$CMT
CORE MOLDING TECHNOLOGIES INC Stock $cmt

$cmt Overview Financials Valuation SEC Filings Company Website

2020 Form 10-K Financial Statement

#000102665521000003 Filed on March 11, 2021

Income Statement

Concept	2020	2019 Q4	2019
Revenue	$222.4M	$56.12M	$284.3M
YoY Change	-21.79%	-23.29%	5.49%
Cost Of Revenue	$187.9M	$52.74M	$262.8M
YoY Change	-28.5%	-20.89%	8.43%
Gross Profit	$34.47M	$3.382M	$21.51M
YoY Change	60.3%	-47.95%	-20.76%
Gross Profit Margin	15.5%	6.03%	7.56%
Selling, General & Admin	$24.08M	$7.503M	$28.93M
YoY Change	-16.76%	13.48%	3.94%
% of Gross Profit	69.86%	221.85%	134.54%
Research & Development	$1.200M		$1.200M
YoY Change	0.0%		16.28%
% of Gross Profit	3.48%		5.58%
Depreciation & Amortization	$11.66M	$2.676M	$10.38M
YoY Change	12.39%	17.42%	10.57%
% of Gross Profit	33.83%	79.12%	48.25%
Operating Expenses	$24.08M	$7.503M	$33.03M
YoY Change	-27.09%	-29.58%	9.24%
Operating Profit	$10.39M	-$4.121M	-$11.53M
YoY Change	-190.13%	-0.84%	271.87%
Interest Expense	$5.923M	-$1.266M	$4.144M
YoY Change	42.93%	83.74%	73.1%
% of Operating Profit	57.01%
Other Income/Expense, Net	-$5.843M	$23.00K	-$4.050M
YoY Change	44.27%	91.67%	-272.63%
Pretax Income	$4.547M	-$5.365M	-$15.58M
YoY Change	-129.19%	10.96%	186.04%
Income Tax	-$3.618M	$97.00K	-$355.0K
% Of Pretax Income	-79.57%
Net Earnings	$8.165M	-$5.462M	-$15.22M
YoY Change	-153.64%	38.56%	218.34%
Net Earnings / Revenue	3.67%	-9.73%	-5.35%
Basic Earnings Per Share	$0.98	-$0.69	-$1.94
Diluted Earnings Per Share	$0.98	-$0.69	-$1.94
COMMON SHARES
Basic Shares Outstanding	7.936M shares	8.269M shares	7.830M shares
Diluted Shares Outstanding	7.939M shares		7.830M shares

Balance Sheet

Concept	2020	2019 Q4	2019
SHORT-TERM ASSETS
Cash & Short-Term Investments	$4.131M	$1.856M	$1.856M
YoY Change	122.58%	-1.85%	-1.85%
Cash & Equivalents	$4.131M	$1.856M	$1.856M
Short-Term Investments
Other Short-Term Assets	$3.823M	$1.748M	$1.748M
YoY Change	118.71%	18.59%	18.59%
Inventory	$18.36M	$21.68M	$21.68M
Prepaid Expenses
Receivables	$28.14M	$32.42M	$33.31M
Other Receivables	$2.026M	$2.627M	$2.627M
Total Short-Term Assets	$56.48M	$61.23M	$61.23M
YoY Change	-7.75%	-23.76%	-23.76%
LONG-TERM ASSETS
Property, Plant & Equipment	$76.81M	$79.21M	$83.69M
YoY Change	-8.23%	-1.8%	3.76%
Goodwill		$17.38M
YoY Change		-19.09%
Intangibles		$13.46M
YoY Change		-12.65%
Long-Term Investments
YoY Change
Other Assets	$3.332M	$1.525M	$3.551M
YoY Change	-6.17%	-30.59%	6.0%
Total Long-Term Assets	$109.0M	$118.1M	$118.1M
YoY Change	-7.67%	-2.33%	-2.33%
TOTAL ASSETS
Total Short-Term Assets	$56.48M	$61.23M	$61.23M
Total Long-Term Assets	$109.0M	$118.1M	$118.1M
Total Assets	$165.5M	$179.3M	$179.3M
YoY Change	-7.7%	-10.88%	-10.88%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable	$16.99M	$19.91M	$19.91M
YoY Change	-14.65%	-21.77%	-21.77%
Accrued Expenses	$12.11M	$10.78M	$10.78M
YoY Change	12.43%	18.73%	18.73%
Deferred Revenue		$3.698M
YoY Change
Short-Term Debt	$0.00	$0.00	$0.00
YoY Change
Long-Term Debt Due	$2.955M	$49.45M	$49.45M
YoY Change	-94.02%	1430.99%	1430.99%
Total Short-Term Liabilities	$36.00M	$83.83M	$83.83M
YoY Change	-57.06%	108.59%	108.59%
LONG-TERM LIABILITIES
Long-Term Debt	$25.20M	$0.00	$0.00
YoY Change		-100.0%	-100.0%
Other Long-Term Liabilities	$10.38M	$3.119M	$11.05M
YoY Change	-6.0%	-54.92%	59.65%
Total Long-Term Liabilities	$35.58M	$3.119M	$11.05M
YoY Change	222.12%	-94.35%	-82.21%
TOTAL LIABILITIES
Total Short-Term Liabilities	$36.00M	$83.83M	$83.83M
Total Long-Term Liabilities	$35.58M	$3.119M	$11.05M
Total Liabilities	$71.58M	$94.88M	$94.88M
YoY Change	-24.56%	-7.23%	-7.23%
SHAREHOLDERS EQUITY
Retained Earnings		$76.71M
YoY Change		-16.56%
Common Stock		$34.85M
YoY Change		4.7%
Preferred Stock
YoY Change
Treasury Stock (at cost)		$28.50M
YoY Change		0.35%
Treasury Stock Shares		3.806M shares
Shareholders Equity	$93.93M	$84.43M	$84.43M
YoY Change
Total Liabilities & Shareholders Equity	$165.5M	$179.3M	$179.3M
YoY Change	-7.7%	-10.88%	-10.88%

Cashflow Statement

Concept	2020	2019 Q4	2019
OPERATING ACTIVITIES
Net Income	$8.165M	-$5.462M	-$15.22M
YoY Change	-153.64%	38.56%	218.34%
Depreciation, Depletion And Amortization	$11.66M	$2.676M	$10.38M
YoY Change	12.39%	17.42%	10.57%
Cash From Operating Activities	$28.16M	$12.73M	$16.70M
YoY Change	68.64%	-197.52%	-355.84%
INVESTING ACTIVITIES
Capital Expenditures	$3.683M	-$1.180M	$7.460M
YoY Change	-50.63%	13.46%	28.6%
Acquisitions
YoY Change
Other Investing Activities	$0.00	$0.00	$0.00
YoY Change		-100.0%	-100.0%
Cash From Investing Activities	-$3.683M	-$1.180M	-$7.460M
YoY Change	-50.63%	-25.69%	-89.16%
FINANCING ACTIVITIES
Cash Dividend Paid	$0.00		$0.00
YoY Change			-100.0%
Common Stock Issuance & Retirement, Net	$20.00K		$98.00K
YoY Change	-79.59%		-60.8%
Debt Paid & Issued, Net	$38.73M		$3.375M
YoY Change	1047.41%		-66.67%
Cash From Financing Activities	-$22.21M	-9.692M	-$9.276M
YoY Change	139.39%	-158.63%	-118.39%
NET CHANGE
Cash From Operating Activities	$28.16M	12.73M	$16.70M
Cash From Investing Activities	-$3.683M	-1.180M	-$7.460M
Cash From Financing Activities	-$22.21M	-9.692M	-$9.276M
Net Change In Cash	$2.275M	1.856M	-$35.00K
YoY Change	-6600.0%	-1.85%	-99.86%
FREE CASH FLOW
Cash From Operating Activities	$28.16M	$12.73M	$16.70M
Capital Expenditures	$3.683M	-$1.180M	$7.460M
Free Cash Flow	$24.48M	$13.91M	$9.241M
YoY Change	164.92%	-215.78%	-174.95%

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value	Unit
CY2020	dei	Entity Central Index Key EntityCentralIndexKey	0001026655
CY2020	dei	Document Type DocumentType	10-K
CY2020	dei	Current Fiscal Year End Date CurrentFiscalYearEndDate	--12-31
CY2020	dei	Entity Voluntary Filers EntityVoluntaryFilers	No
CY2019Q4	us-gaap	Preferred Stock Par Or Stated Value Per Share PreferredStockParOrStatedValuePerShare	0.01
CY2019Q4	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	0.01
CY2019Q4	us-gaap	Preferred Stock Shares Authorized PreferredStockSharesAuthorized	10000000	shares
CY2019Q4	us-gaap	Preferred Stock Shares Outstanding PreferredStockSharesOutstanding	0	shares
CY2019Q4	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	20000000	shares
CY2020	dei	Amendment Flag AmendmentFlag	false
CY2020	dei	Document Annual Report DocumentAnnualReport	true
CY2020	dei	Document Fiscal Period Focus DocumentFiscalPeriodFocus	FY
CY2020	dei	Entity File Number EntityFileNumber	001-12505
CY2020	dei	Entity Small Business EntitySmallBusiness	true
CY2020	dei	Entity Shell Company EntityShellCompany	false
CY2020Q4	us-gaap	Commitments And Contingencies CommitmentsAndContingencies		USD
CY2019Q4	us-gaap	Commitments And Contingencies CommitmentsAndContingencies		USD
CY2020Q4	us-gaap	Operating Lease Liability Current Statement Of Financial Position Extensible List OperatingLeaseLiabilityCurrentStatementOfFinancialPositionExtensibleList	us-gaap:OtherAccruedLiabilitiesCurrent
CY2019Q4	us-gaap	Operating Lease Liability Current Statement Of Financial Position Extensible List OperatingLeaseLiabilityCurrentStatementOfFinancialPositionExtensibleList	us-gaap:OtherAccruedLiabilitiesCurrent
CY2020Q4	us-gaap	Operating Lease Liability Noncurrent Statement Of Financial Position Extensible List OperatingLeaseLiabilityNoncurrentStatementOfFinancialPositionExtensibleList	us-gaap:OtherLiabilitiesNoncurrent
CY2019Q4	us-gaap	Operating Lease Liability Noncurrent Statement Of Financial Position Extensible List OperatingLeaseLiabilityNoncurrentStatementOfFinancialPositionExtensibleList	us-gaap:OtherLiabilitiesNoncurrent
CY2020	us-gaap	Multiemployer Plan Type Extensible List MultiemployerPlanTypeExtensibleList	us-gaap:PensionPlansDefinedBenefitMember
CY2020	us-gaap	Multiemployer Plan Pension Significant Collective Bargaining Arrangement Extensible List MultiemployerPlanPensionSignificantCollectiveBargainingArrangementExtensibleList	cmt:InternationalAssociationofMachinistsAndAerospaceWorkersMember
CY2020	us-gaap	Multiemployer Plan Sponsor Location Extensible List MultiemployerPlanSponsorLocationExtensibleList	us-gaap:DomesticPlanMember
CY2020	us-gaap	Multiemployer Plan Pension Significant Funded Status Fixed List MultiemployerPlanPensionSignificantFundedStatusFixedList	Less than 65 percent
CY2020	us-gaap	Multiemployer Plan Pension Significant Name Extensible List MultiemployerPlanPensionSignificantNameExtensibleList	cmt:InternationalAssociationofMachinistsAndAerospaceWorkersNationalPensionFundNationalPensionPlanMember
CY2020	us-gaap	Multiemployer Plan Pension Significant Employer Identification Number MultiemployerPlanPensionSignificantEmployerIdentificationNumber	516031295
CY2020	us-gaap	Multiemployer Plan Pension Significant Certified Zone Status Fixed List MultiemployerPlanPensionSignificantCertifiedZoneStatusFixedList	Red
CY2019	us-gaap	Multiemployer Plan Pension Significant Certified Zone Status Fixed List MultiemployerPlanPensionSignificantCertifiedZoneStatusFixedList	Red
CY2020	us-gaap	Defined Benefit Plan Plan Name Extensible List DefinedBenefitPlanPlanNameExtensibleList	cmt:NavistarsPostRetirementHealthAndLifeInsuranceBenefitPlanMember
CY2020Q4	us-gaap	Defined Benefit Plan Type Extensible List DefinedBenefitPlanTypeExtensibleList	us-gaap:OtherPostretirementBenefitPlansDefinedBenefitMember
CY2019Q4	us-gaap	Defined Benefit Plan Sponsor Location Extensible List DefinedBenefitPlanSponsorLocationExtensibleList	us-gaap:DomesticPlanMember
CY2020	dei	Document Period End Date DocumentPeriodEndDate	2020-12-31
CY2020	dei	Document Fiscal Year Focus DocumentFiscalYearFocus	2020
CY2020	dei	Document Transition Report DocumentTransitionReport	false
CY2020	dei	Entity Registrant Name EntityRegistrantName	CORE MOLDING TECHNOLOGIES, INC
CY2020	dei	Entity Incorporation State Country Code EntityIncorporationStateCountryCode	DE
CY2020	dei	Entity Tax Identification Number EntityTaxIdentificationNumber	31-1481870
CY2020	dei	Entity Address Address Line1 EntityAddressAddressLine1	800 Manor Park Drive
CY2020	dei	Entity Address City Or Town EntityAddressCityOrTown	Columbus
CY2020	dei	Entity Address State Or Province EntityAddressStateOrProvince	OH
CY2020	dei	Entity Address Postal Zip Code EntityAddressPostalZipCode	43228-0183
CY2020	dei	City Area Code CityAreaCode	614
CY2020	dei	Local Phone Number LocalPhoneNumber	870-5000
CY2020	dei	Entity Well Known Seasoned Issuer EntityWellKnownSeasonedIssuer	No
CY2020	dei	Entity Current Reporting Status EntityCurrentReportingStatus	Yes
CY2020	dei	Entity Interactive Data Current EntityInteractiveDataCurrent	Yes
CY2020	dei	Entity Filer Category EntityFilerCategory	Non-accelerated Filer
CY2020	dei	Entity Emerging Growth Company EntityEmergingGrowthCompany	false
CY2020	dei	Icfr Auditor Attestation Flag IcfrAuditorAttestationFlag	false
CY2020Q2	dei	Entity Public Float EntityPublicFloat	22061000	USD
CY2020	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	4547000	USD
CY2019	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	-15578000	USD
CY2018	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	-5446000	USD
CY2020	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	-5713000	USD
CY2019	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	705000	USD
CY2018	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	1048000	USD
CY2020	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	2095000	USD
CY2019	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-1060000	USD
CY2018	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-1712000	USD
CY2020	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	-3618000	USD
CY2018	us-gaap	Interest Income Expense Nonoperating Net InterestIncomeExpenseNonoperatingNet	2394000	USD
CY2020	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	5843000	USD
CY2019	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	4050000	USD
CY2018	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	2346000	USD
CY2020	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	222356000	USD
CY2019	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	284290000	USD
CY2018	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	269485000	USD
CY2020	us-gaap	Cost Of Revenue CostOfRevenue	187882000	USD
CY2019	us-gaap	Cost Of Revenue CostOfRevenue	262784000	USD
CY2018	us-gaap	Cost Of Revenue CostOfRevenue	242344000	USD
CY2020	us-gaap	Gross Profit GrossProfit	34474000	USD
CY2019	us-gaap	Gross Profit GrossProfit	21506000	USD
CY2018	us-gaap	Gross Profit GrossProfit	27141000	USD
CY2020	us-gaap	Selling General And Administrative Expense SellingGeneralAndAdministrativeExpense	24084000	USD
CY2019	us-gaap	Selling General And Administrative Expense SellingGeneralAndAdministrativeExpense	28934000	USD
CY2018	us-gaap	Selling General And Administrative Expense SellingGeneralAndAdministrativeExpense	27838000	USD
CY2020	us-gaap	Goodwill Impairment Loss GoodwillImpairmentLoss	0	USD
CY2019	us-gaap	Goodwill Impairment Loss GoodwillImpairmentLoss	4100000	USD
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CY2019	us-gaap	Operating Expenses OperatingExpenses	33034000	USD
CY2018	us-gaap	Operating Expenses OperatingExpenses	30241000	USD
CY2020	us-gaap	Operating Income Loss OperatingIncomeLoss	10390000	USD
CY2019	us-gaap	Operating Income Loss OperatingIncomeLoss	-11528000	USD
CY2018	us-gaap	Operating Income Loss OperatingIncomeLoss	-3100000	USD
CY2020	us-gaap	Defined Benefit Plan Net Periodic Benefit Cost DefinedBenefitPlanNetPeriodicBenefitCost	-80000	USD
CY2019	us-gaap	Defined Benefit Plan Net Periodic Benefit Cost DefinedBenefitPlanNetPeriodicBenefitCost	-94000	USD
CY2018	us-gaap	Defined Benefit Plan Net Periodic Benefit Cost DefinedBenefitPlanNetPeriodicBenefitCost	-48000	USD
CY2020	us-gaap	Interest Income Expense Nonoperating Net InterestIncomeExpenseNonoperatingNet	5923000	USD
CY2019	us-gaap	Interest Income Expense Nonoperating Net InterestIncomeExpenseNonoperatingNet	4144000	USD
CY2019	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	-355000	USD
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CY2020	us-gaap	Net Income Loss NetIncomeLoss	8165000	USD
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CY2020	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.98
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CY2019	us-gaap	Other Comprehensive Income Loss Amortization Adjustment From Aoci Pension And Other Postretirement Benefit Plans For Net Prior Service Cost Credit Before Tax OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditBeforeTax	-496000	USD
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CY2019	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Net Unamortized Gain Loss Arising During Period Before Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansNetUnamortizedGainLossArisingDuringPeriodBeforeTax	-985000	USD
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CY2020	us-gaap	Other Comprehensive Income Loss Amortization Adjustment From Aoci Pension And Other Postretirement Benefit Plans For Net Prior Service Cost Credit Before Tax OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditBeforeTax	-496000	USD
CY2019	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-1.94
CY2018	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-0.62
CY2020	us-gaap	Net Income Loss NetIncomeLoss	8165000	USD
CY2019	us-gaap	Net Income Loss NetIncomeLoss	-15223000	USD
CY2018	us-gaap	Net Income Loss NetIncomeLoss	-4782000	USD
CY2020	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Net Unamortized Gain Loss Arising During Period Before Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansNetUnamortizedGainLossArisingDuringPeriodBeforeTax	283000	USD
CY2020	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansTax	27000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansTax	313000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansTax	123000	USD
CY2020	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	8170000	USD
CY2019	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	-15970000	USD
CY2018	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	-4735000	USD
CY2020Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	4131000	USD
CY2019Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	1856000	USD
CY2020Q4	us-gaap	Accounts Receivable Net Current AccountsReceivableNetCurrent	27584000	USD
CY2019Q4	us-gaap	Accounts Receivable Net Current AccountsReceivableNetCurrent	32424000	USD
CY2020Q4	us-gaap	Inventory Finished Goods InventoryFinishedGoods	11640000	USD
CY2019Q4	us-gaap	Inventory Finished Goods InventoryFinishedGoods	13041000	USD
CY2020Q4	us-gaap	Inventory Work In Process InventoryWorkInProcess	1679000	USD
CY2019Q4	us-gaap	Inventory Work In Process InventoryWorkInProcess	1818000	USD
CY2020Q4	us-gaap	Inventory Raw Materials InventoryRawMaterials	5041000	USD
CY2019Q4	us-gaap	Inventory Raw Materials InventoryRawMaterials	6823000	USD
CY2020Q4	us-gaap	Inventory Net InventoryNet	18360000	USD
CY2019Q4	us-gaap	Inventory Net InventoryNet	21682000	USD
CY2020Q4	us-gaap	Contract With Customer Asset Net ContractWithCustomerAssetNet	554000	USD
CY2019Q4	us-gaap	Contract With Customer Asset Net ContractWithCustomerAssetNet	888000	USD
CY2020Q4	us-gaap	Value Added Tax Receivable ValueAddedTaxReceivable	2026000	USD
CY2019Q4	us-gaap	Value Added Tax Receivable ValueAddedTaxReceivable	653000	USD
CY2020Q4	us-gaap	Prepaid Expense And Other Assets Current PrepaidExpenseAndOtherAssetsCurrent	3823000	USD
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CY2020Q4	us-gaap	Assets Current AssetsCurrent	56478000	USD
CY2019Q4	us-gaap	Assets Current AssetsCurrent	61225000	USD
CY2020Q4	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	2754000	USD
CY2019Q4	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	4484000	USD
CY2020Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	74052000	USD
CY2019Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	79206000	USD
CY2020Q4	us-gaap	Deferred Income Tax Assets Net DeferredIncomeTaxAssetsNet	929000	USD
CY2019Q4	us-gaap	Deferred Income Tax Assets Net DeferredIncomeTaxAssetsNet	2026000	USD
CY2020Q4	us-gaap	Goodwill Goodwill	17376000	USD
CY2019Q4	us-gaap	Goodwill Goodwill	17376000	USD
CY2020Q4	us-gaap	Intangible Assets Net Excluding Goodwill IntangibleAssetsNetExcludingGoodwill	11516000	USD
CY2019Q4	us-gaap	Intangible Assets Net Excluding Goodwill IntangibleAssetsNetExcludingGoodwill	13464000	USD
CY2020Q4	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	2403000	USD
CY2019Q4	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	1525000	USD
CY2020Q4	us-gaap	Assets Assets	165508000	USD
CY2019Q4	us-gaap	Assets Assets	179306000	USD
CY2020Q4	us-gaap	Loans Payable Current LoansPayableCurrent	2535000	USD
CY2019Q4	us-gaap	Loans Payable Current LoansPayableCurrent	37443000	USD
CY2020Q4	us-gaap	Lines Of Credit Current LinesOfCreditCurrent	420000	USD
CY2020Q4	us-gaap	Accounts Payable Current AccountsPayableCurrent	16994000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Net Of Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax	462000	USD
CY2019	us-gaap	Treasury Stock Value Acquired Par Value Method TreasuryStockValueAcquiredParValueMethod	98000	USD
CY2018	us-gaap	Treasury Stock Value Acquired Par Value Method TreasuryStockValueAcquiredParValueMethod	250000	USD
CY2019Q4	us-gaap	Lines Of Credit Current LinesOfCreditCurrent	12008000	USD
CY2018	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Vested In Period Fair Value1 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsVestedInPeriodFairValue1	1000	USD
CY2019Q4	us-gaap	Accounts Payable Current AccountsPayableCurrent	19910000	USD
CY2020Q4	us-gaap	Taxes Payable Current TaxesPayableCurrent	2613000	USD
CY2019Q4	us-gaap	Taxes Payable Current TaxesPayableCurrent	331000	USD
CY2020Q4	us-gaap	Contract With Customer Liability Current ContractWithCustomerLiabilityCurrent	1319000	USD
CY2019Q4	us-gaap	Contract With Customer Liability Current ContractWithCustomerLiabilityCurrent	3698000	USD
CY2020Q4	us-gaap	Postemployment Benefits Liability Current PostemploymentBenefitsLiabilityCurrent	1286000	USD
CY2019Q4	us-gaap	Postemployment Benefits Liability Current PostemploymentBenefitsLiabilityCurrent	1233000	USD
CY2020Q4	us-gaap	Employee Related Liabilities Current EmployeeRelatedLiabilitiesCurrent	8305000	USD
CY2019Q4	us-gaap	Employee Related Liabilities Current EmployeeRelatedLiabilitiesCurrent	5515000	USD
CY2020Q4	us-gaap	Other Accrued Liabilities Current OtherAccruedLiabilitiesCurrent	2523000	USD
CY2019Q4	us-gaap	Other Accrued Liabilities Current OtherAccruedLiabilitiesCurrent	4027000	USD
CY2020Q4	us-gaap	Liabilities Current LiabilitiesCurrent	35995000	USD
CY2019Q4	us-gaap	Liabilities Current LiabilitiesCurrent	83834000	USD
CY2020Q4	us-gaap	Other Liabilities Noncurrent OtherLiabilitiesNoncurrent	2560000	USD
CY2019Q4	us-gaap	Other Liabilities Noncurrent OtherLiabilitiesNoncurrent	3119000	USD
CY2020Q4	us-gaap	Long Term Debt LongTermDebt	25198000	USD
CY2019Q4	us-gaap	Long Term Debt LongTermDebt	0	USD
CY2020Q4	us-gaap	Postemployment Benefits Liability Noncurrent PostemploymentBenefitsLiabilityNoncurrent	7823000	USD
CY2019Q4	us-gaap	Postemployment Benefits Liability Noncurrent PostemploymentBenefitsLiabilityNoncurrent	7927000	USD
CY2020Q4	us-gaap	Liabilities Liabilities	71576000	USD
CY2019Q4	us-gaap	Liabilities Liabilities	94880000	USD
CY2020Q4	us-gaap	Preferred Stock Par Or Stated Value Per Share PreferredStockParOrStatedValuePerShare	0.01
CY2020Q4	us-gaap	Preferred Stock Shares Authorized PreferredStockSharesAuthorized	10000000	shares
CY2020Q4	us-gaap	Preferred Stock Shares Outstanding PreferredStockSharesOutstanding	0	shares
CY2020Q4	us-gaap	Preferred Stock Value PreferredStockValue	0	USD
CY2019Q4	us-gaap	Preferred Stock Value PreferredStockValue	0	USD
CY2020Q4	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	0.01
CY2020Q4	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	20000000	shares
CY2020Q4	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	7980516	shares
CY2019Q4	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	7877945	shares
CY2020Q4	us-gaap	Common Stock Value CommonStockValue	80000	USD
CY2019Q4	us-gaap	Common Stock Value CommonStockValue	79000	USD
CY2020Q4	us-gaap	Additional Paid In Capital Common Stock AdditionalPaidInCapitalCommonStock	36127000	USD
CY2019Q4	us-gaap	Additional Paid In Capital Common Stock AdditionalPaidInCapitalCommonStock	34772000	USD
CY2020Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	1375000	USD
CY2019Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	1370000	USD
CY2020Q4	us-gaap	Treasury Stock Shares TreasuryStockShares	3810929	shares
CY2019Q4	us-gaap	Treasury Stock Shares TreasuryStockShares	3806355	shares
CY2020Q4	us-gaap	Treasury Stock Value TreasuryStockValue	28521000	USD
CY2019Q4	us-gaap	Treasury Stock Value TreasuryStockValue	28501000	USD
CY2020Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	84871000	USD
CY2019Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	76706000	USD
CY2020Q4	us-gaap	Stockholders Equity StockholdersEquity	93932000	USD
CY2019Q4	us-gaap	Stockholders Equity StockholdersEquity	84426000	USD
CY2020Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	165508000	USD
CY2019Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	179306000	USD
CY2017Q4	us-gaap	Stockholders Equity StockholdersEquity	102962000	USD
CY2018	us-gaap	Net Income Loss NetIncomeLoss	-4782000	USD
CY2018	us-gaap	Dividends Dividends	792000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansTax	123000	USD
CY2018	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	1743000	USD
CY2018Q4	us-gaap	Stockholders Equity StockholdersEquity	98929000	USD
CY2019	us-gaap	Net Income Loss NetIncomeLoss	-15223000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansTax	313000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Net Of Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax	1168000	USD
CY2020	us-gaap	Net Income Loss NetIncomeLoss	8165000	USD
CY2019	us-gaap	Net Income Loss NetIncomeLoss	-15223000	USD
CY2020	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	3683000	USD
CY2019	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	7460000	USD
CY2019	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Vested In Period Fair Value1 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsVestedInPeriodFairValue1	1000	USD
CY2019	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	1564000	USD
CY2019Q4	us-gaap	Stockholders Equity StockholdersEquity	84426000	USD
CY2020	us-gaap	Net Income Loss NetIncomeLoss	8165000	USD
CY2020	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansTax	27000	USD
CY2020	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Net Of Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax	-186000	USD
CY2020	us-gaap	Treasury Stock Value Acquired Par Value Method TreasuryStockValueAcquiredParValueMethod	20000	USD
CY2020	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Vested In Period Fair Value1 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsVestedInPeriodFairValue1	1000	USD
CY2020	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	1355000	USD
CY2020Q4	us-gaap	Stockholders Equity StockholdersEquity	93932000	USD
CY2018	us-gaap	Net Income Loss NetIncomeLoss	-4782000	USD
CY2020	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	11662000	USD
CY2019	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	10376000	USD
CY2018	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	9384000	USD
CY2020	us-gaap	Deferred Income Taxes And Tax Credits DeferredIncomeTaxesAndTaxCredits	1097000	USD
CY2019	us-gaap	Deferred Income Taxes And Tax Credits DeferredIncomeTaxesAndTaxCredits	-873000	USD
CY2018	us-gaap	Deferred Income Taxes And Tax Credits DeferredIncomeTaxesAndTaxCredits	-1739000	USD
CY2020	us-gaap	Goodwill Impairment Loss GoodwillImpairmentLoss	0	USD
CY2019	us-gaap	Goodwill Impairment Loss GoodwillImpairmentLoss	4100000	USD
CY2018	us-gaap	Goodwill Impairment Loss GoodwillImpairmentLoss	2403000	USD
CY2020	cmt	Other Comprehensive Income Derivative Instruments Net Of Tax Adjustment To Reconcile Net Income To Cash Provided By Operating Activities OtherComprehensiveIncomeDerivativeInstrumentsNetOfTaxAdjustmentToReconcileNetIncomeToCashProvidedByOperatingActivities	0	USD
CY2019	cmt	Other Comprehensive Income Derivative Instruments Net Of Tax Adjustment To Reconcile Net Income To Cash Provided By Operating Activities OtherComprehensiveIncomeDerivativeInstrumentsNetOfTaxAdjustmentToReconcileNetIncomeToCashProvidedByOperatingActivities	-67000	USD
CY2018	cmt	Other Comprehensive Income Derivative Instruments Net Of Tax Adjustment To Reconcile Net Income To Cash Provided By Operating Activities OtherComprehensiveIncomeDerivativeInstrumentsNetOfTaxAdjustmentToReconcileNetIncomeToCashProvidedByOperatingActivities	-159000	USD
CY2020	us-gaap	Share Based Compensation ShareBasedCompensation	1355000	USD
CY2019	us-gaap	Share Based Compensation ShareBasedCompensation	1564000	USD
CY2018	us-gaap	Share Based Compensation ShareBasedCompensation	1743000	USD
CY2020	us-gaap	Foreign Currency Transaction Gain Loss Unrealized ForeignCurrencyTransactionGainLossUnrealized	-237000	USD
CY2019	us-gaap	Foreign Currency Transaction Gain Loss Unrealized ForeignCurrencyTransactionGainLossUnrealized	-33000	USD
CY2018	us-gaap	Foreign Currency Transaction Gain Loss Unrealized ForeignCurrencyTransactionGainLossUnrealized	-5000	USD
CY2020	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	-4840000	USD
CY2019	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	-13044000	USD
CY2018	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	17945000	USD
CY2020	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	-3322000	USD
CY2019	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	-4083000	USD
CY2018	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	5783000	USD
CY2020	us-gaap	Increase Decrease In Prepaid Deferred Expense And Other Assets IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets	2018000	USD
CY2019	us-gaap	Increase Decrease In Prepaid Deferred Expense And Other Assets IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets	-2587000	USD
CY2018	us-gaap	Increase Decrease In Prepaid Deferred Expense And Other Assets IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets	528000	USD
CY2020	us-gaap	Increase Decrease In Accounts Payable IncreaseDecreaseInAccountsPayable	-3142000	USD
CY2019	us-gaap	Increase Decrease In Accounts Payable IncreaseDecreaseInAccountsPayable	-4849000	USD
CY2018	us-gaap	Increase Decrease In Accounts Payable IncreaseDecreaseInAccountsPayable	7822000	USD
CY2020	us-gaap	Increase Decrease In Accrued Liabilities And Other Operating Liabilities IncreaseDecreaseInAccruedLiabilitiesAndOtherOperatingLiabilities	2910000	USD
CY2019	us-gaap	Increase Decrease In Accrued Liabilities And Other Operating Liabilities IncreaseDecreaseInAccruedLiabilitiesAndOtherOperatingLiabilities	3420000	USD
CY2018	us-gaap	Increase Decrease In Accrued Liabilities And Other Operating Liabilities IncreaseDecreaseInAccruedLiabilitiesAndOtherOperatingLiabilities	3122000	USD
CY2020	us-gaap	Increase Decrease In Postretirement Obligations IncreaseDecreaseInPostretirementObligations	-264000	USD
CY2019	us-gaap	Increase Decrease In Postretirement Obligations IncreaseDecreaseInPostretirementObligations	-1628000	USD
CY2018	us-gaap	Increase Decrease In Postretirement Obligations IncreaseDecreaseInPostretirementObligations	-389000	USD
CY2020	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	28164000	USD
CY2019	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	16701000	USD
CY2018	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	-6528000	USD
CY2018	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	5801000	USD
CY2020	cmt	Business Combination Purchase Price Allocated BusinessCombinationPurchasePriceAllocated	0	USD
CY2018	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	10125000	USD
CY2020	us-gaap	Payments Of Financing Costs PaymentsOfFinancingCosts	2038000	USD
CY2019	cmt	Business Combination Purchase Price Allocated BusinessCombinationPurchasePriceAllocated	0	USD
CY2018	cmt	Business Combination Purchase Price Allocated BusinessCombinationPurchasePriceAllocated	-63005000	USD
CY2019	us-gaap	Payments Of Financing Costs PaymentsOfFinancingCosts	435000	USD
CY2020	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-3683000	USD
CY2019	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-7460000	USD
CY2018	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-68806000	USD
CY2020	us-gaap	Proceeds From Lines Of Credit ProceedsFromLinesOfCredit	56793000	USD
CY2019	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	3375000	USD
CY2019	us-gaap	Proceeds From Lines Of Credit ProceedsFromLinesOfCredit	194414000	USD
CY2018	us-gaap	Proceeds From Lines Of Credit ProceedsFromLinesOfCredit	133848000	USD
CY2020	us-gaap	Repayments Of Lines Of Credit RepaymentsOfLinesOfCredit	68381000	USD
CY2019	us-gaap	Repayments Of Lines Of Credit RepaymentsOfLinesOfCredit	199782000	USD
CY2018	us-gaap	Repayments Of Lines Of Credit RepaymentsOfLinesOfCredit	116473000	USD
CY2020	us-gaap	Proceeds From Long Term Lines Of Credit ProceedsFromLongTermLinesOfCredit	30165000	USD
CY2019	us-gaap	Proceeds From Long Term Lines Of Credit ProceedsFromLongTermLinesOfCredit	0	USD
CY2018	us-gaap	Proceeds From Long Term Lines Of Credit ProceedsFromLongTermLinesOfCredit	45000000	USD
CY2020	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	38725000	USD
CY2018	us-gaap	Payments Of Financing Costs PaymentsOfFinancingCosts	763000	USD
CY2020	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	20000	USD
CY2019	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	98000	USD
CY2018	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	250000	USD
CY2020	us-gaap	Payments Of Dividends PaymentsOfDividends	0	USD
CY2019	us-gaap	Payments Of Dividends PaymentsOfDividends	0	USD
CY2018	us-gaap	Payments Of Dividends PaymentsOfDividends	792000	USD
CY2020	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-22206000	USD
CY2019	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-9276000	USD
CY2018	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	50445000	USD
CY2020	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Excluding Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseExcludingExchangeRateEffect	2275000	USD
CY2019	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Excluding Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseExcludingExchangeRateEffect	-35000	USD
CY2018	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Excluding Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseExcludingExchangeRateEffect	-24889000	USD
CY2019Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	1856000	USD
CY2018Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	1891000	USD
CY2017Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	26780000	USD
CY2020Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	4131000	USD
CY2019Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	1856000	USD
CY2018Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	1891000	USD
CY2020	us-gaap	Interest Paid Net InterestPaidNet	3854000	USD
CY2019	us-gaap	Interest Paid Net InterestPaidNet	3869000	USD
CY2018	us-gaap	Interest Paid Net InterestPaidNet	2261000	USD
CY2020	us-gaap	Income Taxes Paid IncomeTaxesPaid	570000	USD
CY2019	us-gaap	Income Taxes Paid IncomeTaxesPaid	1284000	USD
CY2018	us-gaap	Income Taxes Paid IncomeTaxesPaid	1033000	USD
CY2020	us-gaap	Capital Expenditures Incurred But Not Yet Paid CapitalExpendituresIncurredButNotYetPaid	147000	USD
CY2019	us-gaap	Capital Expenditures Incurred But Not Yet Paid CapitalExpendituresIncurredButNotYetPaid	158000	USD
CY2018	us-gaap	Capital Expenditures Incurred But Not Yet Paid CapitalExpendituresIncurredButNotYetPaid	871000	USD
CY2020	us-gaap	Number Of Operating Segments NumberOfOperatingSegments	1	Segments
CY2020	us-gaap	Number Of Reportable Segments NumberOfReportableSegments	2	Segments
CY2020Q4	us-gaap	Self Insurance Reserve SelfInsuranceReserve	933000	USD
CY2020	us-gaap	Use Of Estimates UseOfEstimates	<div id="TextBlockContainer1639" style="position:relative;font-family:Times New Roman;font-size:13.28px;color:#000000;line-height:normal;width:697px;height:126px;display:inline-block;border:inherit;margin-left:-2px;margin-right:-2px;"><div id="a8920" style="position:absolute;font-weight:bold;font-style:normal;left:4.427px;top:0px;">Use of Estimates</div><div id="a8921" style="position:absolute;font-weight:normal;font-style:normal;left:99.813px;top:0px;"><div style="display:inline-block;width:4.16px"> </div>- The preparation<div style="display:inline-block;width:5.74px"> </div>of financial statements<div style="display:inline-block;width:6.03px"> </div>in conformity with<div style="display:inline-block;width:5.85px"> </div>accounting principles generally<div style="display:inline-block;width:6.35px"> </div>accepted in the </div><div id="a8926" style="position:absolute;font-weight:normal;font-style:normal;left:4.427px;top:18.4px;">United States of America requires management to make estimates and assumptions that affect the reported amounts of<div style="display:inline-block;width:1.77px"> </div>assets and </div><div id="a8928" style="position:absolute;font-weight:normal;font-style:normal;left:4.427px;top:36.8px;">liabilities, disclosures of<div style="display:inline-block;width:6.06px"> </div>contingent assets and<div style="display:inline-block;width:6.35px"> </div>liabilities, and reported<div style="display:inline-block;width:6.32px"> </div>amounts of revenues<div style="display:inline-block;width:6.04px"> </div>and expenses during<div style="display:inline-block;width:5.97px"> </div>the reporting </div><div id="a8930" style="position:absolute;font-weight:normal;font-style:normal;left:4.427px;top:55.2px;">period.<div style="display:inline-block;width:8.99px"> </div>Significant estimates relate<div style="display:inline-block;width:6.74px"> </div>to allowances for<div style="display:inline-block;width:6.63px"> </div>doubtful accounts, inventory<div style="display:inline-block;width:6.72px"> </div>reserves, self-insurance<div style="display:inline-block;width:6.03px"> </div>reserves related<div style="display:inline-block;width:5.85px"> </div>to </div><div id="a8933" style="position:absolute;font-weight:normal;font-style:normal;left:4.427px;top:73.6px;">healthcare and workers compensation,<div style="display:inline-block;width:5.42px"> </div>deferred taxes, post retirement<div style="display:inline-block;width:5.22px"> </div>benefits, progress billings for<div style="display:inline-block;width:5.41px"> </div>tooling, goodwill and long-</div><div id="a8936" style="position:absolute;font-weight:normal;font-style:normal;left:4.427px;top:92px;">lived assets.<div style="display:inline-block;width:8.14px"> </div>Actual results could<div style="display:inline-block;width:5.63px"> </div>differ from those<div style="display:inline-block;width:5.62px"> </div>estimates</div><div id="a8937" style="position:absolute;font-weight:normal;font-style:normal;left:333.773px;top:92px;">, due to<div style="display:inline-block;width:5.5px"> </div>the uncertainty around<div style="display:inline-block;width:5.97px"> </div>the magnitude and<div style="display:inline-block;width:5.74px"> </div>duration of the </div><div id="a8938" style="position:absolute;font-weight:normal;font-style:normal;left:4.427px;top:110.4px;">COVID-19 pandemic, as well as other factors.</div></div>
CY2020Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	4131000	USD
CY2019Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	1856000	USD
CY2020Q4	us-gaap	Allowance For Doubtful Accounts Receivable AllowanceForDoubtfulAccountsReceivable	41000	USD
CY2019Q4	us-gaap	Allowance For Doubtful Accounts Receivable AllowanceForDoubtfulAccountsReceivable	50000	USD
CY2020Q4	cmt	Accounts Receivable Allowance For Credit Loss Chargebacks AccountsReceivableAllowanceForCreditLossChargebacks	179000	USD
CY2019Q4	cmt	Accounts Receivable Allowance For Credit Loss Chargebacks AccountsReceivableAllowanceForCreditLossChargebacks	476000	USD
CY2020Q4	us-gaap	Inventory Valuation Reserves InventoryValuationReserves	546000	USD
CY2019Q4	us-gaap	Inventory Valuation Reserves InventoryValuationReserves	898000	USD
CY2019	us-gaap	Contract With Customer Liability Cumulative Catch Up Adjustment To Revenue Modification Of Contract ContractWithCustomerLiabilityCumulativeCatchUpAdjustmentToRevenueModificationOfContract	1240000	USD
CY2020	us-gaap	Contract With Customer Liability Cumulative Catch Up Adjustment To Revenue Modification Of Contract ContractWithCustomerLiabilityCumulativeCatchUpAdjustmentToRevenueModificationOfContract	6828000	USD
CY2020	us-gaap	Impairment Of Intangible Assets Finitelived ImpairmentOfIntangibleAssetsFinitelived	0	USD
CY2019	us-gaap	Impairment Of Intangible Assets Finitelived ImpairmentOfIntangibleAssetsFinitelived	0	USD
CY2018	us-gaap	Impairment Of Intangible Assets Finitelived ImpairmentOfIntangibleAssetsFinitelived	0	USD
CY2018	us-gaap	Goodwill Impairment Loss GoodwillImpairmentLoss	2403000	USD
CY2019Q4	us-gaap	Reporting Unit Percentage Of Fair Value In Excess Of Carrying Amount ReportingUnitPercentageOfFairValueInExcessOfCarryingAmount	0.23	pure
CY2019Q4	us-gaap	Self Insurance Reserve SelfInsuranceReserve	1203000	USD
CY2020Q4	us-gaap	Postemployment Benefits Liability Current And Noncurrent PostemploymentBenefitsLiabilityCurrentAndNoncurrent	9109000	USD
CY2019Q4	us-gaap	Postemployment Benefits Liability Current And Noncurrent PostemploymentBenefitsLiabilityCurrentAndNoncurrent	9160000	USD
CY2020	us-gaap	Concentration Risk Credit Risk ConcentrationRiskCreditRisk	<div id="TextBlockContainer1679" style="position:relative;font-family:Times New Roman;font-size:13.28px;color:#000000;line-height:normal;width:697px;height:402px;display:inline-block;border:inherit;margin-left:-2px;margin-right:-2px;"><div id="a9462" style="position:absolute;font-weight:bold;font-style:normal;left:4.427px;top:0px;">Concentration Risks</div><div id="a9463" style="position:absolute;font-weight:normal;font-style:normal;left:120.773px;top:0px;"><div style="display:inline-block;width:3.36px"> </div>- The Company has concentration risk related to significant amounts of sales and accounts receivable with </div><div id="a9469" style="position:absolute;font-weight:normal;font-style:normal;left:4.427px;top:18.4px;">certain customers.<div style="display:inline-block;width:6.75px"> </div>The Company had five major customers during the year end December<div style="display:inline-block;width:4.7px"> </div>31, 2020, </div><div id="a9469_96_25" style="position:absolute;left:543.533px;top:18.4px;">Navistar, Volvo, PACCAR, </div><div id="a9473" style="position:absolute;left:4.427px;top:36.8px;">BRP and UFP</div><div id="a9473_11_115" style="position:absolute;font-weight:normal;font-style:normal;left:78.059px;top:36.8px;">.<div style="display:inline-block;width:6.76px"> </div>Major customers are defined as customers whose current year sales individually consist of more<div style="display:inline-block;width:4.73px"> </div>than ten percent </div><div id="a9476" style="position:absolute;font-weight:normal;font-style:normal;left:4.427px;top:55.2px;">of total sales<div style="display:inline-block;width:5.84px"> </div>during any annual<div style="display:inline-block;width:6.36px"> </div>or interim reporting<div style="display:inline-block;width:5.98px"> </div>period in the<div style="display:inline-block;width:6.16px"> </div>current year. Sales<div style="display:inline-block;width:6.13px"> </div>to five major<div style="display:inline-block;width:6.22px"> </div>customers comprised </div><div id="a9476_122_2" style="position:absolute;font-weight:normal;font-style:normal;left:660.2px;top:55.2px;">70</div><div id="a9476_124_3" style="position:absolute;font-weight:normal;font-style:normal;left:673.639px;top:55.2px;">%, </div><div id="a9480" style="position:absolute;font-weight:normal;font-style:normal;left:4.427px;top:73.6px;">70</div><div id="a9480_2_6" style="position:absolute;font-weight:normal;font-style:normal;left:17.867px;top:73.6px;">% and </div><div id="a9480_8_2" style="position:absolute;font-weight:normal;font-style:normal;left:55.819px;top:73.6px;">70</div><div id="a9480_10_59" style="position:absolute;font-weight:normal;font-style:normal;left:69.259px;top:73.6px;">% of total sales<div style="display:inline-block;width:5.38px"> </div>in 2020, 2019 and<div style="display:inline-block;width:5.57px"> </div>2018, respectively (see </div><div id="a9491" style="position:absolute;font-weight:normal;font-style:italic;left:384.68px;top:73.6px;">Note 4 - Major<div style="display:inline-block;width:5.33px"> </div>Customers</div><div id="a9495" style="position:absolute;font-weight:normal;font-style:normal;left:526.44px;top:73.6px;">).<div style="display:inline-block;width:7.78px"> </div>Concentrations of accounts </div><div id="a9496" style="position:absolute;font-weight:normal;font-style:normal;left:4.427px;top:92px;">receivable balances with<div style="display:inline-block;width:6.79px"> </div>five customers accounted<div style="display:inline-block;width:7px"> </div>for </div><div id="a9496_54_2" style="position:absolute;font-weight:normal;font-style:normal;left:303.533px;top:92px;">64</div><div id="a9496_56_6" style="position:absolute;font-weight:normal;font-style:normal;left:316.973px;top:92px;">% and </div><div id="a9496_62_2" style="position:absolute;font-weight:normal;font-style:normal;left:355.853px;top:92px;">56</div><div id="a9496_64_36" style="position:absolute;font-weight:normal;font-style:normal;left:369.293px;top:92px;">% of accounts<div style="display:inline-block;width:6.53px"> </div>receivable at<div style="display:inline-block;width:5.69px"> </div>December</div><div id="a9504" style="position:absolute;font-weight:normal;font-style:normal;left:578.96px;top:92px;"> </div><div id="a9505" style="position:absolute;font-weight:normal;font-style:normal;left:582.32px;top:92px;">31, 2020<div style="display:inline-block;width:5.68px"> </div>and 2019, </div><div id="a9511" style="position:absolute;font-weight:normal;font-style:normal;left:4.427px;top:110.4px;">respectively.<div style="display:inline-block;width:6.99px"> </div>The Company performs ongoing credit<div style="display:inline-block;width:5.21px"> </div>evaluations of its customers' financial<div style="display:inline-block;width:5.31px"> </div>condition.<div style="display:inline-block;width:7px"> </div>The Company maintains </div><div id="a9513" style="position:absolute;font-weight:normal;font-style:normal;left:4.427px;top:128.8px;">reserves for potential bad debt losses, and such bad<div style="display:inline-block;width:4.85px"> </div>debt losses have been historically within the Company's expectations.<div style="display:inline-block;width:8.62px"> </div>Sales </div><div id="a9515" style="position:absolute;font-weight:normal;font-style:normal;left:4.427px;top:147.2px;">to all customers' manufacturing and<div style="display:inline-block;width:5.31px"> </div>service locations in Mexico and<div style="display:inline-block;width:5.34px"> </div>Canada totaled </div><div id="a9515_83_2" style="position:absolute;font-weight:normal;font-style:normal;left:457.32px;top:147.2px;">35</div><div id="a9515_85_3" style="position:absolute;font-weight:normal;font-style:normal;left:470.6px;top:147.2px;">%, </div><div id="a9515_88_2" style="position:absolute;font-weight:normal;font-style:normal;left:488.68px;top:147.2px;">34</div><div id="a9515_90_6" style="position:absolute;font-weight:normal;font-style:normal;left:502.12px;top:147.2px;">% and </div><div id="a9515_96_2" style="position:absolute;font-weight:normal;font-style:normal;left:539.56px;top:147.2px;">32</div><div id="a9515_98_27" style="position:absolute;font-weight:normal;font-style:normal;left:553px;top:147.2px;">% of total sales for 2020, </div><div id="a9528" style="position:absolute;font-weight:normal;font-style:normal;left:4.427px;top:165.6px;">2019 and 2018, respectively.</div><div id="a9533" style="position:absolute;font-weight:bold;font-style:normal;left:157.253px;top:165.6px;"> </div><div id="a9534" style="position:absolute;font-weight:normal;font-style:normal;left:4.427px;top:184px;"> </div><div id="a9535" style="position:absolute;font-weight:normal;font-style:normal;left:4.427px;top:202.4px;">As of December 31,<div style="display:inline-block;width:5.54px"> </div>2020, the Company employed<div style="display:inline-block;width:5.53px"> </div>a total of </div><div id="a9535_57_5" style="position:absolute;font-weight:normal;font-style:normal;left:334.346px;top:202.4px;">1,617</div><div id="a9535_62_31" style="position:absolute;font-weight:normal;font-style:normal;left:364.426px;top:202.4px;"><div style="display:inline-block;width:3.84px"> </div>employees, which consisted of </div><div id="a9535_93_3" style="position:absolute;font-weight:normal;font-style:normal;left:536.746px;top:202.4px;">679</div><div id="a9535_96_25" style="position:absolute;font-weight:normal;font-style:normal;left:556.746px;top:202.4px;"><div style="display:inline-block;width:3.84px"> </div>employees in its United </div><div id="a9536" style="position:absolute;font-weight:normal;font-style:normal;left:4.427px;top:220.8px;">States operations, </div><div id="a9536_19_3" style="position:absolute;font-weight:normal;font-style:normal;left:105.706px;top:220.8px;">722</div><div id="a9536_22_41" style="position:absolute;font-weight:normal;font-style:normal;left:125.866px;top:220.8px;"><div style="display:inline-block;width:5.28px"> </div>employees in<div style="display:inline-block;width:7.48px"> </div>its Mexican<div style="display:inline-block;width:7.43px"> </div>operations and </div><div id="a9536_63_3" style="position:absolute;font-weight:normal;font-style:normal;left:364.333px;top:220.8px;">216</div><div id="a9536_66_48" style="position:absolute;font-weight:normal;font-style:normal;left:384.493px;top:220.8px;"><div style="display:inline-block;width:5.28px"> </div>employees in<div style="display:inline-block;width:7.48px"> </div>its Canadian<div style="display:inline-block;width:7.58px"> </div>operation.<div style="display:inline-block;width:10.85px"> </div>Of these </div><div id="a9536_114_5" style="position:absolute;font-weight:normal;font-style:normal;left:657.933px;top:220.8px;">1,617</div><div id="a9536_119_1" style="position:absolute;font-weight:normal;font-style:normal;left:688.013px;top:220.8px;"> </div><div id="a9538" style="position:absolute;font-weight:normal;font-style:normal;left:4.427px;top:239.2px;">employees, </div><div id="a9538_11_3" style="position:absolute;font-weight:normal;font-style:normal;left:67.786px;top:239.2px;">518</div><div id="a9538_14_110" style="position:absolute;font-weight:normal;font-style:normal;left:87.946px;top:239.2px;"><div style="display:inline-block;width:3.2px"> </div>employees at the Company’s Columbus, Ohio facility are covered by a collective bargaining agreement with the </div><div id="a9541" style="position:absolute;font-weight:normal;font-style:normal;left:4.427px;top:257.6px;">International Association of Machinists<div style="display:inline-block;width:6.47px"> </div>and Aerospace Workers (“IAM”),<div style="display:inline-block;width:6.52px"> </div>which extends to<div style="display:inline-block;width:5.21px"> </div>August 7, 2022, </div><div id="a9541_104_3" style="position:absolute;font-weight:normal;font-style:normal;left:593.159px;top:257.6px;">534</div><div id="a9541_107_14" style="position:absolute;font-weight:normal;font-style:normal;left:613.159px;top:257.6px;"><div style="display:inline-block;width:4.16px"> </div>employees at </div><div id="a9546" style="position:absolute;font-weight:normal;font-style:normal;left:4.427px;top:276px;">the Company<div style="display:inline-block;width:1.48px"> </div>’s Matamoros,<div style="display:inline-block;width:6.9px"> </div>Mexico facility<div style="display:inline-block;width:6.02px"> </div>are covered<div style="display:inline-block;width:6.28px"> </div>by a collective<div style="display:inline-block;width:7.21px"> </div>bargaining agreement<div style="display:inline-block;width:6.43px"> </div>with Sindicato de<div style="display:inline-block;width:7.37px"> </div>Jorneleros y </div><div id="a9549" style="position:absolute;font-weight:normal;font-style:normal;left:4.427px;top:294.4px;">Obreros, which<div style="display:inline-block;width:7.73px"> </div>extends to<div style="display:inline-block;width:7.86px"> </div>January 21,<div style="display:inline-block;width:7.9px"> </div>2022, </div><div id="a9549_44_3" style="position:absolute;font-weight:normal;font-style:normal;left:260.746px;top:294.4px;">191</div><div id="a9549_47_70" style="position:absolute;font-weight:normal;font-style:normal;left:280.746px;top:294.4px;"><div style="display:inline-block;width:5.44px"> </div>employees at<div style="display:inline-block;width:7.59px"> </div>the Company's<div style="display:inline-block;width:7.81px"> </div>Cobourg, Canada<div style="display:inline-block;width:8.03px"> </div>facility are<div style="display:inline-block;width:7.82px"> </div>covered by<div style="display:inline-block;width:7.61px"> </div>a </div><div id="a9551" style="position:absolute;font-weight:normal;font-style:normal;left:4.427px;top:312.8px;">collective bargaining agreement<div style="display:inline-block;width:6.06px"> </div>with United Food<div style="display:inline-block;width:5.66px"> </div>& Commercial Workers<div style="display:inline-block;width:5.37px"> </div>Canada ("UFCW"), which<div style="display:inline-block;width:5.63px"> </div>extends to November<div style="display:inline-block;width:5.77px"> </div>1, </div><div id="a9552" style="position:absolute;font-weight:normal;font-style:normal;left:4.427px;top:331.2px;">2021, and </div><div id="a9552_10_2" style="position:absolute;font-weight:normal;font-style:normal;left:63.146px;top:331.2px;">73</div><div id="a9552_12_108" style="position:absolute;font-weight:normal;font-style:normal;left:76.586px;top:331.2px;"><div style="display:inline-block;width:4.64px"> </div>employees at<div style="display:inline-block;width:5.99px"> </div>the Company's<div style="display:inline-block;width:6.21px"> </div>Escobedo, Mexico<div style="display:inline-block;width:6.6px"> </div>facility are<div style="display:inline-block;width:6.06px"> </div>covered by<div style="display:inline-block;width:6.17px"> </div>a collective<div style="display:inline-block;width:6.21px"> </div>bargaining agreement<div style="display:inline-block;width:6.73px"> </div>with </div><div id="a9554" style="position:absolute;font-weight:normal;font-style:normal;left:4.427px;top:349.6px;">Sindicato de<div style="display:inline-block;width:6.14px"> </div>trabajadores de<div style="display:inline-block;width:6.3px"> </div>la industria metalica<div style="display:inline-block;width:7.37px"> </div>y del comercio<div style="display:inline-block;width:7.33px"> </div>del estado<div style="display:inline-block;width:6.05px"> </div>de Nuevo<div style="display:inline-block;width:6.02px"> </div>Leon Presidente<div style="display:inline-block;width:6.08px"> </div>Benito Juarez<div style="display:inline-block;width:6.24px"> </div>Garcia </div><div id="a9555" style="position:absolute;font-weight:normal;font-style:normal;left:4.427px;top:368px;">C.T.M., which<div style="display:inline-block;width:7.95px"> </div>extends to<div style="display:inline-block;width:8.18px"> </div>February 1,<div style="display:inline-block;width:8.22px"> </div>2021. The<div style="display:inline-block;width:7.75px"> </div>Company is<div style="display:inline-block;width:7.86px"> </div>currently negotiating<div style="display:inline-block;width:8.36px"> </div>an extension<div style="display:inline-block;width:7.97px"> </div>to the<div style="display:inline-block;width:8.05px"> </div>Escobedo, Mexico </div><div id="a9557" style="position:absolute;font-weight:normal;font-style:normal;left:4.427px;top:386.4px;">collective bargaining agreement.</div></div>
CY2020	us-gaap	Research And Development Expense ResearchAndDevelopmentExpense	1168000	USD
CY2019	us-gaap	Research And Development Expense ResearchAndDevelopmentExpense	1171000	USD
CY2018	us-gaap	Research And Development Expense ResearchAndDevelopmentExpense	1032000	USD
CY2020	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Before Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentBeforeTax	-214000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Before Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentBeforeTax	229000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Before Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentBeforeTax	88000	USD
CY2020	us-gaap	Net Income Loss NetIncomeLoss	8165000	USD
CY2019	us-gaap	Net Income Loss NetIncomeLoss	-15223000	USD
CY2018	us-gaap	Net Income Loss NetIncomeLoss	-4782000	USD
CY2020	us-gaap	Undistributed Earnings Loss Allocated To Participating Securities Basic UndistributedEarningsLossAllocatedToParticipatingSecuritiesBasic	424000	USD
CY2019	us-gaap	Undistributed Earnings Loss Allocated To Participating Securities Basic UndistributedEarningsLossAllocatedToParticipatingSecuritiesBasic	0	USD
CY2018	us-gaap	Undistributed Earnings Loss Allocated To Participating Securities Basic UndistributedEarningsLossAllocatedToParticipatingSecuritiesBasic	0	USD
CY2020	us-gaap	Net Income Loss From Continuing Operations Available To Common Shareholders Basic NetIncomeLossFromContinuingOperationsAvailableToCommonShareholdersBasic	7741000	USD
CY2019	us-gaap	Net Income Loss From Continuing Operations Available To Common Shareholders Basic NetIncomeLossFromContinuingOperationsAvailableToCommonShareholdersBasic	-15223000	USD
CY2018	us-gaap	Net Income Loss From Continuing Operations Available To Common Shareholders Basic NetIncomeLossFromContinuingOperationsAvailableToCommonShareholdersBasic	-4782000	USD
CY2020	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	7936000	shares
CY2019	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	7830000	shares
CY2018	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	7750000	shares
CY2020	us-gaap	Weighted Average Number Diluted Shares Outstanding Adjustment WeightedAverageNumberDilutedSharesOutstandingAdjustment	3000	shares
CY2019	us-gaap	Weighted Average Number Diluted Shares Outstanding Adjustment WeightedAverageNumberDilutedSharesOutstandingAdjustment	0	shares
CY2018	us-gaap	Weighted Average Number Diluted Shares Outstanding Adjustment WeightedAverageNumberDilutedSharesOutstandingAdjustment	0	shares
CY2020	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	7939000	shares
CY2019	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	7830000	shares
CY2018	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	7750000	shares
CY2020	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.98
CY2019	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-1.94
CY2018	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-0.62
CY2020	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.98
CY2019	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-1.94
CY2018	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-0.62
CY2020	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	222356000	USD
CY2019	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	284290000	USD
CY2018	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	269485000	USD
CY2020Q4	us-gaap	Operating Lease Liability Current OperatingLeaseLiabilityCurrent	1023000	USD
CY2019Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Four LesseeOperatingLeaseLiabilityPaymentsDueYearFour	1000000	USD
CY2020Q4	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	100501000	USD
CY2019Q4	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	91675000	USD
CY2020Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	74052000	USD
CY2019Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	79206000	USD
CY2020	us-gaap	Depreciation Depreciation	8659000	USD
CY2019	us-gaap	Depreciation Depreciation	8187000	USD
CY2020	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	222356000	USD
CY2019	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	284290000	USD
CY2018	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	269485000	USD
CY2020Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	74052000	USD
CY2019Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	79206000	USD
CY2020Q4	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	174553000	USD
CY2019Q4	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	170881000	USD
CY2018	us-gaap	Depreciation Depreciation	7361000	USD
CY2020	cmt	Lessee Operating Lease With Options To Extend Lease Term LesseeOperatingLeaseWithOptionsToExtendLeaseTerm	P5Y
CY2020	us-gaap	Operating Lease Cost OperatingLeaseCost	1430000	USD
CY2019	us-gaap	Operating Lease Cost OperatingLeaseCost	1430000	USD
CY2020	us-gaap	Lease Cost LeaseCost	1430000	USD
CY2019	us-gaap	Lease Cost LeaseCost	1430000	USD
CY2020Q4	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	2754000	USD
CY2019Q4	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	4484000	USD
CY2020Q4	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	2754000	USD
CY2019Q4	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	4484000	USD
CY2020Q4	us-gaap	Operating Lease Liability Current OperatingLeaseLiabilityCurrent	1023000	USD
CY2019Q4	us-gaap	Operating Lease Liability Current OperatingLeaseLiabilityCurrent	1304000	USD
CY2020Q4	us-gaap	Operating Lease Liability Noncurrent OperatingLeaseLiabilityNoncurrent	1670000	USD
CY2019Q4	us-gaap	Operating Lease Liability Noncurrent OperatingLeaseLiabilityNoncurrent	3119000	USD
CY2020Q4	us-gaap	Operating Lease Liability OperatingLeaseLiability	2693000	USD
CY2019Q4	us-gaap	Operating Lease Liability OperatingLeaseLiability	4423000	USD
CY2020Q4	us-gaap	Operating Lease Weighted Average Remaining Lease Term1 OperatingLeaseWeightedAverageRemainingLeaseTerm1	P3Y6M
CY2019Q4	us-gaap	Operating Lease Weighted Average Remaining Lease Term1 OperatingLeaseWeightedAverageRemainingLeaseTerm1	P4Y
CY2020Q4	us-gaap	Operating Lease Weighted Average Discount Rate Percent OperatingLeaseWeightedAverageDiscountRatePercent	0.059	pure
CY2019Q4	us-gaap	Operating Lease Weighted Average Discount Rate Percent OperatingLeaseWeightedAverageDiscountRatePercent	0.049	pure
CY2020	us-gaap	Operating Lease Payments OperatingLeasePayments	1455000	USD
CY2019	us-gaap	Operating Lease Payments OperatingLeasePayments	1455000	USD
CY2020Q4	us-gaap	Lessee Operating Lease Liability Payments Due Next Rolling Twelve Months LesseeOperatingLeaseLiabilityPaymentsDueNextRollingTwelveMonths	1215000	USD
CY2020Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Two LesseeOperatingLeaseLiabilityPaymentsDueYearTwo	811000	USD
CY2020Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Three LesseeOperatingLeaseLiabilityPaymentsDueYearThree	706000	USD
CY2020Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Four LesseeOperatingLeaseLiabilityPaymentsDueYearFour	705000	USD
CY2020Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Five LesseeOperatingLeaseLiabilityPaymentsDueYearFive	0	USD
CY2020Q4	us-gaap	Lessee Operating Lease Liability Payments Due LesseeOperatingLeaseLiabilityPaymentsDue	3437000	USD
CY2020Q4	us-gaap	Lessee Operating Lease Liability Undiscounted Excess Amount LesseeOperatingLeaseLiabilityUndiscountedExcessAmount	744000	USD
CY2020Q4	us-gaap	Operating Lease Liability OperatingLeaseLiability	2693000	USD
CY2019Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Three LesseeOperatingLeaseLiabilityPaymentsDueYearThree	1102000	USD
CY2020Q4	us-gaap	Operating Lease Liability Noncurrent OperatingLeaseLiabilityNoncurrent	1670000	USD
CY2019Q4	us-gaap	Lessee Operating Lease Liability Payments Due Next Rolling Twelve Months LesseeOperatingLeaseLiabilityPaymentsDueNextRollingTwelveMonths	1433000	USD
CY2019Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Two LesseeOperatingLeaseLiabilityPaymentsDueYearTwo	1174000	USD
CY2019Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Five LesseeOperatingLeaseLiabilityPaymentsDueYearFive	530000	USD
CY2019Q4	us-gaap	Lessee Operating Lease Liability Payments Due LesseeOperatingLeaseLiabilityPaymentsDue	5239000	USD
CY2019Q4	us-gaap	Lessee Operating Lease Liability Undiscounted Excess Amount LesseeOperatingLeaseLiabilityUndiscountedExcessAmount	816000	USD
CY2019Q4	us-gaap	Operating Lease Liability OperatingLeaseLiability	4423000	USD
CY2019Q4	us-gaap	Operating Lease Liability Current OperatingLeaseLiabilityCurrent	1304000	USD
CY2019Q4	us-gaap	Operating Lease Liability Noncurrent OperatingLeaseLiabilityNoncurrent	3119000	USD
CY2019Q4	us-gaap	Goodwill Goodwill	17376000	USD
CY2018Q4	us-gaap	Goodwill Goodwill	21476000	USD
CY2020	us-gaap	Goodwill Acquired During Period GoodwillAcquiredDuringPeriod	0	USD
CY2019	us-gaap	Goodwill Acquired During Period GoodwillAcquiredDuringPeriod	0	USD
CY2020	us-gaap	Goodwill Impairment Loss GoodwillImpairmentLoss	0	USD
CY2019	us-gaap	Goodwill Impairment Loss GoodwillImpairmentLoss	4100000	USD
CY2020Q4	us-gaap	Goodwill Goodwill	17376000	USD
CY2019Q4	us-gaap	Goodwill Goodwill	17376000	USD
CY2020Q4	us-gaap	Finite Lived Intangible Assets Gross FiniteLivedIntangibleAssetsGross	17420000	USD
CY2020Q4	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	5904000	USD
CY2020Q4	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	11516000	USD
CY2019Q4	us-gaap	Finite Lived Intangible Assets Gross FiniteLivedIntangibleAssetsGross	17420000	USD
CY2019Q4	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	3956000	USD
CY2019Q4	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	13464000	USD
CY2020	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	1948000	USD
CY2019	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	1949000	USD
CY2018	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	1869000	USD
CY2020Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Next Twelve Months FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths	1949000	USD
CY2020Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Two FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo	1949000	USD
CY2020Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Three FiniteLivedIntangibleAssetsAmortizationExpenseYearThree	1602000	USD
CY2020Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Four FiniteLivedIntangibleAssetsAmortizationExpenseYearFour	1587000	USD
CY2020Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Five FiniteLivedIntangibleAssetsAmortizationExpenseYearFive	951000	USD
CY2020Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense After Year Five FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearFive	3478000	USD
CY2020Q4	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	11516000	USD
CY2020Q4	us-gaap	Debt Longterm And Shortterm Combined Amount DebtLongtermAndShorttermCombinedAmount	29690000	USD
CY2019Q4	us-gaap	Deferred Finance Costs Gross DeferredFinanceCostsGross	807000	USD
CY2020Q4	us-gaap	Deferred Finance Costs Gross DeferredFinanceCostsGross	1957000	USD
CY2020	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	-5713000	USD
CY2020	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	5000	USD
CY2020Q4	us-gaap	Long Term Debt Current LongTermDebtCurrent	2535000	USD
CY2019Q4	us-gaap	Long Term Debt Current LongTermDebtCurrent	49451000	USD
CY2020Q4	us-gaap	Long Term Debt LongTermDebt	25198000	USD
CY2019Q4	us-gaap	Long Term Debt LongTermDebt	0	USD
CY2020Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Next Twelve Months LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths	3019000	USD
CY2020Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Two LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo	4428000	USD
CY2020Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Three LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree	4601000	USD
CY2020Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Four LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour	11585000	USD
CY2020Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Five LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive	6057000	USD
CY2020Q4	us-gaap	Debt Longterm And Shortterm Combined Amount DebtLongtermAndShorttermCombinedAmount	29690000	USD
CY2020	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	-8378000	USD
CY2019	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	0	USD
CY2018	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	11000	USD
CY2020	us-gaap	Current Foreign Tax Expense Benefit CurrentForeignTaxExpenseBenefit	2660000	USD
CY2019	us-gaap	Current Foreign Tax Expense Benefit CurrentForeignTaxExpenseBenefit	685000	USD
CY2018	us-gaap	Current Foreign Tax Expense Benefit CurrentForeignTaxExpenseBenefit	1023000	USD
CY2019	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	20000	USD
CY2020	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansTax	27000	USD
CY2018	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	14000	USD
CY2020	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	955000	USD
CY2018	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	1048000	USD
CY2019	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	705000	USD
CY2019	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	738000	USD
CY2018	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	-1355000	USD
CY2020	us-gaap	Deferred Foreign Income Tax Expense Benefit DeferredForeignIncomeTaxExpenseBenefit	1098000	USD
CY2019	us-gaap	Deferred Foreign Income Tax Expense Benefit DeferredForeignIncomeTaxExpenseBenefit	-1824000	USD
CY2018	us-gaap	Deferred Foreign Income Tax Expense Benefit DeferredForeignIncomeTaxExpenseBenefit	-289000	USD
CY2020	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	42000	USD
CY2019	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	26000	USD
CY2018	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	-68000	USD
CY2020	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	2095000	USD
CY2019	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-1060000	USD
CY2018	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-1712000	USD
CY2020	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	-3618000	USD
CY2019	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	-355000	USD
CY2018	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	-664000	USD
CY2020	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	954000	USD
CY2019	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	-3274000	USD
CY2018	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	-1145000	USD
CY2020	us-gaap	Income Tax Reconciliation Change In Deferred Tax Assets Valuation Allowance IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance	-2074000	USD
CY2019	us-gaap	Income Tax Reconciliation Change In Deferred Tax Assets Valuation Allowance IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance	3267000	USD
CY2018	us-gaap	Income Tax Reconciliation Change In Deferred Tax Assets Valuation Allowance IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance	0	USD
CY2020	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.34	pure
CY2020	us-gaap	Income Tax Reconciliation Prior Year Income Taxes IncomeTaxReconciliationPriorYearIncomeTaxes	-3205000	USD
CY2019	us-gaap	Income Tax Reconciliation Prior Year Income Taxes IncomeTaxReconciliationPriorYearIncomeTaxes	0	USD
CY2018	us-gaap	Income Tax Reconciliation Prior Year Income Taxes IncomeTaxReconciliationPriorYearIncomeTaxes	0	USD
CY2020	us-gaap	Income Tax Reconciliation Foreign Income Tax Rate Differential IncomeTaxReconciliationForeignIncomeTaxRateDifferential	790000	USD
CY2019	us-gaap	Income Tax Reconciliation Foreign Income Tax Rate Differential IncomeTaxReconciliationForeignIncomeTaxRateDifferential	-209000	USD
CY2018	us-gaap	Income Tax Reconciliation Foreign Income Tax Rate Differential IncomeTaxReconciliationForeignIncomeTaxRateDifferential	213000	USD
CY2020	us-gaap	Income Tax Reconciliation Nondeductible Expense Share Based Compensation Cost IncomeTaxReconciliationNondeductibleExpenseShareBasedCompensationCost	0	USD
CY2019	us-gaap	Income Tax Reconciliation Nondeductible Expense Share Based Compensation Cost IncomeTaxReconciliationNondeductibleExpenseShareBasedCompensationCost	0	USD
CY2018	us-gaap	Income Tax Reconciliation Nondeductible Expense Share Based Compensation Cost IncomeTaxReconciliationNondeductibleExpenseShareBasedCompensationCost	236000	USD
CY2020	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	-372000	USD
CY2019	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	-102000	USD
CY2018	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	-54000	USD
CY2020	us-gaap	Income Tax Reconciliation Nondeductible Expense Other IncomeTaxReconciliationNondeductibleExpenseOther	289000	USD
CY2019	us-gaap	Income Tax Reconciliation Nondeductible Expense Other IncomeTaxReconciliationNondeductibleExpenseOther	-37000	USD
CY2018	us-gaap	Income Tax Reconciliation Nondeductible Expense Other IncomeTaxReconciliationNondeductibleExpenseOther	86000	USD
CY2020	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	-3618000	USD
CY2019	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	-355000	USD
CY2018	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	-664000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Net DeferredTaxAssetsNet	53000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	1193000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards DeferredTaxAssetsOperatingLossCarryforwards	535000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards DeferredTaxAssetsOperatingLossCarryforwards	4928000	USD
CY2020Q4	us-gaap	Deferred Tax Asset Interest Carryforward DeferredTaxAssetInterestCarryforward	1033000	USD
CY2019Q4	us-gaap	Deferred Tax Asset Interest Carryforward DeferredTaxAssetInterestCarryforward	686000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Accrued Liabilities DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAccruedLiabilities	391000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Accrued Liabilities DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAccruedLiabilities	477000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Allowance For Doubtful Accounts DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAllowanceForDoubtfulAccounts	40000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Allowance For Doubtful Accounts DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAllowanceForDoubtfulAccounts	108000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Inventory DeferredTaxAssetsInventory	322000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Inventory DeferredTaxAssetsInventory	587000	USD
CY2020Q4	us-gaap	Deferred Tax Liabilities Property Plant And Equipment DeferredTaxLiabilitiesPropertyPlantAndEquipment	5509000	USD
CY2019Q4	us-gaap	Deferred Tax Liabilities Property Plant And Equipment DeferredTaxLiabilitiesPropertyPlantAndEquipment	5580000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Postretirement Benefits DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsPostretirementBenefits	2068000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Postretirement Benefits DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsPostretirementBenefits	2090000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Goodwill And Intangible Assets DeferredTaxAssetsGoodwillAndIntangibleAssets	2210000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Goodwill And Intangible Assets DeferredTaxAssetsGoodwillAndIntangibleAssets	1973000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Other DeferredTaxAssetsOther	156000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Other DeferredTaxAssetsOther	24000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Gross DeferredTaxAssetsGross	1246000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Gross DeferredTaxAssetsGross	5293000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	1193000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	3267000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Net DeferredTaxAssetsNet	53000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Net DeferredTaxAssetsNet	2026000	USD
CY2020Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	0	USD
CY2019Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	0	USD
CY2020	us-gaap	Multiemployer Plans Plan Benefits Description MultiemployerPlansPlanBenefitsDescription	a multi-employer defined benefit pension plan, health care and life insurance benefits
CY2020	us-gaap	Multiemployer Plan Pension Significant Annual Report Date MultiemployerPlanPensionSignificantAnnualReportDate	2020-12-31
CY2020	us-gaap	Multiemployer Plan Pension Significant Certified Zone Status Date MultiemployerPlanPensionSignificantCertifiedZoneStatusDate	2020-12-31
CY2020	us-gaap	Multiemployer Plan Pension Significant Plan Number MultiemployerPlanPensionSignificantPlanNumber	002
CY2020	us-gaap	Multiemployer Plan Pension Significant Funding Improvement Or Rehabilitation Plan Implementation Status Fixed List MultiemployerPlanPensionSignificantFundingImprovementOrRehabilitationPlanImplementationStatusFixedList	Implemented
CY2020	us-gaap	Multiemployer Plan Pension Significant Employer Contribution Cost MultiemployerPlanPensionSignificantEmployerContributionCost	676000	USD
CY2019	us-gaap	Multiemployer Plan Pension Significant Employer Contribution Cost MultiemployerPlanPensionSignificantEmployerContributionCost	971000	USD
CY2020	us-gaap	Multiemployer Plan Pension Significant Surcharge Fixed List MultiemployerPlanPensionSignificantSurchargeFixedList	Yes
CY2020	us-gaap	Multiemployer Plan Pension Significant Collective Bargaining Arrangement Expiration Date MultiemployerPlanPensionSignificantCollectiveBargainingArrangementExpirationDate	2022-08-07
CY2020	us-gaap	Multiemployer Plan Pension Significant Employer Contribution Cost MultiemployerPlanPensionSignificantEmployerContributionCost	676000	USD
CY2019	us-gaap	Multiemployer Plan Pension Significant Employer Contribution Cost MultiemployerPlanPensionSignificantEmployerContributionCost	971000	USD
CY2020	us-gaap	Multiemployer Plan Pension Significant Employer Contribution Exceeds Five Percent MultiemployerPlanPensionSignificantEmployerContributionExceedsFivePercent	false
CY2020	us-gaap	Multiemployer Plans Minimum Contribution Description MultiemployerPlansMinimumContributionDescription	Under the terms of the collective-bargaining agreement, the Company is required to make contributions to the plan for each hour worked up to a maximum of 40 hours per person, per week at $1.55 per hour from August 10, 2019 through August 6, 2022. The Company is paying a surcharge of $2.40.
CY2020	us-gaap	Defined Benefit Plan Explanation Of Significant Change In Benefit Obligation Or Plan Assets Not Apparent From Other Required Disclosures DefinedBenefitPlanExplanationOfSignificantChangeInBenefitObligationOrPlanAssetsNotApparentFromOtherRequiredDisclosures	In August 2010, as part of a new collective-bargaining agreement, the post retirement health and life insurance benefits for all current and future represented employees who were not retired were eliminated in exchange for a one-time cash payment. Individuals who retired prior to August 2010 remain eligible for post retirement health and life insurance benefits.
CY2020	us-gaap	Defined Benefit Plan Accumulated Benefit Obligation Increase Decrease For Plan Amendment DefinedBenefitPlanAccumulatedBenefitObligationIncreaseDecreaseForPlanAmendment	-10282000	USD
CY2020	us-gaap	Defined Benefit Plan Amortization Of Prior Service Cost Credit DefinedBenefitPlanAmortizationOfPriorServiceCostCredit	-496000	USD
CY2020	us-gaap	Multiemployer Plan Pension Significant Employer Contribution Cost MultiemployerPlanPensionSignificantEmployerContributionCost	676000	USD
CY2019	us-gaap	Multiemployer Plan Pension Significant Employer Contribution Cost MultiemployerPlanPensionSignificantEmployerContributionCost	971000	USD
CY2018	us-gaap	Multiemployer Plan Pension Significant Employer Contribution Cost MultiemployerPlanPensionSignificantEmployerContributionCost	760000	USD
CY2020	us-gaap	Defined Contribution Plan Cost Recognized DefinedContributionPlanCostRecognized	1173000	USD
CY2019	us-gaap	Defined Contribution Plan Cost Recognized DefinedContributionPlanCostRecognized	1258000	USD
CY2018	us-gaap	Defined Contribution Plan Cost Recognized DefinedContributionPlanCostRecognized	1059000	USD
CY2020	us-gaap	Pension And Other Postretirement Benefit Expense PensionAndOtherPostretirementBenefitExpense	1849000	USD
CY2019	us-gaap	Pension And Other Postretirement Benefit Expense PensionAndOtherPostretirementBenefitExpense	2229000	USD
CY2018	us-gaap	Pension And Other Postretirement Benefit Expense PensionAndOtherPostretirementBenefitExpense	1819000	USD
CY2020	us-gaap	Defined Benefit Plan Interest Cost DefinedBenefitPlanInterestCost	235000	USD
CY2019	us-gaap	Defined Benefit Plan Interest Cost DefinedBenefitPlanInterestCost	285000	USD
CY2018	us-gaap	Defined Benefit Plan Interest Cost DefinedBenefitPlanInterestCost	277000	USD
CY2020	us-gaap	Defined Benefit Plan Amortization Of Prior Service Cost Credit DefinedBenefitPlanAmortizationOfPriorServiceCostCredit	-496000	USD
CY2019	us-gaap	Defined Benefit Plan Amortization Of Prior Service Cost Credit DefinedBenefitPlanAmortizationOfPriorServiceCostCredit	-496000	USD
CY2018	us-gaap	Defined Benefit Plan Amortization Of Prior Service Cost Credit DefinedBenefitPlanAmortizationOfPriorServiceCostCredit	-496000	USD
CY2020	us-gaap	Other Comprehensive Income Loss Amortization Adjustment From Aoci Pension And Other Postretirement Benefit Plans For Net Prior Service Cost Credit Tax OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditTax	181000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Amortization Adjustment From Aoci Pension And Other Postretirement Benefit Plans For Net Prior Service Cost Credit Tax OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditTax	117000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Amortization Adjustment From Aoci Pension And Other Postretirement Benefit Plans For Net Prior Service Cost Credit Tax OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditTax	171000	USD
CY2020	us-gaap	Defined Benefit Plan Net Periodic Benefit Cost DefinedBenefitPlanNetPeriodicBenefitCost	-80000	USD
CY2019	us-gaap	Defined Benefit Plan Net Periodic Benefit Cost DefinedBenefitPlanNetPeriodicBenefitCost	-94000	USD
CY2018	us-gaap	Defined Benefit Plan Net Periodic Benefit Cost DefinedBenefitPlanNetPeriodicBenefitCost	-48000	USD
CY2020	us-gaap	Postemployment Benefits Period Expense PostemploymentBenefitsPeriodExpense	1769000	USD
CY2019	us-gaap	Postemployment Benefits Period Expense PostemploymentBenefitsPeriodExpense	2135000	USD
CY2018	us-gaap	Postemployment Benefits Period Expense PostemploymentBenefitsPeriodExpense	1771000	USD
CY2020	us-gaap	Defined Benefit Plan Actuarial Gain Loss Immediate Recognition As Component In Net Periodic Benefit Cost Credit DefinedBenefitPlanActuarialGainLossImmediateRecognitionAsComponentInNetPeriodicBenefitCostCredit	-945000	USD
CY2019	us-gaap	Defined Benefit Plan Actuarial Gain Loss Immediate Recognition As Component In Net Periodic Benefit Cost Credit DefinedBenefitPlanActuarialGainLossImmediateRecognitionAsComponentInNetPeriodicBenefitCostCredit	-1956000	USD
CY2019Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	1370000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationTax	140000	USD
CY2018Q4	us-gaap	Aoci Loss Cash Flow Hedge Cumulative Gain Loss After Tax AociLossCashFlowHedgeCumulativeGainLossAfterTax	-612000	USD
CY2018Q4	us-gaap	Accumulated Other Comprehensive Income Loss Defined Benefit Pension And Other Postretirement Plans Net Of Tax AccumulatedOtherComprehensiveIncomeLossDefinedBenefitPensionAndOtherPostretirementPlansNetOfTax	2729000	USD
CY2018Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	2117000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Before Reclassification And Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAndTax	791000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Before Reclassification Adjustments And Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentBeforeReclassificationAdjustmentsAndTax	-1102000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Before Reclassifications Tax OtherComprehensiveIncomeLossBeforeReclassificationsTax	-311000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Reclassification Before Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationBeforeTax	230000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci Pension And Other Postretirement Benefit Plans Before Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansBeforeTax	-379000	USD
CY2019	us-gaap	Reclassification From Accumulated Other Comprehensive Income Current Period Before Tax ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodBeforeTax	-609000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansTax	313000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Tax OtherComprehensiveIncomeLossTax	173000	USD
CY2019Q4	us-gaap	Aoci Loss Cash Flow Hedge Cumulative Gain Loss After Tax AociLossCashFlowHedgeCumulativeGainLossAfterTax	-191000	USD
CY2019Q4	us-gaap	Accumulated Other Comprehensive Income Loss Defined Benefit Pension And Other Postretirement Plans Net Of Tax AccumulatedOtherComprehensiveIncomeLossDefinedBenefitPensionAndOtherPostretirementPlansNetOfTax	1561000	USD
CY2019Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	1370000	USD
CY2020	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Before Reclassification And Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAndTax	-773000	USD
CY2019Q4	us-gaap	Accumulated Other Comprehensive Income Loss Defined Benefit Pension And Other Postretirement Plans Net Of Tax AccumulatedOtherComprehensiveIncomeLossDefinedBenefitPensionAndOtherPostretirementPlansNetOfTax	1561000	USD
CY2019Q4	us-gaap	Aoci Loss Cash Flow Hedge Cumulative Gain Loss After Tax AociLossCashFlowHedgeCumulativeGainLossAfterTax	-191000	USD
CY2020	us-gaap	Other Comprehensive Income Loss Tax OtherComprehensiveIncomeLossTax	-35000	USD
CY2020	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Before Reclassification Adjustments And Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentBeforeReclassificationAdjustmentsAndTax	102000	USD
CY2020	us-gaap	Other Comprehensive Income Loss Before Reclassifications Tax OtherComprehensiveIncomeLossBeforeReclassificationsTax	-671000	USD
CY2020	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Reclassification Before Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationBeforeTax	1026000	USD
CY2020	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci Pension And Other Postretirement Benefit Plans Before Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansBeforeTax	-315000	USD
CY2020	us-gaap	Reclassification From Accumulated Other Comprehensive Income Current Period Before Tax ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodBeforeTax	711000	USD
CY2020	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationTax	62000	USD
CY2020Q4	us-gaap	Aoci Loss Cash Flow Hedge Cumulative Gain Loss After Tax AociLossCashFlowHedgeCumulativeGainLossAfterTax	0	USD
CY2020Q4	us-gaap	Accumulated Other Comprehensive Income Loss Defined Benefit Pension And Other Postretirement Plans Net Of Tax AccumulatedOtherComprehensiveIncomeLossDefinedBenefitPensionAndOtherPostretirementPlansNetOfTax	1375000	USD
CY2020Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	1375000	USD
CY2020Q1	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	64023000	USD
CY2020Q2	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	37806000	USD
CY2020Q3	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	59873000	USD
CY2020Q4	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	60654000	USD
CY2020	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	222356000	USD
CY2020Q1	us-gaap	Gross Profit GrossProfit	10766000	USD
CY2020Q2	us-gaap	Gross Profit GrossProfit	2903000	USD
CY2020Q3	us-gaap	Gross Profit GrossProfit	10838000	USD
CY2020Q4	us-gaap	Gross Profit GrossProfit	9967000	USD
CY2020	us-gaap	Gross Profit GrossProfit	34474000	USD
CY2020Q1	us-gaap	Operating Income Loss OperatingIncomeLoss	4261000	USD
CY2020Q2	us-gaap	Operating Income Loss OperatingIncomeLoss	-1206000	USD
CY2020Q3	us-gaap	Operating Income Loss OperatingIncomeLoss	4321000	USD
CY2020Q4	us-gaap	Operating Income Loss OperatingIncomeLoss	3014000	USD
CY2020	us-gaap	Operating Income Loss OperatingIncomeLoss	10390000	USD
CY2020Q1	us-gaap	Net Income Loss NetIncomeLoss	7961000	USD
CY2020Q2	us-gaap	Net Income Loss NetIncomeLoss	-2272000	USD
CY2020Q3	us-gaap	Net Income Loss NetIncomeLoss	3343000	USD
CY2020Q4	us-gaap	Net Income Loss NetIncomeLoss	-867000	USD
CY2020	us-gaap	Net Income Loss NetIncomeLoss	8165000	USD
CY2020Q1	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.97
CY2020Q2	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-0.29
CY2020Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.39
CY2020Q4	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-0.10
CY2020	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.98
CY2020Q1	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.97
CY2020Q2	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-0.29
CY2020Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.39
CY2020Q4	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-0.10
CY2020	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.98
CY2019Q1	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	72266000	USD
CY2019Q2	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	81247000	USD
CY2019Q3	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	74655000	USD
CY2019Q4	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	56122000	USD
CY2019	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	284290000	USD
CY2019Q1	us-gaap	Gross Profit GrossProfit	3149000	USD
CY2019Q2	us-gaap	Gross Profit GrossProfit	8491000	USD
CY2019Q3	us-gaap	Gross Profit GrossProfit	6484000	USD
CY2019Q4	us-gaap	Gross Profit GrossProfit	3382000	USD
CY2019	us-gaap	Gross Profit GrossProfit	21506000	USD
CY2019Q1	us-gaap	Operating Income Loss OperatingIncomeLoss	-4017000	USD
CY2019Q2	us-gaap	Operating Income Loss OperatingIncomeLoss	1267000	USD
CY2019Q3	us-gaap	Operating Income Loss OperatingIncomeLoss	-4657000	USD
CY2019Q4	us-gaap	Operating Income Loss OperatingIncomeLoss	-4121000	USD
CY2019	us-gaap	Operating Income Loss OperatingIncomeLoss	-11528000	USD
CY2019Q1	us-gaap	Net Income Loss NetIncomeLoss	-3845000	USD
CY2019Q2	us-gaap	Net Income Loss NetIncomeLoss	209000	USD
CY2018Q3	us-gaap	Operating Income Loss OperatingIncomeLoss	-1487000	USD
CY2019Q3	us-gaap	Net Income Loss NetIncomeLoss	-6125000	USD
CY2018Q1	us-gaap	Operating Income Loss OperatingIncomeLoss	1125000	USD
CY2019Q4	us-gaap	Net Income Loss NetIncomeLoss	-5462000	USD
CY2019	us-gaap	Net Income Loss NetIncomeLoss	-15223000	USD
CY2019Q1	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-0.49
CY2019Q2	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.03
CY2019Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-0.78
CY2018Q2	us-gaap	Operating Income Loss OperatingIncomeLoss	1418000	USD
CY2019Q4	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-0.69
CY2019	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-1.94
CY2019Q1	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-0.49
CY2019Q2	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.03
CY2019Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-0.78
CY2019Q4	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-0.69
CY2019	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-1.94
CY2018Q1	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	63046000	USD
CY2018Q2	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	68601000	USD
CY2018Q3	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	64676000	USD
CY2018Q4	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	73162000	USD
CY2018	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	269485000	USD
CY2018Q1	us-gaap	Gross Profit GrossProfit	7885000	USD
CY2018Q2	us-gaap	Gross Profit GrossProfit	7897000	USD
CY2018Q3	us-gaap	Gross Profit GrossProfit	4862000	USD
CY2018Q4	us-gaap	Gross Profit GrossProfit	6497000	USD
CY2018	us-gaap	Gross Profit GrossProfit	27141000	USD
CY2018Q4	us-gaap	Operating Income Loss OperatingIncomeLoss	-4156000	USD
CY2018	us-gaap	Operating Income Loss OperatingIncomeLoss	-3100000	USD
CY2018Q1	us-gaap	Net Income Loss NetIncomeLoss	518000	USD
CY2018Q2	us-gaap	Net Income Loss NetIncomeLoss	445000	USD
CY2018Q3	us-gaap	Net Income Loss NetIncomeLoss	-1803000	USD
CY2018Q4	us-gaap	Net Income Loss NetIncomeLoss	-3942000	USD
CY2018	us-gaap	Net Income Loss NetIncomeLoss	-4782000	USD
CY2018Q1	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.07
CY2018Q2	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.06
CY2018Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-0.23
CY2018Q4	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-0.51
CY2018	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-0.62
CY2018Q1	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.07
CY2018Q2	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.06
CY2018Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-0.23
CY2018Q4	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-0.51
CY2018	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-0.62

Files In Submission

Name	View Source	Status
0001026655-21-000003-index-headers.html	Edgar Link	pending
0001026655-21-000003-index.html	Edgar Link	pending
0001026655-21-000003.txt	Edgar Link	pending
0001026655-21-000003-xbrl.zip	Edgar Link	pending
cmt-20201231.xsd	Edgar Link	pending
cmt-20201231_cal.xml	Edgar Link	unprocessable
cmt-20201231_def.xml	Edgar Link	unprocessable
cmt-20201231_lab.xml	Edgar Link	unprocessable
cmt-20201231_pre.xml	Edgar Link	unprocessable
cmt2020123110k.htm	Edgar Link	pending
cmt2020123110k_htm.xml	Edgar Link	completed
ex21.htm	Edgar Link	pending
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FilingSummary.xml	Edgar Link	unprocessable
Financial_Report.xlsx	Edgar Link	pending
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$CMT
CORE MOLDING TECHNOLOGIES INC Stock $cmt

2020 Form 10-K Financial Statement

#000102665521000003 Filed on March 11, 2021

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$CMT CORE MOLDING TECHNOLOGIES INC Stock $cmt

2020 Form 10-K Financial Statement

#000102665521000003 Filed on March 11, 2021

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$CMT
CORE MOLDING TECHNOLOGIES INC Stock $cmt