9M
YoY Change	-22.29%	36.04%	46.1%
Cost Of Revenue	$998.8M	$355.0M	$322.0M
YoY Change	-22.26%	30.71%	39.53%
Gross Profit	$102.2M	$43.74M	$36.91M
YoY Change	-22.57%	103.9%	147.84%
Gross Profit Margin	9.28%	10.97%	10.28%
Selling, General & Admin	$86.28M	$26.30M	$24.11M
YoY Change	-8.24%	27.67%	16.19%
% of Gross Profit	84.44%	60.13%	65.33%
Research & Development
YoY Change
% of Gross Profit
Depreciation & Amortization	$19.12M	$4.600M	$4.490M
YoY Change	4.94%	-4.17%	-3.23%
% of Gross Profit	18.72%	10.52%	12.17%
Operating Expenses	$86.28M	$26.30M	$24.11M
YoY Change	-8.24%	27.67%	16.19%
Operating Profit	-$36.63M	$17.39M	$12.79M
YoY Change	-196.56%	-201.62%	-318.25%
Interest Expense	$1.597M	$0.00	$301.0K
YoY Change	23.23%	-100.0%	-53.19%
% of Operating Profit		0.0%	2.35%
Other Income/Expense, Net	$308.0K	$0.00	$58.00K
YoY Change	-49.59%	-100.0%	-84.32%
Pretax Income	-$36.64M	$17.40M	$12.86M
YoY Change	-195.4%	-200.58%	-314.12%
Income Tax	-$3.570M	$4.600M	$3.925M
% Of Pretax Income		26.44%	30.53%
Net Earnings	-$33.07M	$12.81M	$8.933M
YoY Change	-218.2%	-187.26%	-273.36%
Net Earnings / Revenue	-3.0%	3.21%	2.49%
Basic Earnings Per Share	-$1.24	$0.48	$0.33
Diluted Earnings Per Share	-$1.24	$0.47	$0.33
COMMON SHARES
Basic Shares Outstanding	26.62M shares	26.81M shares	26.79M shares
Diluted Shares Outstanding	26.62M shares		27.42M shares

Balance Sheet

Concept	2020	2019 Q2	2019 Q1
SHORT-TERM ASSETS
Cash & Short-Term Investments	$100.0M	$89.70M	$49.70M
YoY Change	11.48%	39.94%	5.97%
Cash & Equivalents	$100.0M	$89.72M	$49.68M
Short-Term Investments
Other Short-Term Assets	$4.500M	$5.034M	$6.171M
YoY Change	-10.0%	12.92%	-9.41%
Inventory	$6.500M	$8.017M	$8.637M
Prepaid Expenses
Receivables	$220.2M	$218.4M	$274.9M
Other Receivables	$3.900M	$0.00	$400.0K
Total Short-Term Assets	$335.2M	$417.3M	$415.2M
YoY Change	-19.67%	16.88%	29.43%
LONG-TERM ASSETS
Property, Plant & Equipment	$102.1M	$79.34M	$75.81M
YoY Change	28.75%	9.21%	1.93%
Goodwill		$93.37M	$93.32M
YoY Change		-2.91%	-17.87%
Intangibles		$19.47M	$20.28M
YoY Change		-14.65%	-17.01%
Long-Term Investments
YoY Change
Other Assets	$10.80M	$21.23M	$20.62M
YoY Change	-54.81%	369.81%	892.97%
Total Long-Term Assets	$182.1M	$216.1M	$216.2M
YoY Change	-15.73%	7.51%	-1.02%
TOTAL ASSETS
Total Short-Term Assets	$335.2M	$417.3M	$415.2M
Total Long-Term Assets	$182.1M	$216.1M	$216.2M
Total Assets	$517.3M	$633.4M	$631.4M
YoY Change	-18.33%	13.5%	17.1%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable	$73.10M	$114.6M	$110.5M
YoY Change	-36.21%	44.32%	63.45%
Accrued Expenses	$39.00M	$52.70M	$55.90M
YoY Change	-26.0%	37.6%	46.34%
Deferred Revenue		$105.6M	-$122.2M
YoY Change		-187.48%
Short-Term Debt	$0.00	$0.00	$0.00
YoY Change
Long-Term Debt Due
YoY Change
Total Short-Term Liabilities	$175.9M	$275.5M	$289.5M
YoY Change	-36.15%	15.53%	48.93%
LONG-TERM LIABILITIES
Long-Term Debt	$9.200M	$5.347M	$2.172M
YoY Change	73.58%		-76.66%
Other Long-Term Liabilities	$24.20M	$293.0K	$200.0K
YoY Change	7966.67%	-2.33%	-33.33%
Total Long-Term Liabilities	$33.40M	$5.640M	$2.172M
YoY Change	496.43%		-76.66%
TOTAL LIABILITIES
Total Short-Term Liabilities	$175.9M	$275.5M	$289.5M
Total Long-Term Liabilities	$33.40M	$5.640M	$2.172M
Total Liabilities	$209.4M	$281.4M	$295.3M
YoY Change	-25.59%	17.66%	42.46%
SHAREHOLDERS EQUITY
Retained Earnings		$239.5M	$226.7M
YoY Change		13.23%	0.22%
Common Stock		$279.0K	$279.0K
YoY Change		0.0%	0.0%
Preferred Stock
YoY Change
Treasury Stock (at cost)		$17.76M	$17.82M
YoY Change		0.24%	-2.96%
Treasury Stock Shares		1.081M shares	1.085M shares
Shareholders Equity	$307.9M	$352.0M	$336.1M
YoY Change
Total Liabilities & Shareholders Equity	$517.3M	$633.4M	$631.4M
YoY Change	-18.33%	13.5%	17.1%

Cashflow Statement

Concept	2020	2019 Q2	2019 Q1
OPERATING ACTIVITIES
Net Income	-$33.07M	$12.81M	$8.933M
YoY Change	-218.2%	-187.26%	-273.36%
Depreciation, Depletion And Amortization	$19.12M	$4.600M	$4.490M
YoY Change	4.94%	-4.17%	-3.23%
Cash From Operating Activities	$44.09M	$42.51M	-$14.60M
YoY Change	6.5%	47.76%	-189.46%
INVESTING ACTIVITIES
Capital Expenditures	$18.54M	-$5.840M	-$7.660M
YoY Change	-5.21%	128.12%	264.76%
Acquisitions	$0.00
YoY Change
Other Investing Activities	$1.420M	$170.0K	$130.0K
YoY Change	-72.21%	-15.0%	-70.45%
Cash From Investing Activities	-$17.12M	-$5.670M	-$7.530M
YoY Change	18.47%	140.25%	353.61%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net	$17.05M
YoY Change	228.42%
Debt Paid & Issued, Net
YoY Change
Cash From Financing Activities	-$16.04M	3.110M	240.0K
YoY Change	1348.87%	-134.56%	-100.58%
NET CHANGE
Cash From Operating Activities	$44.09M	42.51M	-14.60M
Cash From Investing Activities	-$17.12M	-5.670M	-7.530M
Cash From Financing Activities	-$16.04M	3.110M	240.0K
Net Change In Cash	$10.32M	39.95M	-21.89M
YoY Change	-59.77%	129.47%	-19.05%
FREE CASH FLOW
Cash From Operating Activities	$44.09M	$42.51M	-$14.60M
Capital Expenditures	$18.54M	-$5.840M	-$7.660M
Free Cash Flow	$25.55M	$48.35M	-$6.940M
YoY Change	16.99%	54.32%	-137.68%

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value	Unit
CY2018	mtrx	Other Treasury Shares Acquired OtherTreasurySharesAcquired	52950	shares
CY2020	dei	Entity Central Index Key EntityCentralIndexKey	0000866273
CY2020	dei	Current Fiscal Year End Date CurrentFiscalYearEndDate	--06-30
CY2020	dei	Document Fiscal Year Focus DocumentFiscalYearFocus	2020
CY2020	dei	Document Fiscal Period Focus DocumentFiscalPeriodFocus	FY
CY2020	dei	Amendment Flag AmendmentFlag	false
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
CY2018	us-gaap	Other Comprehensive Income Loss Foreign Currency Translation Adjustment Tax OtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentTax	-24000	USD
CY2020Q2	us-gaap	Allowance For Doubtful Accounts Receivable Current AllowanceForDoubtfulAccountsReceivableCurrent	905000	USD
CY2019Q2	us-gaap	Allowance For Doubtful Accounts Receivable Current AllowanceForDoubtfulAccountsReceivableCurrent	923000	USD
CY2020Q2	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	0.01
CY2019Q2	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	0.01
CY2020Q2	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	60000000	shares
CY2019Q2	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	60000000	shares
CY2020Q2	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	27888217	shares
CY2019Q2	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	27888217	shares
CY2020	dei	Entity Registrant Name EntityRegistrantName	MATRIX SERVICE CO
CY2020Q2	us-gaap	Shares Outstanding SharesOutstanding	26141528	shares
CY2019Q2	us-gaap	Shares Outstanding SharesOutstanding	26807203	shares
CY2020Q2	us-gaap	Treasury Stock Shares TreasuryStockShares	1746689	shares
CY2019Q2	us-gaap	Treasury Stock Shares TreasuryStockShares	1081014	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
CY2018	us-gaap	Stock Issued During Period Shares Stock Options Exercised StockIssuedDuringPeriodSharesStockOptionsExercised	31050	shares
CY2018	mtrx	Deferred Shares Issued DeferredSharesIssued	253241	shares
CY2018	us-gaap	Stock Issued During Period Shares Employee Stock Purchase Plans StockIssuedDuringPeriodSharesEmployeeStockPurchasePlans	21920	shares
CY2018	us-gaap	Treasury Stock Shares Acquired TreasuryStockSharesAcquired	0	shares
CY2020Q2	us-gaap	Preferred Stock Shares Authorized PreferredStockSharesAuthorized	5000000.0	shares
CY2019Q2	us-gaap	Preferred Stock Shares Authorized PreferredStockSharesAuthorized	5000000.0	shares
CY2020Q2	us-gaap	Preferred Stock Shares Issued PreferredStockSharesIssued	0	shares
CY2019Q2	us-gaap	Preferred Stock Shares Issued PreferredStockSharesIssued	0	shares
CY2020Q2	us-gaap	Preferred Stock Shares Outstanding PreferredStockSharesOutstanding	0	shares
CY2019Q2	us-gaap	Preferred Stock Shares Outstanding PreferredStockSharesOutstanding	0	shares
CY2020	us-gaap	Effective Income Tax Rate Reconciliation Share Based Compensation Excess Tax Benefit Amount EffectiveIncomeTaxRateReconciliationShareBasedCompensationExcessTaxBenefitAmount	200000	USD
CY2018	us-gaap	Effective Income Tax Rate Reconciliation Share Based Compensation Excess Tax Benefit Amount EffectiveIncomeTaxRateReconciliationShareBasedCompensationExcessTaxBenefitAmount	500000	USD
CY2019	us-gaap	Effective Income Tax Rate Reconciliation Share Based Compensation Excess Tax Benefit Amount EffectiveIncomeTaxRateReconciliationShareBasedCompensationExcessTaxBenefitAmount	-300000	USD
CY2018	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercises In Period Total Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue	300000	USD
CY2019	us-gaap	Defined Contribution Plan Cost Recognized DefinedContributionPlanCostRecognized	6200000	USD
CY2020	dei	Document Type DocumentType	10-K
CY2020	dei	Document Annual Report DocumentAnnualReport	true
CY2020	dei	Document Period End Date DocumentPeriodEndDate	2020-06-30
CY2020	dei	Document Transition Report DocumentTransitionReport	false
CY2020	dei	Entity File Number EntityFileNumber	001-15461
CY2020Q3	dei	Entity Common Stock Shares Outstanding EntityCommonStockSharesOutstanding	26460196	shares
CY2020	dei	Entity Incorporation State Country Code EntityIncorporationStateCountryCode	DE
CY2020	dei	Entity Tax Identification Number EntityTaxIdentificationNumber	73-1352174
CY2020	dei	Entity Address Address Line1 EntityAddressAddressLine1	5100 E. Skelly Drive,
CY2020	dei	Entity Address Address Line2 EntityAddressAddressLine2	Suite 500
CY2020	dei	Entity Address Postal Zip Code EntityAddressPostalZipCode	74135
CY2020	dei	Entity Address City Or Town EntityAddressCityOrTown	Tulsa,
CY2020	dei	Entity Address State Or Province EntityAddressStateOrProvince	OK
CY2020	dei	City Area Code CityAreaCode	918
CY2020	dei	Local Phone Number LocalPhoneNumber	838-8822
CY2020	dei	Security12b Title Security12bTitle	Common Stock, par value $0.01 per share
CY2020	dei	Trading Symbol TradingSymbol	MTRX
CY2020	dei	Security Exchange Name SecurityExchangeName	NASDAQ
CY2020	dei	Entity Well Known Seasoned Issuer EntityWellKnownSeasonedIssuer	No
CY2020	dei	Entity Voluntary Filers EntityVoluntaryFilers	No
CY2020	dei	Entity Current Reporting Status EntityCurrentReportingStatus	Yes
CY2020	dei	Entity Interactive Data Current EntityInteractiveDataCurrent	Yes
CY2020	dei	Entity Filer Category EntityFilerCategory	Accelerated Filer
CY2020	dei	Entity Small Business EntitySmallBusiness	false
CY2020	dei	Entity Emerging Growth Company EntityEmergingGrowthCompany	false
CY2020	dei	Icfr Auditor Attestation Flag IcfrAuditorAttestationFlag	true
CY2020	dei	Entity Shell Company EntityShellCompany	false
CY2019Q4	dei	Entity Public Float EntityPublicFloat	599000000	USD
CY2020	dei	Document Period End Date DocumentPeriodEndDate	2020-06-30
CY2020Q2	mtrx	Goodwill Attributable To Reporting Units At Risk For Impairment GoodwillAttributableToReportingUnitsAtRiskForImpairment	14200000	USD
CY2020	us-gaap	Revenues Revenues	1100938000	USD
CY2019	us-gaap	Revenues Revenues	1416680000	USD
CY2018	us-gaap	Revenues Revenues	1091553000	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
CY2018	us-gaap	Cost Of Goods And Services Sold CostOfGoodsAndServicesSold	999617000	USD
CY2020	us-gaap	Gross Profit GrossProfit	102176000	USD
CY2019	us-gaap	Gross Profit GrossProfit	131951000	USD
CY2018	us-gaap	Gross Profit GrossProfit	91936000	USD
CY2020	us-gaap	Selling General And Administrative Expense SellingGeneralAndAdministrativeExpense	86276000	USD
CY2019	us-gaap	Selling General And Administrative Expense SellingGeneralAndAdministrativeExpense	94021000	USD
CY2018	us-gaap	Selling General And Administrative Expense SellingGeneralAndAdministrativeExpense	84417000	USD
CY2020	us-gaap	Goodwill And Intangible Asset Impairment GoodwillAndIntangibleAssetImpairment	38515000	USD
CY2019	us-gaap	Goodwill And Intangible Asset Impairment GoodwillAndIntangibleAssetImpairment	0	USD
CY2018	us-gaap	Goodwill And Intangible Asset Impairment GoodwillAndIntangibleAssetImpairment	17998000	USD
CY2020	us-gaap	Restructuring Charges RestructuringCharges	14010000	USD
CY2019	us-gaap	Restructuring Charges RestructuringCharges	0	USD
CY2018	us-gaap	Restructuring Charges RestructuringCharges	0	USD
CY2020	us-gaap	Operating Income Loss OperatingIncomeLoss	-36625000	USD
CY2019	us-gaap	Operating Income Loss OperatingIncomeLoss	37930000	USD
CY2018	us-gaap	Operating Income Loss OperatingIncomeLoss	-10479000	USD
CY2020	us-gaap	Interest Expense InterestExpense	1597000	USD
CY2019	us-gaap	Interest Expense InterestExpense	1296000	USD
CY2018	us-gaap	Interest Expense InterestExpense	2600000	USD
CY2020	us-gaap	Investment Income Interest InvestmentIncomeInterest	1270000	USD
CY2020	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-1.24
CY2019	us-gaap	Investment Income Interest InvestmentIncomeInterest	1167000	USD
CY2018	us-gaap	Investment Income Interest InvestmentIncomeInterest	381000	USD
CY2020	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	308000	USD
CY2019	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	611000	USD
CY2018	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	550000	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
CY2018	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	-12148000	USD
CY2020	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	-3570000	USD
CY2019	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	10430000	USD
CY2018	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	-668000	USD
CY2020	us-gaap	Profit Loss ProfitLoss	-33074000	USD
CY2019	us-gaap	Profit Loss ProfitLoss	27982000	USD
CY2018	us-gaap	Profit Loss ProfitLoss	-11480000	USD
CY2020	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-1.24
CY2019	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.04
CY2018	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-0.43
CY2019	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.01
CY2018	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-0.43
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
CY2018	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	26769000	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
CY2018	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	26769000	shares
CY2020	us-gaap	Profit Loss ProfitLoss	-33074000	USD
CY2019	us-gaap	Profit Loss ProfitLoss	27982000	USD
CY2018	us-gaap	Profit Loss ProfitLoss	-11480000	USD
CY2020	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Net Of Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax	-622000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Net Of Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax	-340000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Net Of Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax	-87000	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
CY2018	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	-11567000	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
CY2020Q2	us-gaap	Accounts Receivable Net Current AccountsReceivableNetCurrent	160671000	USD
CY2019Q2	us-gaap	Accounts Receivable Net Current AccountsReceivableNetCurrent	218432000	USD
CY2020Q2	us-gaap	Contract With Customer Asset Net Current ContractWithCustomerAssetNetCurrent	59548000	USD
CY2019Q2	us-gaap	Contract With Customer Asset Net Current ContractWithCustomerAssetNetCurrent	96083000	USD
CY2020Q2	us-gaap	Inventory Net InventoryNet	6460000	USD
CY2019Q2	us-gaap	Inventory Net InventoryNet	8017000	USD
CY2020Q2	us-gaap	Income Taxes Receivable IncomeTaxesReceivable	3919000	USD
CY2019Q2	us-gaap	Income Taxes Receivable IncomeTaxesReceivable	29000	USD
CY2020Q2	us-gaap	Other Assets Current OtherAssetsCurrent	4526000	USD
CY2019Q2	us-gaap	Other Assets Current OtherAssetsCurrent	5034000	USD
CY2020Q2	us-gaap	Assets Current AssetsCurrent	335160000	USD
CY2019Q2	us-gaap	Assets Current AssetsCurrent	417310000	USD
CY2020Q2	mtrx	Land Buildings And Improvements Gross LandBuildingsAndImprovementsGross	42695000	USD
CY2019Q2	mtrx	Land Buildings And Improvements Gross LandBuildingsAndImprovementsGross	41179000	USD
CY2020Q2	us-gaap	Machinery And Equipment Gross MachineryAndEquipmentGross	94154000	USD
CY2019Q2	us-gaap	Machinery And Equipment Gross MachineryAndEquipmentGross	91793000	USD
CY2020Q2	mtrx	Transportation Equipment Gross TransportationEquipmentGross	55864000	USD
CY2019Q2	mtrx	Transportation Equipment Gross TransportationEquipmentGross	52526000	USD
CY2020Q2	mtrx	Office Equipment And Capitalized Computer Software Gross OfficeEquipmentAndCapitalizedComputerSoftwareGross	39356000	USD
CY2019Q2	mtrx	Office Equipment And Capitalized Computer Software Gross OfficeEquipmentAndCapitalizedComputerSoftwareGross	43632000	USD
CY2020Q2	us-gaap	Construction In Progress Gross ConstructionInProgressGross	4427000	USD
CY2019Q2	us-gaap	Construction In Progress Gross ConstructionInProgressGross	7619000	USD
CY2020Q2	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	236496000	USD
CY2019Q2	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	236749000	USD
CY2020Q2	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	155748000	USD
CY2019Q2	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	157414000	USD
CY2020Q2	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	80748000	USD
CY2019Q2	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	79335000	USD
CY2020Q2	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	21375000	USD
CY2019Q2	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	0	USD
CY2020Q2	us-gaap	Goodwill Goodwill	60369000	USD
CY2019Q2	us-gaap	Goodwill Goodwill	93368000	USD
CY2020Q2	us-gaap	Intangible Assets Net Excluding Goodwill IntangibleAssetsNetExcludingGoodwill	8837000	USD
CY2019Q2	us-gaap	Intangible Assets Net Excluding Goodwill IntangibleAssetsNetExcludingGoodwill	19472000	USD
CY2020Q2	us-gaap	Deferred Income Tax Assets Net DeferredIncomeTaxAssetsNet	5988000	USD
CY2019Q2	us-gaap	Deferred Income Tax Assets Net DeferredIncomeTaxAssetsNet	2683000	USD
CY2020Q2	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	4833000	USD
CY2019Q2	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	21226000	USD
CY2020Q2	us-gaap	Assets Assets	517310000	USD
CY2019Q2	us-gaap	Assets Assets	633394000	USD
CY2020Q2	us-gaap	Accounts Payable Current AccountsPayableCurrent	73094000	USD
CY2019Q2	us-gaap	Accounts Payable Current AccountsPayableCurrent	114647000	USD
CY2020Q2	us-gaap	Contract With Customer Liability Current ContractWithCustomerLiabilityCurrent	63889000	USD
CY2019Q2	us-gaap	Contract With Customer Liability Current ContractWithCustomerLiabilityCurrent	105626000	USD
CY2020Q2	us-gaap	Employee Related Liabilities Current EmployeeRelatedLiabilitiesCurrent	16205000	USD
CY2019Q2	us-gaap	Employee Related Liabilities Current EmployeeRelatedLiabilitiesCurrent	38357000	USD
CY2020Q2	us-gaap	Accrued Insurance Current AccruedInsuranceCurrent	7301000	USD
CY2019Q2	us-gaap	Accrued Insurance Current AccruedInsuranceCurrent	9021000	USD
CY2020Q2	us-gaap	Operating Lease Liability Current OperatingLeaseLiabilityCurrent	7568000	USD
CY2019Q2	us-gaap	Operating Lease Liability Current OperatingLeaseLiabilityCurrent	0	USD
CY2020Q2	us-gaap	Accrued Income Taxes Current AccruedIncomeTaxesCurrent	0	USD
CY2019Q2	us-gaap	Accrued Income Taxes Current AccruedIncomeTaxesCurrent	2517000	USD
CY2020Q2	us-gaap	Other Liabilities Current OtherLiabilitiesCurrent	7890000	USD
CY2019Q2	us-gaap	Other Liabilities Current OtherLiabilitiesCurrent	5331000	USD
CY2020Q2	us-gaap	Liabilities Current LiabilitiesCurrent	175947000	USD
CY2019Q2	us-gaap	Liabilities Current LiabilitiesCurrent	275499000	USD
CY2020Q2	us-gaap	Deferred Income Tax Liabilities Net DeferredIncomeTaxLiabilitiesNet	61000	USD
CY2019Q2	us-gaap	Deferred Income Tax Liabilities Net DeferredIncomeTaxLiabilitiesNet	298000	USD
CY2020Q2	us-gaap	Operating Lease Liability Noncurrent OperatingLeaseLiabilityNoncurrent	19997000	USD
CY2019Q2	us-gaap	Operating Lease Liability Noncurrent OperatingLeaseLiabilityNoncurrent	0	USD
CY2020Q2	us-gaap	Line Of Credit LineOfCredit	9208000	USD
CY2019Q2	us-gaap	Line Of Credit LineOfCredit	5347000	USD
CY2020Q2	us-gaap	Liabilities Other Than Longterm Debt Noncurrent LiabilitiesOtherThanLongtermDebtNoncurrent	4208000	USD
CY2019Q2	us-gaap	Liabilities Other Than Longterm Debt Noncurrent LiabilitiesOtherThanLongtermDebtNoncurrent	293000	USD
CY2020Q2	us-gaap	Liabilities Liabilities	209421000	USD
CY2019Q2	us-gaap	Liabilities Liabilities	281437000	USD
CY2020Q2	us-gaap	Commitments And Contingencies CommitmentsAndContingencies		USD
CY2019Q2	us-gaap	Commitments And Contingencies CommitmentsAndContingencies		USD
CY2020Q2	us-gaap	Common Stock Value CommonStockValue	279000	USD
CY2019Q2	us-gaap	Common Stock Value CommonStockValue	279000	USD
CY2020Q2	us-gaap	Additional Paid In Capital AdditionalPaidInCapital	138966000	USD
CY2019Q2	us-gaap	Additional Paid In Capital AdditionalPaidInCapital	137712000	USD
CY2020Q2	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	206402000	USD
CY2019Q2	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	239476000	USD
CY2020Q2	us-gaap	Accumulated Other Comprehensive Income Loss Foreign Currency Translation Adjustment Net Of Tax AccumulatedOtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentNetOfTax	-8373000	USD
CY2019Q2	us-gaap	Accumulated Other Comprehensive Income Loss Foreign Currency Translation Adjustment Net Of Tax AccumulatedOtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentNetOfTax	-7751000	USD
CY2020Q2	us-gaap	Stockholders Equity Before Treasury Stock StockholdersEquityBeforeTreasuryStock	337274000	USD
CY2019Q2	us-gaap	Stockholders Equity Before Treasury Stock StockholdersEquityBeforeTreasuryStock	369716000	USD
CY2020Q2	us-gaap	Treasury Stock Value TreasuryStockValue	29385000	USD
CY2019Q2	us-gaap	Treasury Stock Value TreasuryStockValue	17759000	USD
CY2020Q2	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	307889000	USD
CY2019Q2	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	351957000	USD
CY2020Q2	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	517310000	USD
CY2019Q2	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	633394000	USD
CY2020	us-gaap	Profit Loss ProfitLoss	-33074000	USD
CY2019	us-gaap	Profit Loss ProfitLoss	27982000	USD
CY2018	us-gaap	Profit Loss ProfitLoss	-11480000	USD
CY2020	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	19124000	USD
CY2019	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	18224000	USD
CY2018	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	20347000	USD
CY2020	us-gaap	Goodwill And Intangible Asset Impairment GoodwillAndIntangibleAssetImpairment	38515000	USD
CY2019	us-gaap	Goodwill And Intangible Asset Impairment GoodwillAndIntangibleAssetImpairment	0	USD
CY2018	us-gaap	Goodwill And Intangible Asset Impairment GoodwillAndIntangibleAssetImpairment	17998000	USD
CY2020	us-gaap	Share Based Compensation ShareBasedCompensation	9877000	USD
CY2019	us-gaap	Share Based Compensation ShareBasedCompensation	11908000	USD
CY2018	us-gaap	Share Based Compensation ShareBasedCompensation	8618000	USD
CY2020	us-gaap	Other Asset Impairment Charges OtherAssetImpairmentCharges	5215000	USD
CY2019	us-gaap	Other Asset Impairment Charges OtherAssetImpairmentCharges	0	USD
CY2018	us-gaap	Other Asset Impairment Charges OtherAssetImpairmentCharges	0	USD
CY2020	mtrx	Deferred Income Tax Expense Benefit Socf DeferredIncomeTaxExpenseBenefitSocf	-3630000	USD
CY2019	mtrx	Deferred Income Tax Expense Benefit Socf DeferredIncomeTaxExpenseBenefitSocf	2061000	USD
CY2018	mtrx	Deferred Income Tax Expense Benefit Socf DeferredIncomeTaxExpenseBenefitSocf	-1186000	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
CY2018	us-gaap	Gain Loss On Sale Of Business GainLossOnSaleOfBusiness	0	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
CY2018	us-gaap	Gain Loss On Sale Of Property Plant Equipment GainLossOnSaleOfPropertyPlantEquipment	662000	USD
CY2020	us-gaap	Provision For Doubtful Accounts ProvisionForDoubtfulAccounts	1158000	USD
CY2019	us-gaap	Provision For Doubtful Accounts ProvisionForDoubtfulAccounts	5000	USD
CY2019	us-gaap	Other Noncash Income Expense OtherNoncashIncomeExpense	-701000	USD
CY2018	us-gaap	Other Noncash Income Expense OtherNoncashIncomeExpense	-397000	USD
CY2018	us-gaap	Provision For Doubtful Accounts ProvisionForDoubtfulAccounts	107000	USD
CY2020	us-gaap	Other Noncash Income Expense OtherNoncashIncomeExpense	7000	USD
CY2020	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	-56603000	USD
CY2019	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	15374000	USD
CY2018	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	-5504000	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
CY2018	us-gaap	Increase Decrease In Contract With Customer Asset IncreaseDecreaseInContractWithCustomerAsset	-14548000	USD
CY2020	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	-1557000	USD
CY2019	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	2872000	USD
CY2018	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	1415000	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
CY2018	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	-369000	USD
CY2020	us-gaap	Proceeds From Stock Plans ProceedsFromStockPlans	320000	USD
CY2020	us-gaap	Increase Decrease In Accounts Payable IncreaseDecreaseInAccountsPayable	-38915000	USD
CY2019	us-gaap	Increase Decrease In Accounts Payable IncreaseDecreaseInAccountsPayable	32651000	USD
CY2018	us-gaap	Increase Decrease In Accounts Payable IncreaseDecreaseInAccountsPayable	-25883000	USD
CY2020	us-gaap	Increase Decrease In Contract With Customer Liability IncreaseDecreaseInContractWithCustomerLiability	-41737000	USD
CY2019	us-gaap	Increase Decrease In Contract With Customer Liability IncreaseDecreaseInContractWithCustomerLiability	-14983000	USD
CY2018	us-gaap	Increase Decrease In Contract With Customer Liability IncreaseDecreaseInContractWithCustomerLiability	45613000	USD
CY2020	us-gaap	Increase Decrease In Accrued Liabilities IncreaseDecreaseInAccruedLiabilities	-17398000	USD
CY2019	us-gaap	Increase Decrease In Accrued Liabilities IncreaseDecreaseInAccruedLiabilities	14427000	USD
CY2018	us-gaap	Increase Decrease In Accrued Liabilities IncreaseDecreaseInAccruedLiabilities	1796000	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
CY2018	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	74671000	USD
CY2020	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	18539000	USD
CY2019	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	19558000	USD
CY2018	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	8711000	USD
CY2020	us-gaap	Payments To Acquire Businesses Net Of Cash Acquired PaymentsToAcquireBusinessesNetOfCashAcquired	0	USD
CY2019	us-gaap	Payments To Acquire Businesses Net Of Cash Acquired PaymentsToAcquireBusinessesNetOfCashAcquired	0	USD
CY2018	us-gaap	Payments To Acquire Businesses Net Of Cash Acquired PaymentsToAcquireBusinessesNetOfCashAcquired	1687000	USD
CY2020	us-gaap	Proceeds From Divestiture Of Businesses ProceedsFromDivestitureOfBusinesses	0	USD
CY2019	us-gaap	Proceeds From Divestiture Of Businesses ProceedsFromDivestitureOfBusinesses	3885000	USD
CY2018	us-gaap	Proceeds From Divestiture Of Businesses ProceedsFromDivestitureOfBusinesses	0	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
CY2018	us-gaap	Proceeds From Sale Of Productive Assets ProceedsFromSaleOfProductiveAssets	1062000	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
CY2018	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-9336000	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
CY2018	us-gaap	Proceeds From Long Term Lines Of Credit ProceedsFromLongTermLinesOfCredit	85317000	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
CY2018	us-gaap	Repayments Of Long Term Lines Of Credit RepaymentsOfLongTermLinesOfCredit	130248000	USD
CY2020	us-gaap	Payments Of Debt Issuance Costs PaymentsOfDebtIssuanceCosts	0	USD
CY2019	us-gaap	Payments Of Debt Issuance Costs PaymentsOfDebtIssuanceCosts	0	USD
CY2018	us-gaap	Payments Of Debt Issuance Costs PaymentsOfDebtIssuanceCosts	364000	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
CY2018	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	0	USD
CY2020	us-gaap	Proceeds From Stock Options Exercised ProceedsFromStockOptionsExercised	0	USD
CY2019	us-gaap	Proceeds From Stock Options Exercised ProceedsFromStockOptionsExercised	128000	USD
CY2018	us-gaap	Proceeds From Stock Options Exercised ProceedsFromStockOptionsExercised	317000	USD
CY2019	us-gaap	Proceeds From Stock Plans ProceedsFromStockPlans	311000	USD
CY2018	us-gaap	Proceeds From Stock Plans ProceedsFromStockPlans	293000	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
CY2018	us-gaap	Payments For Repurchase Of Other Equity PaymentsForRepurchaseOfOtherEquity	627000	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
CY2018	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-45312000	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
CY2018	us-gaap	Effect Of Exchange Rate On Cash And Cash Equivalents EffectOfExchangeRateOnCashAndCashEquivalents	229000	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
CY2018	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	20252000	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
CY2017Q2	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	43805000	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
CY2020	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	6394000	USD
CY2019	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	3309000	USD
CY2018	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	1410000	USD
CY2020	us-gaap	Interest Paid Net InterestPaidNet	2148000	USD
CY2019	us-gaap	Interest Paid Net InterestPaidNet	1705000	USD
CY2018	us-gaap	Interest Paid Net InterestPaidNet	2719000	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
CY2018	us-gaap	Capital Expenditures Incurred But Not Yet Paid CapitalExpendituresIncurredButNotYetPaid	156000	USD
CY2017Q2	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	321809000	USD
CY2018	us-gaap	Profit Loss ProfitLoss	-11480000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-87000	USD
CY2018	us-gaap	Stock Issued During Period Value Employee Stock Purchase Plan StockIssuedDuringPeriodValueEmployeeStockPurchasePlan	293000	USD
CY2018	us-gaap	Stock Issued During Period Value Stock Options Exercised StockIssuedDuringPeriodValueStockOptionsExercised	317000	USD
CY2018	mtrx	Issuance Of Deferred Shares IssuanceOfDeferredShares	0	USD
CY2018	mtrx	Other Treasury Share Purchases OtherTreasurySharePurchases	627000	USD
CY2018	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	8618000	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
CY2020	us-gaap	Use Of Estimates UseOfEstimates	<div style="text-align:justify;margin-top:9pt;"><span style="background-color:rgb(255,255,255, 0.0);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="text-align:justify;margin-top:9pt;"><span style="background-color:rgb(255,255,255, 0.0);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>
CY2019Q3	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	24600000	USD
CY2019Q3	us-gaap	Operating Lease Liability OperatingLeaseLiability	25800000	USD
CY2020Q2	us-gaap	Revenue Remaining Performance Obligation RevenueRemainingPerformanceObligation	566400000	USD
CY2020Q2	mtrx	Performanceobligationstoberecognizedasrevenuewithinnexttwelvemonths Performanceobligationstoberecognizedasrevenuewithinnexttwelvemonths	429000000.0	USD
CY2020Q2	us-gaap	Contract With Customer Asset Net Current ContractWithCustomerAssetNetCurrent	59548000	USD
CY2019Q2	us-gaap	Contract With Customer Asset Net Current ContractWithCustomerAssetNetCurrent	96083000	USD
CY2020	mtrx	Changein Cie ChangeinCIE	-36535000	USD
CY2020Q2	us-gaap	Contract With Customer Liability Current ContractWithCustomerLiabilityCurrent	63889000	USD
CY2019Q2	us-gaap	Contract With Customer Liability Current ContractWithCustomerLiabilityCurrent	105626000	USD
CY2020	mtrx	Changein Bie ChangeinBIE	41737000	USD
CY2020Q2	mtrx	Contract With Customer Current Liability Net ContractWithCustomerCurrentLiabilityNet	-4341000	USD
CY2019Q2	mtrx	Contract With Customer Current Liability Net ContractWithCustomerCurrentLiabilityNet	-9543000	USD
CY2020	mtrx	Changeinnetcontractbalances Changeinnetcontractbalances	5202000	USD
CY2020	us-gaap	Contract With Customer Liability Revenue Recognized ContractWithCustomerLiabilityRevenueRecognized	104400000	USD
CY2020Q2	us-gaap	Construction Contractor Receivable Retainage Year One ConstructionContractorReceivableRetainageYearOne	37300000	USD
CY2019Q2	us-gaap	Construction Contractor Receivable Retainage Year One ConstructionContractorReceivableRetainageYearOne	21900000	USD
CY2020Q2	us-gaap	Construction Contractor Receivable Retainage After Year One ConstructionContractorReceivableRetainageAfterYearOne	1600000	USD
CY2019Q2	us-gaap	Construction Contractor Receivable Retainage After Year One ConstructionContractorReceivableRetainageAfterYearOne	17700000	USD
CY2020	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	1100938000	USD
CY2019	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	1416680000	USD
CY2018	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	1091553000	USD
CY2020	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	1100938000	USD
CY2019	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	1416680000	USD
CY2018	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	1091553000	USD
CY2017Q2	us-gaap	Goodwill Goodwill	113501000	USD
CY2018	us-gaap	Goodwill Impairment Loss GoodwillImpairmentLoss	-17281000	USD
CY2018	us-gaap	Goodwill Foreign Currency Translation Gain Loss GoodwillForeignCurrencyTranslationGainLoss	-58000	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
CY2020Q2	mtrx	Goodwill Attributable To Reporting Units At Risk For Impairment GoodwillAttributableToReportingUnitsAtRiskForImpairment	14200000	USD
CY2018	us-gaap	Impairment Of Intangible Assets Finitelived ImpairmentOfIntangibleAssetsFinitelived	700000	USD
CY2020Q2	us-gaap	Finite Lived Intangible Assets Gross FiniteLivedIntangibleAssetsGross	25872000	USD
CY2020Q2	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	17035000	USD
CY2020Q2	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	8837000	USD
CY2019Q2	us-gaap	Finite Lived Intangible Assets Gross FiniteLivedIntangibleAssetsGross	42604000	USD
CY2019Q2	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	23132000	USD
CY2019Q2	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	19472000	USD
CY2020	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	3400000	USD
CY2019	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	3300000	USD
CY2018	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	4800000	USD
CY2020Q2	us-gaap	Finite Lived Intangible Assets Amortization Expense Next Twelve Months FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths	2231000	USD
CY2020Q2	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Two FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo	1811000	USD
CY2020	mtrx	Sublimiton Australian Dollar Canadian Dollar Euroand Pounds Sterling SublimitonAustralianDollarCanadianDollarEuroandPoundsSterling	75.0	USD
CY2020Q2	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Three FiniteLivedIntangibleAssetsAmortizationExpenseYearThree	1729000	USD
CY2020Q2	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Four FiniteLivedIntangibleAssetsAmortizationExpenseYearFour	1415000	USD
CY2020Q2	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Five FiniteLivedIntangibleAssetsAmortizationExpenseYearFive	1096000	USD
CY2020Q2	us-gaap	Finite Lived Intangible Assets Amortization Expense After Year Five FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearFive	555000	USD
CY2020Q2	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	8837000	USD
CY2020Q2	us-gaap	Line Of Credit Facility Maximum Borrowing Capacity LineOfCreditFacilityMaximumBorrowingCapacity	300000000.0	USD
CY2020	us-gaap	Line Of Credit Facility Expiration Date1 LineOfCreditFacilityExpirationDate1	2022-02-08
CY2020	mtrx	Sublimitonlettersofcreditunderthecreditfacility Sublimitonlettersofcreditunderthecreditfacility	200.0	USD
CY2020	mtrx	Line Of Credit Basis Spread On Alternate Base Rate Minimum LineOfCreditBasisSpreadOnAlternateBaseRateMinimum	0.00625	Rate
CY2020	mtrx	Line Of Credit Basis Spread On Alternate Base Rate Maximum LineOfCreditBasisSpreadOnAlternateBaseRateMaximum	0.01625	Rate
CY2020	mtrx	Line Of Credit Basis Spread On Adjusted Liboeurib Oand Cdor Minimum LineOfCreditBasisSpreadOnAdjustedLIBOEURIBOandCDORMinimum	0.01625	Rate
CY2020	mtrx	Line Of Credit Basis Spread On Adjusted Liboeurib Oand Cdor Maximum LineOfCreditBasisSpreadOnAdjustedLIBOEURIBOandCDORMaximum	0.02625	Rate
CY2020	mtrx	Line Of Credit Basis Spread On Canadian Prime Rate Minimum LineOfCreditBasisSpreadOnCanadianPrimeRateMinimum	0.02125	Rate
CY2020	mtrx	Line Of Credit Basis Spread On Canadian Prime Rate Maximum LineOfCreditBasisSpreadOnCanadianPrimeRateMaximum	0.03125	Rate
CY2020	mtrx	Senior Leverage Ratio Maximum SeniorLeverageRatioMaximum	3.00
CY2020	mtrx	Senior Leverage Ratio Minimum SeniorLeverageRatioMinimum	1.00
CY2020	mtrx	Fixed Charge Coverage Ratio Maximum FixedChargeCoverageRatioMaximum	1.25
CY2020	mtrx	Fixed Charge Coverage Ratio Minimum FixedChargeCoverageRatioMinimum	1.00
CY2020	mtrx	Amount Of Limit On Asset Dispositions AmountOfLimitOnAssetDispositions	20.0	USD
CY2020Q2	us-gaap	Line Of Credit Facility Maximum Borrowing Capacity LineOfCreditFacilityMaximumBorrowingCapacity	300000000	USD
CY2019Q2	us-gaap	Line Of Credit Facility Maximum Borrowing Capacity LineOfCreditFacilityMaximumBorrowingCapacity	300000000	USD
CY2020Q2	mtrx	Capacity Constraint Due To Senior Leverage Ratio CapacityConstraintDueToSeniorLeverageRatio	162864000	USD
CY2019Q2	mtrx	Capacity Constraint Due To Senior Leverage Ratio CapacityConstraintDueToSeniorLeverageRatio	94323000	USD
CY2020Q2	mtrx	Line Of Credit Facility Maximum Borrowing Capacity After Consideration Of Capacity Constraint LineOfCreditFacilityMaximumBorrowingCapacityAfterConsiderationOfCapacityConstraint	137136000	USD
CY2019Q2	mtrx	Line Of Credit Facility Maximum Borrowing Capacity After Consideration Of Capacity Constraint LineOfCreditFacilityMaximumBorrowingCapacityAfterConsiderationOfCapacityConstraint	205677000	USD
CY2020Q2	mtrx	Letters Of Credit Issued LettersOfCreditIssued	34529000	USD
CY2019Q2	mtrx	Letters Of Credit Issued LettersOfCreditIssued	48147000	USD
CY2020Q2	us-gaap	Line Of Credit LineOfCredit	9208000	USD
CY2019Q2	us-gaap	Line Of Credit LineOfCredit	5347000	USD
CY2020Q2	us-gaap	Line Of Credit Facility Remaining Borrowing Capacity LineOfCreditFacilityRemainingBorrowingCapacity	93399000	USD
CY2020Q1	mtrx	Cares Act Charitable Contributions Deduction New Ceiling CARESActCharitableContributionsDeductionNewCeiling	0.25
CY2020Q1	mtrx	Cares Act Charitable Contributions Deduction Old Ceiling CARESActCharitableContributionsDeductionOldCeiling	0.10
CY2019Q2	us-gaap	Line Of Credit Facility Remaining Borrowing Capacity LineOfCreditFacilityRemainingBorrowingCapacity	152183000	USD
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
CY2020	mtrx	Cares Act Payroll Tax Credits CARESActPayrollTaxCredits	800000	USD
CY2020Q2	mtrx	Caresact Deferred Payroll Tax Liability CARESACTDeferredPayrollTaxLiability	3800000	USD
CY2020	mtrx	Canada Emergency Wage Subsidy Relief CanadaEmergencyWageSubsidyRelief	1100000	USD
CY2020	us-gaap	Income Loss From Continuing Operations Before Income Taxes Domestic IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic	-32660000	USD
CY2019	us-gaap	Income Loss From Continuing Operations Before Income Taxes Domestic IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic	46032000	USD
CY2018	us-gaap	Income Loss From Continuing Operations Before Income Taxes Domestic IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic	-2656000	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
CY2018	us-gaap	Income Loss From Continuing Operations Before Income Taxes Foreign IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign	-9492000	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
CY2018	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	-12148000	USD
CY2020	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	-376000	USD
CY2019	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	6085000	USD
CY2018	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	-121000	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
CY2018	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	135000	USD
CY2020	us-gaap	Current Foreign Tax Expense Benefit CurrentForeignTaxExpenseBenefit	23000	USD
CY2019	us-gaap	Current Foreign Tax Expense Benefit CurrentForeignTaxExpenseBenefit	-97000	USD
CY2018	us-gaap	Current Foreign Tax Expense Benefit CurrentForeignTaxExpenseBenefit	504000	USD
CY2020	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	59000	USD
CY2019	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	8378000	USD
CY2018	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	518000	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
CY2018	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	1093000	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
CY2018	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	-590000	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
CY2018	us-gaap	Deferred Foreign Income Tax Expense Benefit DeferredForeignIncomeTaxExpenseBenefit	-1689000	USD
CY2020	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-3629000	USD
CY2019	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	2052000	USD
CY2019	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	2288000	USD
CY2018	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-1186000	USD
CY2020	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	-3570000	USD
CY2019	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	10430000	USD
CY2018	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	-668000	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
CY2018	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	-3408000	USD
CY2020	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	-768000	USD
CY2018	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	247000	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
CY2018	us-gaap	Income Tax Reconciliation Nondeductible Expense Impairment Losses IncomeTaxReconciliationNondeductibleExpenseImpairmentLosses	2342000	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
CY2018	mtrx	Income Tax Reconciliation Charges Without Tax Benefit IncomeTaxReconciliationChargesWithoutTaxBenefit	-1100000	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
CY2018	us-gaap	Income Tax Reconciliation Change In Deferred Tax Assets Valuation Allowance IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance	1173000	USD
CY2020	mtrx	Reversalofbranchliability Reversalofbranchliability	0	USD
CY2019	mtrx	Reversalofbranchliability Reversalofbranchliability	-3546000	USD
CY2018	mtrx	Reversalofbranchliability Reversalofbranchliability	0	USD
CY2020	mtrx	Effectofnewaccountingstandardcomparedtooldstandard Effectofnewaccountingstandardcomparedtooldstandard	-230000	USD
CY2019	mtrx	Effectofnewaccountingstandardcomparedtooldstandard Effectofnewaccountingstandardcomparedtooldstandard	296000	USD
CY2018	mtrx	Effectofnewaccountingstandardcomparedtooldstandard Effectofnewaccountingstandardcomparedtooldstandard	-511000	USD
CY2020	us-gaap	Income Tax Reconciliation Other Reconciling Items IncomeTaxReconciliationOtherReconcilingItems	0	USD
CY2019	us-gaap	Income Tax Reconciliation Other Reconciling Items IncomeTaxReconciliationOtherReconcilingItems	0	USD
CY2018	us-gaap	Income Tax Reconciliation Other Reconciling Items IncomeTaxReconciliationOtherReconcilingItems	-455000	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
CY2018	us-gaap	Income Tax Reconciliation Tax Credits Research IncomeTaxReconciliationTaxCreditsResearch	1665000	USD
CY2020	us-gaap	Income Tax Reconciliation Foreign Income Tax Rate Differential IncomeTaxReconciliationForeignIncomeTaxRateDifferential	-132000	USD
CY2019	us-gaap	Income Tax Reconciliation Foreign Income Tax Rate Differential IncomeTaxReconciliationForeignIncomeTaxRateDifferential	-248000	USD
CY2018	us-gaap	Income Tax Reconciliation Foreign Income Tax Rate Differential IncomeTaxReconciliationForeignIncomeTaxRateDifferential	-10000	USD
CY2020	us-gaap	Income Tax Reconciliation Tax Contingencies Other IncomeTaxReconciliationTaxContingenciesOther	20000	USD
CY2018	us-gaap	Income Tax Reconciliation Other Adjustments IncomeTaxReconciliationOtherAdjustments	-496000	USD
CY2020	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	-3570000	USD
CY2019	us-gaap	Income Tax Reconciliation Tax Contingencies Other IncomeTaxReconciliationTaxContingenciesOther	22000	USD
CY2018	us-gaap	Income Tax Reconciliation Tax Contingencies Other IncomeTaxReconciliationTaxContingenciesOther	-7000	USD
CY2020	us-gaap	Income Tax Reconciliation Other Adjustments IncomeTaxReconciliationOtherAdjustments	-83000	USD
CY2019	us-gaap	Income Tax Reconciliation Other Adjustments IncomeTaxReconciliationOtherAdjustments	370000	USD
CY2019	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	10430000	USD
CY2018	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	-668000	USD
CY2020	mtrx	Amount Of Non Deductible Goodwill Impaired AmountOfNonDeductibleGoodwillImpaired	8600000	USD
CY2018	mtrx	Amount Of Non Deductible Goodwill Impaired AmountOfNonDeductibleGoodwillImpaired	8300000	USD
CY2020Q2	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Warranty Reserves DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsWarrantyReserves	206000	USD
CY2019Q2	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 Allowance For Doubtful Accounts DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAllowanceForDoubtfulAccounts	233000	USD
CY2019Q2	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Allowance For Doubtful Accounts DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAllowanceForDoubtfulAccounts	238000	USD
CY2020Q2	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Compensated Absences DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsCompensatedAbsences	669000	USD
CY2019Q2	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Compensated Absences DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsCompensatedAbsences	616000	USD
CY2020Q2	mtrx	Deferred Tax Assets Insurance Reserve DeferredTaxAssetsInsuranceReserve	1221000	USD
CY2019Q2	mtrx	Deferred Tax Assets Insurance Reserve DeferredTaxAssetsInsuranceReserve	1577000	USD
CY2020Q2	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Legal Settlements DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsLegalSettlements	207000	USD
CY2019Q2	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Legal Settlements DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsLegalSettlements	1000	USD
CY2020Q2	us-gaap	Deferred Tax Assets Tax Credit Carryforwards DeferredTaxAssetsTaxCreditCarryforwards	10354000	USD
CY2019Q2	us-gaap	Deferred Tax Assets Tax Credit Carryforwards DeferredTaxAssetsTaxCreditCarryforwards	10054000	USD
CY2020Q2	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	7763000	USD
CY2019Q2	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	4959000	USD
CY2020Q2	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Pensions DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsPensions	1447000	USD
CY2019Q2	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Pensions DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsPensions	1115000	USD
CY2020Q2	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Share Based Compensation Cost DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost	3231000	USD
CY2019Q2	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Share Based Compensation Cost DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost	3679000	USD
CY2020Q2	mtrx	Deferred Tax Assets Accrued Losses DeferredTaxAssetsAccruedLosses	96000	USD
CY2019Q2	mtrx	Deferred Tax Assets Accrued Losses DeferredTaxAssetsAccruedLosses	194000	USD
CY2020Q2	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Restructuring Charges DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsRestructuringCharges	1381000	USD
CY2019Q2	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Restructuring Charges DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsRestructuringCharges	0	USD
CY2020Q2	us-gaap	Deferred Tax Assets Other DeferredTaxAssetsOther	843000	USD
CY2019Q2	us-gaap	Deferred Tax Assets Other DeferredTaxAssetsOther	833000	USD
CY2020Q2	us-gaap	Deferred Tax Assets Net DeferredTaxAssetsNet	12125000	USD
CY2019Q2	us-gaap	Deferred Tax Assets Net DeferredTaxAssetsNet	13554000	USD
CY2020Q2	us-gaap	Deferred Tax Liabilities Property Plant And Equipment DeferredTaxLiabilitiesPropertyPlantAndEquipment	11313000	USD
CY2019Q2	us-gaap	Deferred Tax Liabilities Property Plant And Equipment DeferredTaxLiabilitiesPropertyPlantAndEquipment	9349000	USD
CY2020Q2	us-gaap	Deferred Tax Liabilities Goodwill And Intangible Assets Goodwill DeferredTaxLiabilitiesGoodwillAndIntangibleAssetsGoodwill	-5195000	USD
CY2019Q2	us-gaap	Deferred Tax Liabilities Goodwill And Intangible Assets Goodwill DeferredTaxLiabilitiesGoodwillAndIntangibleAssetsGoodwill	1770000	USD
CY2020Q2	mtrx	Future Branch Liability FutureBranchLiability	74000	USD
CY2019Q2	mtrx	Future Branch Liability FutureBranchLiability	34000	USD
CY2020Q2	us-gaap	Deferred Tax Liabilities Other DeferredTaxLiabilitiesOther	6000	USD
CY2019Q2	us-gaap	Deferred Tax Liabilities Other DeferredTaxLiabilitiesOther	16000	USD
CY2020Q2	us-gaap	Deferred Income Tax Liabilities DeferredIncomeTaxLiabilities	6198000	USD
CY2019Q2	us-gaap	Deferred Income Tax Liabilities DeferredIncomeTaxLiabilities	11169000	USD
CY2020Q2	us-gaap	Deferred Tax Assets Liabilities Net DeferredTaxAssetsLiabilitiesNet	5927000	USD
CY2019Q2	us-gaap	Deferred Tax Assets Liabilities Net DeferredTaxAssetsLiabilitiesNet	2385000	USD
CY2020Q2	us-gaap	Lessee Operating Lease Liability Payments Due Year Three LesseeOperatingLeaseLiabilityPaymentsDueYearThree	3978000	USD
CY2020Q2	us-gaap	Deferred Income Tax Assets Net DeferredIncomeTaxAssetsNet	5988000	USD
CY2019Q2	us-gaap	Deferred Income Tax Assets Net DeferredIncomeTaxAssetsNet	2683000	USD
CY2020Q2	us-gaap	Deferred Income Tax Liabilities Net DeferredIncomeTaxLiabilitiesNet	61000	USD
CY2019Q2	us-gaap	Deferred Income Tax Liabilities Net DeferredIncomeTaxLiabilitiesNet	298000	USD
CY2020Q2	us-gaap	Deferred Tax Assets Liabilities Net DeferredTaxAssetsLiabilitiesNet	5927000	USD
CY2019Q2	us-gaap	Deferred Tax Assets Liabilities Net DeferredTaxAssetsLiabilitiesNet	2385000	USD
CY2020Q2	us-gaap	Liability For Uncertain Tax Positions Noncurrent LiabilityForUncertainTaxPositionsNoncurrent	500000	USD
CY2020Q2	us-gaap	Unapproved Change Orders Amount UnapprovedChangeOrdersAmount	14500000	USD
CY2019Q2	us-gaap	Unapproved Change Orders Amount UnapprovedChangeOrdersAmount	10100000	USD
CY2020Q2	us-gaap	Contracts Receivable Claims And Uncertain Amounts ContractsReceivableClaimsAndUncertainAmounts	17800000	USD
CY2020Q2	mtrx	Percentage Of Real Estate Leases PercentageOfRealEstateLeases	0.87
CY2020Q2	us-gaap	Lessee Operating Lease Term Of Contract LesseeOperatingLeaseTermOfContract	P16Y
CY2020	us-gaap	Operating Lease Impairment Loss OperatingLeaseImpairmentLoss	3200000	USD
CY2020	us-gaap	Operating Lease Cost OperatingLeaseCost	12274000	USD
CY2020	us-gaap	Short Term Lease Cost ShortTermLeaseCost	37371000	USD
CY2020	us-gaap	Lease Cost LeaseCost	49645000	USD
CY2020Q2	us-gaap	Lessee Operating Lease Liability Payments Due Next Twelve Months LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths	8719000	USD
CY2020Q2	us-gaap	Lessee Operating Lease Liability Payments Due Year Two LesseeOperatingLeaseLiabilityPaymentsDueYearTwo	5430000	USD
CY2020Q2	us-gaap	Lessee Operating Lease Liability Payments Due Year Four LesseeOperatingLeaseLiabilityPaymentsDueYearFour	3010000	USD
CY2020Q2	us-gaap	Lessee Operating Lease Liability Payments Due Year Five LesseeOperatingLeaseLiabilityPaymentsDueYearFive	2352000	USD
CY2020Q2	us-gaap	Lessee Operating Lease Liability Payments Due After Year Five LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive	9630000	USD
CY2020Q2	us-gaap	Lessee Operating Lease Liability Payments Due LesseeOperatingLeaseLiabilityPaymentsDue	33119000	USD
CY2020Q2	us-gaap	Lessee Operating Lease Liability Undiscounted Excess Amount LesseeOperatingLeaseLiabilityUndiscountedExcessAmount	-5554000	USD
CY2020Q2	us-gaap	Operating Lease Liability OperatingLeaseLiability	27565000	USD
CY2020Q2	us-gaap	Operating Lease Liability Current OperatingLeaseLiabilityCurrent	7568000	USD
CY2020Q2	us-gaap	Operating Lease Liability Noncurrent OperatingLeaseLiabilityNoncurrent	19997000	USD
CY2020Q2	us-gaap	Operating Lease Weighted Average Remaining Lease Term1 OperatingLeaseWeightedAverageRemainingLeaseTerm1	P6Y2M12D
CY2020Q2	us-gaap	Operating Lease Weighted Average Discount Rate Percent OperatingLeaseWeightedAverageDiscountRatePercent	0.056
CY2020	us-gaap	Operating Lease Payments OperatingLeasePayments	12798000	USD
CY2020	us-gaap	Right Of Use Asset Obtained In Exchange For Operating Lease Liability RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability	36984000	USD
CY2020	us-gaap	Other Significant Noncash Transaction Value Of Consideration Received1 OtherSignificantNoncashTransactionValueOfConsiderationReceived1	2500000	USD
CY2020Q2	us-gaap	Stock Repurchase Program Authorized Amount1 StockRepurchaseProgramAuthorizedAmount1	30000000.0	USD
CY2020	mtrx	Percentageofoutstandingsharesusedtodeterminemaximumsharesauthorizedundersharerepurchaseprogram Percentageofoutstandingsharesusedtodeterminemaximumsharesauthorizedundersharerepurchaseprogram	0.10
CY2020Q2	us-gaap	Stock Repurchase Program Number Of Shares Authorized To Be Repurchased StockRepurchaseProgramNumberOfSharesAuthorizedToBeRepurchased	2700000	shares
CY2020	us-gaap	Stock Repurchased During Period Shares StockRepurchasedDuringPeriodShares	1047606	shares
CY2020	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	17000000.0	USD
CY2020Q2	us-gaap	Stock Repurchase Program Remaining Number Of Shares Authorized To Be Repurchased StockRepurchaseProgramRemainingNumberOfSharesAuthorizedToBeRepurchased	1349037	shares
CY2020	us-gaap	Shares Paid For Tax Withholding For Share Based Compensation SharesPaidForTaxWithholdingForShareBasedCompensation	181081	shares
CY2019	us-gaap	Shares Paid For Tax Withholding For Share Based Compensation SharesPaidForTaxWithholdingForShareBasedCompensation	79111	shares
CY2020Q2	us-gaap	Treasury Stock Shares TreasuryStockShares	1746689	shares
CY2020	us-gaap	Share Based Compensation ShareBasedCompensation	9900000	USD
CY2019	us-gaap	Share Based Compensation ShareBasedCompensation	11900000	USD
CY2018	us-gaap	Share Based Compensation ShareBasedCompensation	8600000	USD
CY2020Q2	us-gaap	Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized	11900000	USD
CY2020	us-gaap	Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized Period For Recognition1 EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition1	P1Y7M6D
CY2020	us-gaap	Effective Income Tax Rate Reconciliation Share Based Compensation Excess Tax Benefit Amount EffectiveIncomeTaxRateReconciliationShareBasedCompensationExcessTaxBenefitAmount	200000	USD
CY2018	us-gaap	Effective Income Tax Rate Reconciliation Share Based Compensation Excess Tax Benefit Amount EffectiveIncomeTaxRateReconciliationShareBasedCompensationExcessTaxBenefitAmount	500000	USD
CY2020Q2	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Number Of Shares Authorized ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized	1600000	shares
CY2020Q2	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Number Of Shares Available For Grant ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant	1473424	shares
CY2020	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Expiration Period SharebasedCompensationArrangementBySharebasedPaymentAwardExpirationPeriod	P10Y
CY2019Q2	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	53700	shares
CY2019	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Outstanding Weighted Average Remaining Contractual Term2 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm2	P2Y4M24D
CY2019Q2	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	10.19
CY2019Q2	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue	541000	USD
CY2020	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Gross ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross	0	shares
CY2020	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Grants In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice	0
CY2020	us-gaap	Stock Issued During Period Shares Stock Options Exercised StockIssuedDuringPeriodSharesStockOptionsExercised	0	shares
CY2020	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Exercises In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice	0
CY2020	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercises In Period Total Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue	0	USD
CY2020	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Expirations In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExpirationsInPeriod	0	shares
CY2020Q2	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
CY2020	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Expirations In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExpirationsInPeriodWeightedAverageExercisePrice	0
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
CY2020Q2	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Vested And Expected To Vest Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingNumber	53700	shares
CY2020	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Vested And Expected To Vest Outstanding Weighted Average Remaining Contractual Term1 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingWeightedAverageRemainingContractualTerm1	P1Y4M24D
CY2020Q2	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Vested And Expected To Vest Outstanding Aggregate Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingAggregateIntrinsicValue	0	USD
CY2020Q2	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercisable Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber	53700	shares
CY2020	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Exercisable Weighted Average Remaining Contractual Term1 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableWeightedAverageRemainingContractualTerm1	P1Y4M24D
CY2020Q2	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercisable Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice	10.19
CY2020Q2	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Exercisable Intrinsic Value1 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableIntrinsicValue1	0	USD
CY2019	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercises In Period Total Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue	100000	USD
CY2018	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercises In Period Total Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue	300000	USD
CY2020Q2	mtrx	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Method Numberof Simulations Used ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueMethodNumberofSimulationsUsed	100000	shares
CY2019Q2	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Nonvested Number ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber	1459511	shares
CY2019Q2	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Nonvested Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue	19.88
CY2020	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Grants In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod	490322	shares
CY2020	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	21.79
CY2020	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Vested In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod	542279	shares
CY2020	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	19.43
CY2020	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Forfeited In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod	172636	shares
CY2020	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Forfeitures Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue	19.51
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
CY2019	mtrx	Share Based Compensation Arrangement By Share Based Payment Award Deferred Grants In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardDeferredGrantsInPeriod	602148	shares
CY2018	mtrx	Share Based Compensation Arrangement By Share Based Payment Award Deferred Grants In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardDeferredGrantsInPeriod	715539	shares
CY2019	mtrx	Share Based Compensation Arrangement By Share Based Payment Award Deferred Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardDeferredWeightedAverageGrantDateFairValue	25.10
CY2018	mtrx	Share Based Compensation Arrangement By Share Based Payment Award Deferred Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardDeferredWeightedAverageGrantDateFairValue	13.64
CY2019	mtrx	Share Based Compensation Arrangement By Share Based Payment Award Deferred Shares Vested And Released ShareBasedCompensationArrangementByShareBasedPaymentAwardDeferredSharesVestedAndReleased	314711	shares
CY2018	mtrx	Share Based Compensation Arrangement By Share Based Payment Award Deferred Shares Vested And Released ShareBasedCompensationArrangementByShareBasedPaymentAwardDeferredSharesVestedAndReleased	253241	shares
CY2019	us-gaap	Net Income Loss NetIncomeLoss	27982000	USD
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
CY2018Q2	mtrx	Share Based Compensation Arrangement By Share Based Payment Award Deferred Shares Vested And Released Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardDeferredSharesVestedAndReleasedWeightedAverageGrantDateFairValue	19.60
CY2020	us-gaap	Net Income Loss NetIncomeLoss	-33074000	USD
CY2018	us-gaap	Net Income Loss NetIncomeLoss	-11480000	USD
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
CY2018	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	26769000	shares
CY2020	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-1.24
CY2019	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.04
CY2018	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-0.43
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
CY2018	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	26769000	shares
CY2019	us-gaap	Incremental Common Shares Attributable To Nonvested Shares With Forfeitable Dividends IncrementalCommonSharesAttributableToNonvestedSharesWithForfeitableDividends	668000	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
CY2018	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	0	shares
CY2020	us-gaap	Incremental Common Shares Attributable To Nonvested Shares With Forfeitable Dividends IncrementalCommonSharesAttributableToNonvestedSharesWithForfeitableDividends	0	shares
CY2018	us-gaap	Incremental Common Shares Attributable To Nonvested Shares With Forfeitable Dividends IncrementalCommonSharesAttributableToNonvestedSharesWithForfeitableDividends	0	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
CY2018	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	26769000	shares
CY2020	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-1.24
CY2019	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.01
CY2018	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-0.43
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
CY2018	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	455000	shares
CY2020	mtrx	Defined Contribution Plan Maximum Annual Contribution By Employee Percent DefinedContributionPlanMaximumAnnualContributionByEmployeePercent	0.25
CY2020	us-gaap	Defined Contribution Plan Employer Matching Contribution Percent DefinedContributionPlanEmployerMatchingContributionPercent	1
CY2020	mtrx	Percentage Of Employee Contribution As Base For Employer Contributions PercentageOfEmployeeContributionAsBaseForEmployerContributions	0.03
CY2020	mtrx	Defined Contribution Plan Employer Matching Contribution Percent For Two Percent Of Employee Contribution DefinedContributionPlanEmployerMatchingContributionPercentForTwoPercentOfEmployeeContribution	0.50
CY2020	mtrx	Percentage Of Employee Contribution As Base For Employer Contribution To Match PercentageOfEmployeeContributionAsBaseForEmployerContributionToMatch	0.02
CY2020	us-gaap	Defined Contribution Plan Cost Recognized DefinedContributionPlanCostRecognized	6200000	USD
CY2018	us-gaap	Defined Contribution Plan Cost Recognized DefinedContributionPlanCostRecognized	5800000	USD
CY2020	us-gaap	Multiemployer Plan Pension Insignificant Employer Contribution Cost MultiemployerPlanPensionInsignificantEmployerContributionCost	9172000	USD
CY2020	us-gaap	Multiemployer Plan Pension Insignificant Employer Contribution Cost MultiemployerPlanPensionInsignificantEmployerContributionCost	9172000	USD
CY2020	us-gaap	Multiemployer Plan Pension Insignificant Employer Contribution Cost MultiemployerPlanPensionInsignificantEmployerContributionCost	9172000	USD
CY2019	us-gaap	Multiemployer Plan Pension Insignificant Employer Contribution Cost MultiemployerPlanPensionInsignificantEmployerContributionCost	15019000	USD
CY2018	us-gaap	Multiemployer Plan Pension Insignificant Employer Contribution Cost MultiemployerPlanPensionInsignificantEmployerContributionCost	15152000	USD
CY2020	us-gaap	Multiemployer Plan Employer Contribution Cost MultiemployerPlanEmployerContributionCost	37403000	USD
CY2019	us-gaap	Multiemployer Plan Employer Contribution Cost MultiemployerPlanEmployerContributionCost	64386000	USD
CY2018	us-gaap	Multiemployer Plan Employer Contribution Cost MultiemployerPlanEmployerContributionCost	54724000	USD
CY2020	mtrx	Employee Stock Purchase Plan Maximum Annual Share Purchase Limited To Aggregate Market Value EmployeeStockPurchasePlanMaximumAnnualSharePurchaseLimitedToAggregateMarketValue	60000	USD
CY2020	mtrx	Employee Stock Purchase Plan Maximum Number Of Shares Available For Issuance EmployeeStockPurchasePlanMaximumNumberOfSharesAvailableForIssuance	1000000	shares
CY2020	mtrx	Employee Stock Purchase Plan Termination Date EmployeeStockPurchasePlanTerminationDate	2021-01-02
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
CY2018	us-gaap	Stock Issued During Period Shares Employee Stock Purchase Plans StockIssuedDuringPeriodSharesEmployeeStockPurchasePlans	21920	shares
CY2020	mtrx	Grossrevenues Grossrevenues	1107560000	USD
CY2020	us-gaap	Revenues Revenues	1100938000	USD
CY2020	us-gaap	Gross Profit GrossProfit	102176000	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	1421276000	USD
CY2019	us-gaap	Revenues Revenues	1416680000	USD
CY2019	us-gaap	Gross Profit GrossProfit	131951000	USD
CY2019	us-gaap	Restructuring Settlement And Impairment Provisions RestructuringSettlementAndImpairmentProvisions	0	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
CY2018	mtrx	Grossrevenues Grossrevenues	1097738000	USD
CY2018	us-gaap	Revenues Revenues	1091553000	USD
CY2018	us-gaap	Gross Profit GrossProfit	91936000	USD
CY2018	us-gaap	Restructuring Settlement And Impairment Provisions RestructuringSettlementAndImpairmentProvisions	17998000	USD
CY2018	us-gaap	Operating Income Loss OperatingIncomeLoss	-10479000	USD
CY2018Q2	us-gaap	Assets Assets	558033000	USD
CY2018	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	8711000	USD
CY2019Q2	us-gaap	Restructuring Reserve RestructuringReserve	0	USD
CY2018	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	20347000	USD
CY2020Q2	us-gaap	Noncurrent Assets NoncurrentAssets	182150000	USD
CY2019Q2	us-gaap	Noncurrent Assets NoncurrentAssets	216084000	USD
CY2018Q2	us-gaap	Noncurrent Assets NoncurrentAssets	200987000	USD
CY2020	us-gaap	Severance Costs1 SeveranceCosts1	8775000	USD
CY2020	us-gaap	Business Exit Costs1 BusinessExitCosts1	3710000	USD
CY2020	us-gaap	Impairment Of Intangible Assets Indefinitelived Excluding Goodwill ImpairmentOfIntangibleAssetsIndefinitelivedExcludingGoodwill	1525000	USD
CY2020Q1	us-gaap	Restructuring Settlement And Impairment Provisions RestructuringSettlementAndImpairmentProvisions	6559000	USD
CY2020	us-gaap	Restructuring Charges RestructuringCharges	14010000	USD
CY2020	us-gaap	Other Asset Impairment Charges OtherAssetImpairmentCharges	5215000	USD
CY2020	us-gaap	Payments For Restructuring PaymentsForRestructuring	-6392000	USD
CY2020Q2	us-gaap	Restructuring Reserve RestructuringReserve	2403000	USD
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
CY2019Q3	us-gaap	Restructuring Settlement And Impairment Provisions RestructuringSettlementAndImpairmentProvisions	0	USD
CY2019Q4	us-gaap	Restructuring Settlement And Impairment Provisions RestructuringSettlementAndImpairmentProvisions	38515000	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
CY2018Q3	us-gaap	Revenues Revenues	318511000	USD
CY2018Q4	us-gaap	Revenues Revenues	340568000	USD
CY2019Q1	us-gaap	Revenues Revenues	358887000	USD
CY2019Q2	us-gaap	Revenues Revenues	398714000	USD
CY2018Q3	us-gaap	Gross Profit GrossProfit	23421000	USD
CY2018Q4	us-gaap	Gross Profit GrossProfit	27886000	USD
CY2019Q1	us-gaap	Gross Profit GrossProfit	36906000	USD
CY2019Q2	us-gaap	Gross Profit GrossProfit	43738000	USD
CY2018Q3	us-gaap	Operating Income Loss OperatingIncomeLoss	2220000	USD
CY2018Q4	us-gaap	Operating Income Loss OperatingIncomeLoss	5527000	USD
CY2019Q1	us-gaap	Operating Income Loss OperatingIncomeLoss	12794000	USD
CY2019Q2	us-gaap	Operating Income Loss OperatingIncomeLoss	17389000	USD
CY2018Q3	us-gaap	Net Income Loss NetIncomeLoss	2305000	USD
CY2018Q4	us-gaap	Net Income Loss NetIncomeLoss	3932000	USD
CY2019Q1	us-gaap	Net Income Loss NetIncomeLoss	8933000	USD
CY2019Q2	us-gaap	Net Income Loss NetIncomeLoss	12812000	USD
CY2018Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.09
CY2018Q4	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.15
CY2019Q1	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.33
CY2019Q2	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.48
CY2018Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.08
CY2018Q4	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.14
CY2019Q1	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.33
CY2019Q2	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.47
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
CY2017Q2	us-gaap	Valuation Allowances And Reserves Balance ValuationAllowancesAndReservesBalance	11606000	USD
CY2018	us-gaap	Valuation Allowances And Reserves Charged To Cost And Expense ValuationAllowancesAndReservesChargedToCostAndExpense	1127000	USD
CY2018	us-gaap	Valuation Allowances And Reserves Charged To Other Accounts ValuationAllowancesAndReservesChargedToOtherAccounts	0	USD
CY2018	us-gaap	Valuation Allowances And Reserves Deductions ValuationAllowancesAndReservesDeductions	4768000	USD
CY2018Q2	us-gaap	Valuation Allowances And Reserves Balance ValuationAllowancesAndReservesBalance	7965000	USD

Files In Submission

Name	View Source	Status
0000866273-20-000109-index-headers.html	Edgar Link	pending
0000866273-20-000109-index.html	Edgar Link	pending
0000866273-20-000109.txt	Edgar Link	pending
0000866273-20-000109-xbrl.zip	Edgar Link	pending
exhibit1014.htm	Edgar Link	pending
exhibit1015.htm	Edgar Link	pending
exhibit21-mtrxx2020x06.htm	Edgar Link	pending
exhibit23-mtrxx2020x06.htm	Edgar Link	pending
exhibit311-mtrxx2020x0.htm	Edgar Link	pending
exhibit312-mtrxx202006.htm	Edgar Link	pending
exhibit321-mtrxx2020x0.htm	Edgar Link	pending
exhibit322-mtrxx2020x0.htm	Edgar Link	pending
exhibit95-mtrxx2020x06.htm	Edgar Link	pending
FilingSummary.xml	Edgar Link	unprocessable
Financial_Report.xlsx	Edgar Link	pending
MetaLinks.json	Edgar Link	pending
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$MTRX
MATRIX SERVICE CO Stock $mtrx

2020 Form 10-K Financial Statement

#000086627320000109 Filed on September 03, 2020

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$MTRX MATRIX SERVICE CO Stock $mtrx

2020 Form 10-K Financial Statement

#000086627320000109 Filed on September 03, 2020

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$MTRX
MATRIX SERVICE CO Stock $mtrx