$LMB
Limbach Holdings, Inc. Stock $lmb

$lmb Overview Financials Valuation SEC Filings Company Website

2019 Q4 Form 10-K Financial Statement

#000162828021005652 Filed on March 25, 2021

Income Statement

Concept	2019 Q4	2019 Q1	2019
Revenue	$138.9M	$133.7M	$553.3M
YoY Change	-8.26%	10.95%	1.25%
Cost Of Revenue	$122.2M	$114.1M	$481.5M
YoY Change	-7.21%	6.4%	-1.16%
Gross Profit	$16.70M	$19.62M	$71.88M
YoY Change	-15.23%	47.69%	20.94%
Gross Profit Margin	12.02%	14.67%	12.99%
Selling, General & Admin	$13.50M	$16.05M	$63.17M
YoY Change	-6.25%	2.42%	10.65%
% of Gross Profit	80.84%	81.77%	87.88%
Research & Development
YoY Change
% of Gross Profit
Depreciation & Amortization	$2.060M	$1.413M	$6.286M
YoY Change	41.1%	3.06%	10.61%
% of Gross Profit	12.34%	7.2%	8.75%
Operating Expenses	$13.60M	$16.22M	$63.81M
YoY Change	-8.11%	1.37%	9.34%
Operating Profit	$3.100M	$3.403M	$8.067M
YoY Change	-36.73%	-225.39%	653.93%
Interest Expense	-$1.500M	-$800.0K	-$5.300M
YoY Change	50.0%	0.0%	60.61%
% of Operating Profit	-48.39%	-23.51%	-65.7%
Other Income/Expense, Net		-$821.0K	-$10.12M
YoY Change		9.03%	185.18%
Pretax Income	$1.500M	$2.582M	-$2.057M
YoY Change	-59.46%	-174.47%	-17.06%
Income Tax	$500.0K	$735.0K	-$282.0K
% Of Pretax Income	33.33%	28.47%
Net Earnings	$1.000M	$1.847M	-$1.775M
YoY Change	-70.59%	-176.2%	-3.79%
Net Earnings / Revenue	0.72%	1.38%	-0.32%
Basic Earnings Per Share		$0.24	-$0.23
Diluted Earnings Per Share	$129.9K	$0.24	-$0.23
COMMON SHARES
Basic Shares Outstanding		7.643M shares	7.662M shares
Diluted Shares Outstanding		7.668M shares	7.662M shares

Balance Sheet

Concept	2019 Q4	2019 Q1	2019
SHORT-TERM ASSETS
Cash & Short-Term Investments	$8.300M	$3.800M	$8.300M
YoY Change	418.75%	850.0%	418.75%
Cash & Equivalents	$8.344M	$3.804M	$8.300M
Short-Term Investments
Other Short-Term Assets	$4.660M	$4.630M	$4.800M
YoY Change	-86.63%	5.23%	-86.29%
Inventory	$0.00	$34.20M	$0.00
Prepaid Expenses
Receivables	$105.1M	$105.1M	$182.3M
Other Receivables	$0.00	$0.00	$0.00
Total Short-Term Assets	$195.4M	$174.8M	$195.4M
YoY Change	-4.69%	8.17%	-4.68%
LONG-TERM ASSETS
Property, Plant & Equipment	$42.30M	$20.60M	$42.30M
YoY Change	106.07%	12.54%	106.34%
Goodwill	$6.129M	$10.49M
YoY Change	-41.56%
Intangibles	$12.31M	$12.78M
YoY Change	-4.96%
Long-Term Investments
YoY Change
Other Assets	$668.0K	$1.686M	$5.500M
YoY Change	146.49%	-67.58%	17.02%
Total Long-Term Assets	$66.24M	$49.25M	$66.20M
YoY Change	36.16%	2.81%	36.21%
TOTAL ASSETS
Total Short-Term Assets	$195.4M	$174.8M	$195.4M
Total Long-Term Assets	$66.24M	$49.25M	$66.20M
Total Assets	$261.6M	$224.1M	$261.6M
YoY Change	3.15%	6.95%	3.15%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable	$86.27M	$70.71M	$86.30M
YoY Change	16.02%	13.87%	15.99%
Accrued Expenses	$20.05M	$22.30M	$23.80M
YoY Change	-64.33%	-15.85%	-54.67%
Deferred Revenue	$42.37M	$42.30M
YoY Change
Short-Term Debt	$0.00	$0.00	$0.00
YoY Change			-100.0%
Long-Term Debt Due	$4.425M	$2.138M	$4.400M
YoY Change	40.88%	-70.71%	41.94%
Total Short-Term Liabilities	$156.9M	$139.5M	$156.9M
YoY Change	-13.87%	7.94%	-13.84%
LONG-TERM LIABILITIES
Long-Term Debt	$38.87M	$34.40M	$38.90M
YoY Change	64.6%	-2.26%	64.83%
Other Long-Term Liabilities	$763.0K	$580.0K	$19.00M
YoY Change	-49.6%	-42.0%	1166.67%
Total Long-Term Liabilities	$39.63M	$34.98M	$57.90M
YoY Change	57.72%	-3.36%	130.68%
TOTAL LIABILITIES
Total Short-Term Liabilities	$156.9M	$139.5M	$156.9M
Total Long-Term Liabilities	$39.63M	$34.98M	$57.90M
Total Liabilities	$214.7M	$175.2M	$214.7M
YoY Change	3.61%	5.91%	3.57%
SHAREHOLDERS EQUITY
Retained Earnings	-$9.688M	-$6.066M
YoY Change	15.0%
Common Stock	$1.000K	$1.000K
YoY Change	0.0%
Preferred Stock
YoY Change
Treasury Stock (at cost)
YoY Change
Treasury Stock Shares
Shareholders Equity	$46.87M	$49.09M	$46.90M
YoY Change
Total Liabilities & Shareholders Equity	$261.6M	$224.1M	$261.6M
YoY Change	3.15%	6.95%	3.15%

Cashflow Statement

Concept	2019 Q4	2019 Q1	2019
OPERATING ACTIVITIES
Net Income	$1.000M	$1.847M	-$1.775M
YoY Change	-70.59%	-176.2%	-3.79%
Depreciation, Depletion And Amortization	$2.060M	$1.413M	$6.286M
YoY Change	41.1%	3.06%	10.61%
Cash From Operating Activities	$16.65M	-$4.132M	-$926.0K
YoY Change	-27.92%	5483.78%	-103.66%
INVESTING ACTIVITIES
Capital Expenditures	-$470.0K	$584.0K	$2.663M
YoY Change	9.3%	-24.65%	-31.31%
Acquisitions
YoY Change
Other Investing Activities	$20.00K	$10.00K	$170.0K
YoY Change	-50.0%	-85.71%	-15.0%
Cash From Investing Activities	-$450.0K	-$571.0K	-$2.491M
YoY Change	15.38%	-18.78%	-32.31%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net
YoY Change
Debt Paid & Issued, Net		$250.0K
YoY Change		0.0%
Cash From Financing Activities	-8.630M	$6.888M	$10.14M
YoY Change	-60.08%	1209.51%	-149.12%
NET CHANGE
Cash From Operating Activities	16.65M	-$4.132M	-$926.0K
Cash From Investing Activities	-450.0K	-$571.0K	-$2.491M
Cash From Financing Activities	-8.630M	$6.888M	$10.14M
Net Change In Cash	7.570M	$2.185M	$6.725M
YoY Change	594.5%	-970.52%	577.24%
FREE CASH FLOW
Cash From Operating Activities	$16.65M	-$4.132M	-$926.0K
Capital Expenditures	-$470.0K	$584.0K	$2.663M
Free Cash Flow	$17.12M	-$4.716M	-$3.589M
YoY Change	-27.24%	455.48%	-116.74%

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value	Unit
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CY2019	us-gaap	Gain Loss On Sale Of Property Plant Equipment GainLossOnSaleOfPropertyPlantEquipment	57000	USD
CY2020	us-gaap	Fair Value Adjustment Of Warrants FairValueAdjustmentOfWarrants	1634000	USD
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CY2019	us-gaap	Gain Loss On Sale Of Derivatives GainLossOnSaleOfDerivatives	388000	USD
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CY2019	us-gaap	Other Expenses OtherExpenses	10124000	USD
CY2020	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	6989000	USD
CY2019	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	-2057000	USD
CY2020	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	1182000	USD
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CY2019	us-gaap	Net Income Loss NetIncomeLoss	-1775000	USD
CY2020	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.74
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CY2020	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	8065464	shares
CY2019	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	7662362	shares
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CY2020	us-gaap	Number Of Operating Segments NumberOfOperatingSegments	2	segment
CY2020	lmb	Service Period ServicePeriod	P2Y
CY2020	us-gaap	Use Of Estimates UseOfEstimates	<div style="margin-top:10pt;text-align:justify"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:700;line-height:120%">Use of Estimates</span></div><div style="margin-top:10pt;text-align:justify"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">The preparation of the consolidated financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the amounts reported in the consolidated financial statements for assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements, the reported amounts of revenues and expenses during the reported period, and the accompanying notes. Management believes that its most significant estimates and assumptions have been based on reasonable and supportable assumptions and the resulting estimates are reasonable for use in the preparation of the consolidated financial statements. The Company’s significant estimates include estimates associated with revenue recognition on construction contracts, costs incurred through each balance sheet date, impairment of goodwill, intangibles, property and equipment, fair valuation in business combinations, insurance reserves, income tax valuation allowances, and contingencies. If the underlying estimates and assumptions upon which the consolidated financial statements are based change in the future, actual amounts may differ from those included in the accompanying consolidated financial statements.</span></div>
CY2020Q4	us-gaap	Cash Fdic Insured Amount CashFDICInsuredAmount	250000	USD
CY2020Q4	us-gaap	Cash Uninsured Amount CashUninsuredAmount	41900000	USD
CY2019Q4	us-gaap	Cash Uninsured Amount CashUninsuredAmount	8100000	USD
CY2020	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	-8627000	USD
CY2019	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	-6285000	USD
CY2020Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	42147000	USD
CY2019Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	8344000	USD
CY2020Q4	us-gaap	Restricted Cash Current RestrictedCashCurrent	113000	USD
CY2019Q4	us-gaap	Restricted Cash Current RestrictedCashCurrent	113000	USD
CY2020Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	42260000	USD
CY2019Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	8457000	USD
CY2020	us-gaap	Impairment Of Intangible Assets Excluding Goodwill ImpairmentOfIntangibleAssetsExcludingGoodwill	0	USD
CY2019	us-gaap	Impairment Of Intangible Assets Excluding Goodwill ImpairmentOfIntangibleAssetsExcludingGoodwill	0	USD
CY2020	lmb	Increase Decreasein Billings In Excess Of Costs And Estimated Earnings On Contracts IncreaseDecreaseinBillingsInExcessOfCostsAndEstimatedEarningsOnContracts	5358000	USD
CY2020Q4	us-gaap	Contract With Customer Asset Accumulated Allowance For Credit Loss ContractWithCustomerAssetAccumulatedAllowanceForCreditLoss	628000	USD
CY2019Q4	us-gaap	Contract With Customer Asset Accumulated Allowance For Credit Loss ContractWithCustomerAssetAccumulatedAllowanceForCreditLoss	1708000	USD
CY2020	lmb	Increase Decreasein Provisionfor Losson Contracts IncreaseDecreaseinProvisionforLossonContracts	-1080000	USD
CY2020Q4	us-gaap	Contract With Customer Liability Current ContractWithCustomerLiabilityCurrent	46648000	USD
CY2020	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	4587763	shares
CY2019	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	4672959	shares
CY2020Q4	lmb	Numberof Projects NumberofProjects	15	project
CY2020	us-gaap	Net Income Loss NetIncomeLoss	5807000	USD
CY2019	us-gaap	Net Income Loss NetIncomeLoss	-1775000	USD
CY2020	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	7865000	shares
CY2019	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	7662000	shares
CY2020	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	8065000	shares
CY2019	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	7662000	shares
CY2020	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.74
CY2019	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-0.23
CY2020	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.72
CY2019	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-0.23
CY2019Q4	us-gaap	Contract With Customer Liability Current ContractWithCustomerLiabilityCurrent	42370000	USD
CY2020	dei	Document Type DocumentType	10-K
CY2020	dei	Amendment Flag AmendmentFlag	false
CY2020	dei	Document Period End Date DocumentPeriodEndDate	2020-12-31
CY2020	us-gaap	Number Of Operating Segments NumberOfOperatingSegments	2	segment
CY2020	us-gaap	Number Of Operating Segments NumberOfOperatingSegments	2	segment
CY2020	us-gaap	Increase Decrease In Contract With Customer Liability IncreaseDecreaseInContractWithCustomerLiability	4278000	USD
CY2020Q4	us-gaap	Accounts Receivable Gross Current AccountsReceivableGrossCurrent	86033000	USD
CY2019Q1	us-gaap	Accounts Receivable Gross Current AccountsReceivableGrossCurrent	105373000	USD
CY2020Q4	us-gaap	Allowance For Doubtful Accounts Receivable AllowanceForDoubtfulAccountsReceivable	266000	USD
CY2019Q1	us-gaap	Allowance For Doubtful Accounts Receivable AllowanceForDoubtfulAccountsReceivable	306000	USD
CY2020Q4	us-gaap	Accounts Receivable Net Current AccountsReceivableNetCurrent	85767000	USD
CY2019Q1	us-gaap	Accounts Receivable Net Current AccountsReceivableNetCurrent	105067000	USD
CY2020Q4	lmb	Contract With Customer Asset Net Current Costs And Estimated Earnings In Excess Of Billings On Contracts ContractWithCustomerAssetNetCurrentCostsAndEstimatedEarningsInExcessOfBillingsOnContracts	31894000	USD
CY2019Q4	lmb	Contract With Customer Asset Net Current Costs And Estimated Earnings In Excess Of Billings On Contracts ContractWithCustomerAssetNetCurrentCostsAndEstimatedEarningsInExcessOfBillingsOnContracts	44315000	USD
CY2020	lmb	Increase Decreasein Costsand Estimated Earnings In Excess Of Billings On Contracts IncreaseDecreaseinCostsandEstimatedEarningsInExcessOfBillingsOnContracts	-12421000	USD
CY2020	dei	Entity Voluntary Filers EntityVoluntaryFilers	No
CY2020	dei	Document Fiscal Year Focus DocumentFiscalYearFocus	2020
CY2020	dei	Document Fiscal Period Focus DocumentFiscalPeriodFocus	FY
CY2020	dei	Entity Registrant Name EntityRegistrantName	Limbach Holdings, Inc.
CY2020	dei	Entity Central Index Key EntityCentralIndexKey	0001606163
CY2020	dei	Current Fiscal Year End Date CurrentFiscalYearEndDate	--12-31
CY2020	dei	Entity Well Known Seasoned Issuer EntityWellKnownSeasonedIssuer	No
CY2020Q4	lmb	Contract With Customer Asset Net Current Retainage Receivable ContractWithCustomerAssetNetCurrentRetainageReceivable	35204000	USD
CY2019Q4	lmb	Contract With Customer Asset Net Current Retainage Receivable ContractWithCustomerAssetNetCurrentRetainageReceivable	32873000	USD
CY2020	lmb	Increase Decreasein Contract Receivable Retainage IncreaseDecreaseinContractReceivableRetainage	2331000	USD
CY2020Q4	us-gaap	Contract With Customer Asset Net Current ContractWithCustomerAssetNetCurrent	67098000	USD
CY2019Q4	us-gaap	Contract With Customer Asset Net Current ContractWithCustomerAssetNetCurrent	77188000	USD
CY2020	us-gaap	Increase Decrease In Contract With Customer Asset IncreaseDecreaseInContractWithCustomerAsset	-10090000	USD
CY2020	lmb	Retainage Receivable Percentage RetainageReceivablePercentage	0.10
CY2020Q4	lmb	Net Amount Of Unresolved Change Orders And Claims NetAmountOfUnresolvedChangeOrdersAndClaims	33600000	USD
CY2019Q4	lmb	Net Amount Of Unresolved Change Orders And Claims NetAmountOfUnresolvedChangeOrdersAndClaims	38400000	USD
CY2020Q4	lmb	Billings In Excess Of Costs And Estimated Earnings On Contracts BillingsInExcessOfCostsAndEstimatedEarningsOnContracts	46020000	USD
CY2019Q4	lmb	Billings In Excess Of Costs And Estimated Earnings On Contracts BillingsInExcessOfCostsAndEstimatedEarningsOnContracts	40662000	USD
CY2020	dei	Entity Current Reporting Status EntityCurrentReportingStatus	Yes
CY2020	dei	Entity Filer Category EntityFilerCategory	Non-accelerated Filer
CY2020Q2	dei	Entity Public Float EntityPublicFloat	25331995	USD
CY2021Q1	dei	Entity Common Stock Shares Outstanding EntityCommonStockSharesOutstanding	10248405	shares
CY2020	dei	Entity Shell Company EntityShellCompany	false
CY2020	dei	Entity Emerging Growth Company EntityEmergingGrowthCompany	false
CY2020	dei	Entity Small Business EntitySmallBusiness	true
CY2020	dei	Document Transition Report DocumentTransitionReport	false
CY2020	lmb	Icfr Auditor Attestation Flag ICFRAuditorAttestationFlag	false
CY2020Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	42147000	USD
CY2019Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	8344000	USD
CY2020Q4	us-gaap	Restricted Cash Current RestrictedCashCurrent	113000	USD
CY2019Q4	us-gaap	Restricted Cash Current RestrictedCashCurrent	113000	USD
CY2020Q4	us-gaap	Accounts Receivable Net Current AccountsReceivableNetCurrent	85767000	USD
CY2019Q4	us-gaap	Accounts Receivable Net Current AccountsReceivableNetCurrent	105067000	USD
CY2020Q4	us-gaap	Contract With Customer Asset Net Current ContractWithCustomerAssetNetCurrent	67098000	USD
CY2019Q4	us-gaap	Contract With Customer Asset Net Current ContractWithCustomerAssetNetCurrent	77188000	USD
CY2020Q4	us-gaap	Due From Joint Ventures Current DueFromJointVenturesCurrent	10000	USD
CY2019Q4	us-gaap	Due From Joint Ventures Current DueFromJointVenturesCurrent	8000	USD
CY2020Q4	us-gaap	Other Assets Current OtherAssetsCurrent	4282000	USD
CY2019Q4	us-gaap	Other Assets Current OtherAssetsCurrent	4660000	USD
CY2020Q4	us-gaap	Assets Current AssetsCurrent	199417000	USD
CY2019Q4	us-gaap	Assets Current AssetsCurrent	195380000	USD
CY2020Q4	lmb	Property Plantand Equipmentand Finance Lease Rightof Use Assetafter Accumulated Depreciationand Amortization PropertyPlantandEquipmentandFinanceLeaseRightofUseAssetafterAccumulatedDepreciationandAmortization	19700000	USD
CY2019Q4	lmb	Property Plantand Equipmentand Finance Lease Rightof Use Assetafter Accumulated Depreciationand Amortization PropertyPlantandEquipmentandFinanceLeaseRightofUseAssetafterAccumulatedDepreciationandAmortization	21287000	USD
CY2020Q4	us-gaap	Intangible Assets Net Excluding Goodwill IntangibleAssetsNetExcludingGoodwill	11681000	USD
CY2019Q4	us-gaap	Intangible Assets Net Excluding Goodwill IntangibleAssetsNetExcludingGoodwill	12311000	USD
CY2020Q4	us-gaap	Goodwill Goodwill	6129000	USD
CY2019Q4	us-gaap	Goodwill Goodwill	6129000	USD
CY2020Q4	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	18751000	USD
CY2019Q4	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	21056000	USD
CY2020Q4	us-gaap	Deferred Income Tax Assets Net DeferredIncomeTaxAssetsNet	6087000	USD
CY2019Q4	us-gaap	Deferred Income Tax Assets Net DeferredIncomeTaxAssetsNet	4786000	USD
CY2020Q4	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	392000	USD
CY2019Q4	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	668000	USD
CY2020Q4	us-gaap	Assets Assets	262157000	USD
CY2019Q4	us-gaap	Assets Assets	261617000	USD
CY2020Q4	us-gaap	Long Term Debt Current LongTermDebtCurrent	6536000	USD
CY2019Q4	us-gaap	Long Term Debt Current LongTermDebtCurrent	4425000	USD
CY2020Q4	us-gaap	Operating Lease Liability Current OperatingLeaseLiabilityCurrent	3929000	USD
CY2019Q4	us-gaap	Operating Lease Liability Current OperatingLeaseLiabilityCurrent	3750000	USD
CY2020Q4	us-gaap	Accounts Payable Current AccountsPayableCurrent	66763000	USD
CY2019Q4	us-gaap	Accounts Payable Current AccountsPayableCurrent	86267000	USD
CY2020Q4	us-gaap	Contract With Customer Liability Current ContractWithCustomerLiabilityCurrent	46648000	USD
CY2019Q4	us-gaap	Contract With Customer Liability Current ContractWithCustomerLiabilityCurrent	42370000	USD
CY2020Q4	us-gaap	Accrued Income Taxes Current AccruedIncomeTaxesCurrent	1671000	USD
CY2019Q4	us-gaap	Accrued Income Taxes Current AccruedIncomeTaxesCurrent	12000	USD
CY2020Q4	us-gaap	Accrued Liabilities And Other Liabilities AccruedLiabilitiesAndOtherLiabilities	24747000	USD
CY2019Q4	us-gaap	Accrued Liabilities And Other Liabilities AccruedLiabilitiesAndOtherLiabilities	20045000	USD
CY2020Q4	us-gaap	Liabilities Current LiabilitiesCurrent	150294000	USD
CY2019Q4	us-gaap	Liabilities Current LiabilitiesCurrent	156869000	USD
CY2020Q4	us-gaap	Long Term Debt Noncurrent LongTermDebtNoncurrent	36513000	USD
CY2019Q4	us-gaap	Long Term Debt Noncurrent LongTermDebtNoncurrent	38868000	USD
CY2020Q4	us-gaap	Operating Lease Liability Noncurrent OperatingLeaseLiabilityNoncurrent	15459000	USD
CY2019Q4	us-gaap	Operating Lease Liability Noncurrent OperatingLeaseLiabilityNoncurrent	18247000	USD
CY2020Q4	us-gaap	Other Liabilities Noncurrent OtherLiabilitiesNoncurrent	6159000	USD
CY2019Q4	us-gaap	Other Liabilities Noncurrent OtherLiabilitiesNoncurrent	763000	USD
CY2020Q4	us-gaap	Liabilities Liabilities	208425000	USD
CY2019Q4	us-gaap	Liabilities Liabilities	214747000	USD
CY2020Q4	us-gaap	Commitments And Contingencies CommitmentsAndContingencies		USD
CY2019Q4	us-gaap	Commitments And Contingencies CommitmentsAndContingencies		USD
CY2020Q4	us-gaap	Temporary Equity Carrying Amount Attributable To Parent TemporaryEquityCarryingAmountAttributableToParent	0	USD
CY2019Q4	us-gaap	Temporary Equity Carrying Amount Attributable To Parent TemporaryEquityCarryingAmountAttributableToParent	0	USD
CY2019Q4	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	0.0001
CY2019Q4	lmb	Numberof Projects NumberofProjects	16	project
CY2020Q4	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	0.0001
CY2019Q4	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	100000000	shares
CY2020Q4	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	100000000	shares
CY2020Q4	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	7926137	shares
CY2020Q4	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	7926137	shares
CY2019Q4	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	7688958	shares
CY2019Q4	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	7688958	shares
CY2020Q4	us-gaap	Common Stock Value CommonStockValue	1000	USD
CY2019Q4	us-gaap	Common Stock Value CommonStockValue	1000	USD
CY2020Q4	us-gaap	Additional Paid In Capital AdditionalPaidInCapital	57612000	USD
CY2019Q4	us-gaap	Additional Paid In Capital AdditionalPaidInCapital	56557000	USD
CY2020Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	-3881000	USD
CY2019Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	-9688000	USD
CY2020Q4	us-gaap	Stockholders Equity StockholdersEquity	53732000	USD
CY2019Q4	us-gaap	Stockholders Equity StockholdersEquity	46870000	USD
CY2020Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	262157000	USD
CY2019Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	261617000	USD
CY2020	us-gaap	Revenues Revenues	568209000	USD
CY2019	us-gaap	Revenues Revenues	553334000	USD
CY2020	us-gaap	Cost Of Revenue CostOfRevenue	486823000	USD
CY2019	us-gaap	Cost Of Revenue CostOfRevenue	481457000	USD
CY2020	us-gaap	Gross Profit GrossProfit	81386000	USD
CY2019	us-gaap	Gross Profit GrossProfit	71877000	USD
CY2020	us-gaap	Selling General And Administrative Expense SellingGeneralAndAdministrativeExpense	63601000	USD
CY2019	us-gaap	Selling General And Administrative Expense SellingGeneralAndAdministrativeExpense	63168000	USD
CY2020	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	630000	USD
CY2019	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	642000	USD
CY2020	us-gaap	Operating Expenses OperatingExpenses	64231000	USD
CY2019	us-gaap	Operating Expenses OperatingExpenses	63810000	USD
CY2020	us-gaap	Operating Income Loss OperatingIncomeLoss	17155000	USD
CY2019	us-gaap	Operating Income Loss OperatingIncomeLoss	8067000	USD
CY2020Q4	lmb	Revenue Earned On Uncompleted Contracts RevenueEarnedOnUncompletedContracts	752564000	USD
CY2019Q4	lmb	Revenue Earned On Uncompleted Contracts RevenueEarnedOnUncompletedContracts	726215000	USD
CY2020Q4	lmb	Billings To Date On Contracts BillingsToDateOnContracts	766690000	USD
CY2019Q4	lmb	Billings To Date On Contracts BillingsToDateOnContracts	722562000	USD
CY2020Q4	lmb	Net Under Overbilling On Contracts NetUnderOverbillingOnContracts	14126000	USD
CY2019Q4	lmb	Net Under Overbilling On Contracts NetUnderOverbillingOnContracts	-3653000	USD
CY2020Q4	lmb	Costsin Excessof Billingsand Estimated Earningson Uncompleted Contracts CostsinExcessofBillingsandEstimatedEarningsonUncompletedContracts	31894000	USD
CY2019Q4	lmb	Costsin Excessof Billingsand Estimated Earningson Uncompleted Contracts CostsinExcessofBillingsandEstimatedEarningsonUncompletedContracts	44315000	USD
CY2020Q4	lmb	Billingsin Excessof Billingsand Estimated Earningson Uncompleted Contracts BillingsinExcessofBillingsandEstimatedEarningsonUncompletedContracts	46020000	USD
CY2019Q4	lmb	Billingsin Excessof Billingsand Estimated Earningson Uncompleted Contracts BillingsinExcessofBillingsandEstimatedEarningsonUncompletedContracts	40662000	USD
CY2020Q4	lmb	Net Under Overbilling On Contracts NetUnderOverbillingOnContracts	14126000	USD
CY2019Q4	lmb	Net Under Overbilling On Contracts NetUnderOverbillingOnContracts	-3653000	USD
CY2020	lmb	Revision In Contract Estimates Recorded Project Write Down RevisionInContractEstimatesRecordedProjectWriteDown	10400000	USD
CY2020Q4	lmb	Finance Lease Rightof Use Assetbefore Accumulated Amortization FinanceLeaseRightofUseAssetbeforeAccumulatedAmortization	11505000	USD
CY2019Q4	lmb	Finance Lease Rightof Use Assetbefore Accumulated Amortization FinanceLeaseRightofUseAssetbeforeAccumulatedAmortization	11081000	USD
CY2020Q4	lmb	Property Plantand Equipmentand Finance Lease Rightof Use Assetbefore Accumulated Depreciationand Amortization PropertyPlantandEquipmentandFinanceLeaseRightofUseAssetbeforeAccumulatedDepreciationandAmortization	41303000	USD
CY2019Q4	lmb	Property Plantand Equipmentand Finance Lease Rightof Use Assetbefore Accumulated Depreciationand Amortization PropertyPlantandEquipmentandFinanceLeaseRightofUseAssetbeforeAccumulatedDepreciationandAmortization	38035000	USD
CY2020Q4	lmb	Finance Lease Rightof Use Asset Accumulated Amortization FinanceLeaseRightofUseAssetAccumulatedAmortization	5263000	USD
CY2019Q4	lmb	Finance Lease Rightof Use Asset Accumulated Amortization FinanceLeaseRightofUseAssetAccumulatedAmortization	4669000	USD
CY2020Q4	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	16340000	USD
CY2019Q4	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	12079000	USD
CY2020Q4	lmb	Property Plantand Equipmentand Finance Lease Rightof Use Assetafter Accumulated Depreciationand Amortization PropertyPlantandEquipmentandFinanceLeaseRightofUseAssetafterAccumulatedDepreciationandAmortization	19700000	USD
CY2019Q4	lmb	Property Plantand Equipmentand Finance Lease Rightof Use Assetafter Accumulated Depreciationand Amortization PropertyPlantandEquipmentandFinanceLeaseRightofUseAssetafterAccumulatedDepreciationandAmortization	21287000	USD
CY2020	us-gaap	Depreciation Depreciation	5500000	USD
CY2019	us-gaap	Depreciation Depreciation	5600000	USD
CY2020	us-gaap	Goodwill Impairment Loss GoodwillImpairmentLoss	0	USD
CY2018Q4	us-gaap	Goodwill Goodwill	10488000	USD
CY2019	us-gaap	Goodwill Impairment Loss GoodwillImpairmentLoss	4359000	USD
CY2019Q4	us-gaap	Goodwill Goodwill	6129000	USD
CY2020	us-gaap	Goodwill Impairment Loss GoodwillImpairmentLoss	0	USD
CY2020Q4	us-gaap	Goodwill Goodwill	6129000	USD
CY2020Q4	us-gaap	Finite Lived Intangible Assets Gross FiniteLivedIntangibleAssetsGross	10070000	USD
CY2020Q4	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	8349000	USD
CY2020Q4	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	1721000	USD
CY2020Q4	us-gaap	Indefinite Lived Intangible Assets Excluding Goodwill IndefiniteLivedIntangibleAssetsExcludingGoodwill	9960000	USD
CY2020Q4	lmb	Intangible Assets Amortized Excluding Goodwill IntangibleAssetsAmortizedExcludingGoodwill	9960000	USD
CY2020Q4	us-gaap	Intangible Assets Gross Excluding Goodwill IntangibleAssetsGrossExcludingGoodwill	20030000	USD
CY2020Q4	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	8349000	USD
CY2020Q4	us-gaap	Intangible Assets Net Excluding Goodwill IntangibleAssetsNetExcludingGoodwill	11681000	USD
CY2019Q4	us-gaap	Finite Lived Intangible Assets Gross FiniteLivedIntangibleAssetsGross	10070000	USD
CY2019Q4	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	7719000	USD
CY2019Q4	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	2351000	USD
CY2019Q4	us-gaap	Indefinite Lived Intangible Assets Excluding Goodwill IndefiniteLivedIntangibleAssetsExcludingGoodwill	9960000	USD
CY2019Q4	lmb	Intangible Assets Amortized Excluding Goodwill IntangibleAssetsAmortizedExcludingGoodwill	9960000	USD
CY2019Q4	us-gaap	Intangible Assets Gross Excluding Goodwill IntangibleAssetsGrossExcludingGoodwill	20030000	USD
CY2019Q4	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	7719000	USD
CY2019Q4	us-gaap	Intangible Assets Net Excluding Goodwill IntangibleAssetsNetExcludingGoodwill	12311000	USD
CY2019	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	600000	USD
CY2020	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	600000	USD
CY2020Q4	us-gaap	Employee Related Liabilities Current EmployeeRelatedLiabilitiesCurrent	7975000	USD
CY2019Q4	us-gaap	Employee Related Liabilities Current EmployeeRelatedLiabilitiesCurrent	4999000	USD
CY2020Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Next Twelve Months FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths	379000	USD
CY2020Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Two FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo	304000	USD
CY2020Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Three FiniteLivedIntangibleAssetsAmortizationExpenseYearThree	245000	USD
CY2020Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Four FiniteLivedIntangibleAssetsAmortizationExpenseYearFour	198000	USD
CY2020Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Five FiniteLivedIntangibleAssetsAmortizationExpenseYearFive	161000	USD
CY2020Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense After Year Five FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearFive	434000	USD
CY2020Q4	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	1721000	USD
CY2020Q4	lmb	Accrued Bonus And Commissions Current AccruedBonusAndCommissionsCurrent	7652000	USD
CY2019Q4	lmb	Accrued Bonus And Commissions Current AccruedBonusAndCommissionsCurrent	448000	USD
CY2020Q4	us-gaap	Accrued Insurance Current AccruedInsuranceCurrent	1008000	USD
CY2019Q4	us-gaap	Accrued Insurance Current AccruedInsuranceCurrent	1543000	USD
CY2020Q4	lmb	Accrued Job Costs Current AccruedJobCostsCurrent	3131000	USD
CY2019Q4	lmb	Accrued Job Costs Current AccruedJobCostsCurrent	8563000	USD
CY2020Q4	us-gaap	Product Warranty Accrual Classified Current ProductWarrantyAccrualClassifiedCurrent	4056000	USD
CY2019Q4	us-gaap	Product Warranty Accrual Classified Current ProductWarrantyAccrualClassifiedCurrent	2886000	USD
CY2020Q4	us-gaap	Other Accrued Liabilities Current OtherAccruedLiabilitiesCurrent	925000	USD
CY2019Q4	us-gaap	Other Accrued Liabilities Current OtherAccruedLiabilitiesCurrent	1606000	USD
CY2020Q4	us-gaap	Accrued Liabilities Current AccruedLiabilitiesCurrent	24747000	USD
CY2019Q4	us-gaap	Accrued Liabilities Current AccruedLiabilitiesCurrent	20045000	USD
CY2020Q4	lmb	Social Security Tax Employer Deferral Cares Act SocialSecurityTaxEmployerDeferralCARESAct	6500000	USD
CY2020Q4	lmb	Long Term Debt And Finance Leases Maturities Repayments Of Principal In Next Twelve Months LongTermDebtAndFinanceLeasesMaturitiesRepaymentsOfPrincipalInNextTwelveMonths	6536000	USD
CY2020Q4	lmb	Long Term Debt And Finance Leases Maturities Repayments Of Principal In Year Two LongTermDebtAndFinanceLeasesMaturitiesRepaymentsOfPrincipalInYearTwo	37158000	USD
CY2020Q4	lmb	Long Term Debt And Finance Leases Maturities Repayments Of Principal In Year Five LongTermDebtAndFinanceLeasesMaturitiesRepaymentsOfPrincipalInYearFive	4000	USD
CY2019Q4	us-gaap	Standard Product Warranty Accrual StandardProductWarrantyAccrual	2886000	USD
CY2018Q4	us-gaap	Standard Product Warranty Accrual StandardProductWarrantyAccrual	2400000	USD
CY2020	us-gaap	Standard Product Warranty Accrual Warranties Issued StandardProductWarrantyAccrualWarrantiesIssued	687000	USD
CY2019	us-gaap	Standard Product Warranty Accrual Warranties Issued StandardProductWarrantyAccrualWarrantiesIssued	272000	USD
CY2020	us-gaap	Standard Product Warranty Accrual Preexisting Increase Decrease StandardProductWarrantyAccrualPreexistingIncreaseDecrease	1856000	USD
CY2019	us-gaap	Standard Product Warranty Accrual Preexisting Increase Decrease StandardProductWarrantyAccrualPreexistingIncreaseDecrease	1691000	USD
CY2020	us-gaap	Standard Product Warranty Accrual Payments StandardProductWarrantyAccrualPayments	1373000	USD
CY2019	us-gaap	Standard Product Warranty Accrual Payments StandardProductWarrantyAccrualPayments	1477000	USD
CY2020Q4	us-gaap	Standard Product Warranty Accrual StandardProductWarrantyAccrual	4056000	USD
CY2019Q4	us-gaap	Standard Product Warranty Accrual StandardProductWarrantyAccrual	2886000	USD
CY2020Q4	lmb	Long Term Debt And Finance Leases Maturities Repayments Of Principal In Year Three LongTermDebtAndFinanceLeasesMaturitiesRepaymentsOfPrincipalInYearThree	1263000	USD
CY2020Q4	lmb	Long Term Debt And Finance Leases Maturities Repayments Of Principal In Year Four LongTermDebtAndFinanceLeasesMaturitiesRepaymentsOfPrincipalInYearFour	498000	USD
CY2020Q4	us-gaap	Finance Lease Liability FinanceLeaseLiability	6459000	USD
CY2019Q1	us-gaap	Finance Lease Liability FinanceLeaseLiability	6585000	USD
CY2020Q4	lmb	Longterm Debt Grossand Lease Obligation LongtermDebtGrossandLeaseObligation	45459000	USD
CY2019Q1	lmb	Longterm Debt Grossand Lease Obligation LongtermDebtGrossandLeaseObligation	47585000	USD
CY2020Q4	us-gaap	Long Term Debt And Capital Lease Obligations Current LongTermDebtAndCapitalLeaseObligationsCurrent	6536000	USD
CY2019Q1	us-gaap	Long Term Debt And Capital Lease Obligations Current LongTermDebtAndCapitalLeaseObligationsCurrent	4425000	USD
CY2020Q4	us-gaap	Debt Instrument Unamortized Discount Premium And Debt Issuance Costs Net DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNet	2410000	USD
CY2019Q1	us-gaap	Debt Instrument Unamortized Discount Premium And Debt Issuance Costs Net DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNet	4292000	USD
CY2020Q4	us-gaap	Long Term Debt And Capital Lease Obligations LongTermDebtAndCapitalLeaseObligations	36513000	USD
CY2019Q1	us-gaap	Long Term Debt And Capital Lease Obligations LongTermDebtAndCapitalLeaseObligations	38868000	USD
CY2020Q4	lmb	Longterm Debt Grossand Lease Obligation LongtermDebtGrossandLeaseObligation	45459000	USD
CY2017Q4	lmb	Amount Required To Remit Dueto Excess Cash Flow Percentage AmountRequiredToRemitDuetoExcessCashFlowPercentage	0.50
CY2020	lmb	Percentage Of Number Of Shares PercentageOfNumberOfShares	0.02
CY2020Q4	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	100000000	shares
CY2020Q4	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	0.0001
CY2020Q4	us-gaap	Class Of Warrant Or Right Outstanding ClassOfWarrantOrRightOutstanding	4576799	shares
CY2019Q4	us-gaap	Class Of Warrant Or Right Outstanding ClassOfWarrantOrRightOutstanding	4576799	shares
CY2019	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	-282000	USD
CY2020	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	1274000	USD
CY2019	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	69000	USD
CY2020	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	1209000	USD
CY2019	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	258000	USD
CY2020	us-gaap	Current Federal State And Local Tax Expense Benefit CurrentFederalStateAndLocalTaxExpenseBenefit	2483000	USD
CY2019	us-gaap	Current Federal State And Local Tax Expense Benefit CurrentFederalStateAndLocalTaxExpenseBenefit	327000	USD
CY2020	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	-643000	USD
CY2019	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	-356000	USD
CY2020	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	-658000	USD
CY2019	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	-253000	USD
CY2020	us-gaap	Deferred Federal State And Local Tax Expense Benefit DeferredFederalStateAndLocalTaxExpenseBenefit	-1301000	USD
CY2019	us-gaap	Deferred Federal State And Local Tax Expense Benefit DeferredFederalStateAndLocalTaxExpenseBenefit	-609000	USD
CY2020	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	1182000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	0	USD
CY2019Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	0	USD
CY2020Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Accrued Liabilities DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAccruedLiabilities	2096000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Accrued Liabilities DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAccruedLiabilities	850000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Allowance For Doubtful Accounts DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAllowanceForDoubtfulAccounts	71000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Allowance For Doubtful Accounts DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAllowanceForDoubtfulAccounts	81000	USD
CY2020Q4	lmb	Deferred Tax Assets Intangible Assets DeferredTaxAssetsIntangibleAssets	784000	USD
CY2019Q4	lmb	Deferred Tax Assets Intangible Assets DeferredTaxAssetsIntangibleAssets	987000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Goodwill And Intangible Assets DeferredTaxAssetsGoodwillAndIntangibleAssets	3746000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Goodwill And Intangible Assets DeferredTaxAssetsGoodwillAndIntangibleAssets	4257000	USD
CY2020Q4	lmb	Startup Costs StartupCosts	91000	USD
CY2019Q4	lmb	Startup Costs StartupCosts	101000	USD
CY2020Q4	lmb	Deferred Tax Assets Percentage Of Completion DeferredTaxAssetsPercentageOfCompletion	0	USD
CY2019Q4	lmb	Deferred Tax Assets Percentage Of Completion DeferredTaxAssetsPercentageOfCompletion	105000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Share Based Compensation Cost DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost	501000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Share Based Compensation Cost DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost	679000	USD
CY2020Q4	lmb	Deferred Tax Assets Net Operating Loss And Tax Credit Carry Forwards DeferredTaxAssetsNetOperatingLossAndTaxCreditCarryForwards	0	USD
CY2019Q4	lmb	Deferred Tax Assets Net Operating Loss And Tax Credit Carry Forwards DeferredTaxAssetsNetOperatingLossAndTaxCreditCarryForwards	841000	USD
CY2020Q4	us-gaap	Deferred Tax Asset Interest Carryforward DeferredTaxAssetInterestCarryforward	0	USD
CY2019Q4	us-gaap	Deferred Tax Asset Interest Carryforward DeferredTaxAssetInterestCarryforward	507000	USD
CY2020Q4	lmb	Deferred Tax Assets Lease Liability DeferredTaxAssetsLeaseLiability	5268000	USD
CY2019Q4	lmb	Deferred Tax Assets Lease Liability DeferredTaxAssetsLeaseLiability	5960000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Employee Compensation DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsEmployeeCompensation	2030000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Employee Compensation DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsEmployeeCompensation	6000	USD
CY2020Q4	lmb	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Share Based Compensation Warrants DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationWarrants	535000	USD
CY2019Q4	lmb	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Share Based Compensation Warrants DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationWarrants	101000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Other DeferredTaxAssetsOther	0	USD
CY2019Q4	us-gaap	Deferred Tax Assets Other DeferredTaxAssetsOther	69000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Gross DeferredTaxAssetsGross	15122000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Gross DeferredTaxAssetsGross	14544000	USD
CY2020Q4	lmb	Deferred Tax Liabilities Finitelived Fixed Assets DeferredTaxLiabilitiesFinitelivedFixedAssets	3813000	USD
CY2019Q4	lmb	Deferred Tax Liabilities Finitelived Fixed Assets DeferredTaxLiabilitiesFinitelivedFixedAssets	3897000	USD
CY2020Q4	us-gaap	Deferred Tax Liabilities Leasing Arrangements DeferredTaxLiabilitiesLeasingArrangements	4975000	USD
CY2019Q4	us-gaap	Deferred Tax Liabilities Leasing Arrangements DeferredTaxLiabilitiesLeasingArrangements	5586000	USD
CY2020Q4	us-gaap	Deferred Tax Liabilities Deferred Expense Deferred Financing Costs DeferredTaxLiabilitiesDeferredExpenseDeferredFinancingCosts	155000	USD
CY2019Q4	us-gaap	Deferred Tax Liabilities Deferred Expense Deferred Financing Costs DeferredTaxLiabilitiesDeferredExpenseDeferredFinancingCosts	275000	USD
CY2020Q4	lmb	Deferred Tax Liabilities Percentage Of Completion DeferredTaxLiabilitiesPercentageOfCompletion	92000	USD
CY2019Q4	lmb	Deferred Tax Liabilities Percentage Of Completion DeferredTaxLiabilitiesPercentageOfCompletion	0	USD
CY2020Q4	us-gaap	Deferred Income Tax Liabilities DeferredIncomeTaxLiabilities	9035000	USD
CY2019Q4	us-gaap	Deferred Income Tax Liabilities DeferredIncomeTaxLiabilities	9758000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Liabilities Net DeferredTaxAssetsLiabilitiesNet	6087000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Liabilities Net DeferredTaxAssetsLiabilitiesNet	4786000	USD
CY2020	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.210
CY2019	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.210
CY2020	us-gaap	Effective Income Tax Rate Reconciliation State And Local Income Taxes EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes	0.063
CY2019	us-gaap	Effective Income Tax Rate Reconciliation State And Local Income Taxes EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes	0.008
CY2020	us-gaap	Effective Income Tax Rate Reconciliation Change In Enacted Tax Rate EffectiveIncomeTaxRateReconciliationChangeInEnactedTaxRate	-0.006
CY2019	us-gaap	Effective Income Tax Rate Reconciliation Change In Enacted Tax Rate EffectiveIncomeTaxRateReconciliationChangeInEnactedTaxRate	-0.080
CY2020	us-gaap	Effective Income Tax Rate Reconciliation Share Based Compensation Excess Tax Benefit Percent EffectiveIncomeTaxRateReconciliationShareBasedCompensationExcessTaxBenefitPercent	0.020
CY2019	us-gaap	Effective Income Tax Rate Reconciliation Share Based Compensation Excess Tax Benefit Percent EffectiveIncomeTaxRateReconciliationShareBasedCompensationExcessTaxBenefitPercent	-0.075
CY2020	lmb	Effective Income Tax Rate Reconciliation Return To Provision Adjustment EffectiveIncomeTaxRateReconciliationReturnToProvisionAdjustment	-0.007
CY2019	lmb	Effective Income Tax Rate Reconciliation Return To Provision Adjustment EffectiveIncomeTaxRateReconciliationReturnToProvisionAdjustment	0.048
CY2020	us-gaap	Effective Income Tax Rate Reconciliation Nondeductible Expense Other EffectiveIncomeTaxRateReconciliationNondeductibleExpenseOther	0.011
CY2019	us-gaap	Effective Income Tax Rate Reconciliation Nondeductible Expense Other EffectiveIncomeTaxRateReconciliationNondeductibleExpenseOther	-0.098
CY2020	lmb	Effective Income Tax Rate Reconciliation Expenses Income From Tax Credits EffectiveIncomeTaxRateReconciliationExpensesIncomeFromTaxCredits	-0.027
CY2019	lmb	Effective Income Tax Rate Reconciliation Expenses Income From Tax Credits EffectiveIncomeTaxRateReconciliationExpensesIncomeFromTaxCredits	0.108
CY2020	lmb	Effective Income Tax Rate Reconciliation Cares Act Net Operating Loss Carryback Percent EffectiveIncomeTaxRateReconciliationCARESActNetOperatingLossCarrybackPercent	-0.094
CY2019	lmb	Effective Income Tax Rate Reconciliation Cares Act Net Operating Loss Carryback Percent EffectiveIncomeTaxRateReconciliationCARESActNetOperatingLossCarrybackPercent	0
CY2020	us-gaap	Effective Income Tax Rate Reconciliation Other Adjustments EffectiveIncomeTaxRateReconciliationOtherAdjustments	0
CY2019	us-gaap	Effective Income Tax Rate Reconciliation Other Adjustments EffectiveIncomeTaxRateReconciliationOtherAdjustments	0.016
CY2020	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.170
CY2019	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.137
CY2019Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	1130000	USD
CY2018Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	0	USD
CY2020	us-gaap	Unrecognized Tax Benefits Increases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions	0	USD
CY2019	us-gaap	Unrecognized Tax Benefits Increases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions	722000	USD
CY2020	us-gaap	Unrecognized Tax Benefits Increases Resulting From Current Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions	0	USD
CY2019	us-gaap	Unrecognized Tax Benefits Increases Resulting From Current Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions	408000	USD
CY2020	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsDecreasesResultingFromPriorPeriodTaxPositions	1130000	USD
CY2019	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsDecreasesResultingFromPriorPeriodTaxPositions	0	USD
CY2020Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	0	USD
CY2019Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	1130000	USD
CY2020	us-gaap	Number Of Operating Segments NumberOfOperatingSegments	2	segment
CY2020	us-gaap	Number Of Operating Segments NumberOfOperatingSegments	2	segment
CY2020	us-gaap	Revenues Revenues	568209000	USD
CY2019	us-gaap	Revenues Revenues	553334000	USD
CY2020	us-gaap	Gross Profit GrossProfit	81386000	USD
CY2019	us-gaap	Gross Profit GrossProfit	71877000	USD
CY2020	us-gaap	Selling General And Administrative Expense SellingGeneralAndAdministrativeExpense	63601000	USD
CY2019	us-gaap	Selling General And Administrative Expense SellingGeneralAndAdministrativeExpense	63168000	USD
CY2020	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	630000	USD
CY2019	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	642000	USD
CY2020	us-gaap	Operating Income Loss OperatingIncomeLoss	17155000	USD
CY2019	us-gaap	Operating Income Loss OperatingIncomeLoss	8067000	USD
CY2020	us-gaap	Operating Income Loss OperatingIncomeLoss	17155000	USD
CY2019	us-gaap	Operating Income Loss OperatingIncomeLoss	8067000	USD
CY2020	us-gaap	Goodwill Impairment Loss GoodwillImpairmentLoss	0	USD
CY2019	us-gaap	Goodwill Impairment Loss GoodwillImpairmentLoss	4359000	USD
CY2020	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	-8627000	USD
CY2019	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	-6285000	USD
CY2020	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	0	USD
CY2019	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	-513000	USD
CY2020	us-gaap	Fair Value Adjustment Of Warrants FairValueAdjustmentOfWarrants	1634000	USD
CY2019	us-gaap	Fair Value Adjustment Of Warrants FairValueAdjustmentOfWarrants	-588000	USD
CY2020	us-gaap	Gain Loss On Sale Of Derivatives GainLossOnSaleOfDerivatives	0	USD
CY2019	us-gaap	Gain Loss On Sale Of Derivatives GainLossOnSaleOfDerivatives	388000	USD
CY2020	us-gaap	Gain Loss On Sale Of Property Plant Equipment GainLossOnSaleOfPropertyPlantEquipment	95000	USD
CY2019	us-gaap	Gain Loss On Sale Of Property Plant Equipment GainLossOnSaleOfPropertyPlantEquipment	57000	USD
CY2020	lmb	Nonoperating Income Expense Excluding Goodwill NonoperatingIncomeExpenseExcludingGoodwill	-10166000	USD
CY2019	lmb	Nonoperating Income Expense Excluding Goodwill NonoperatingIncomeExpenseExcludingGoodwill	-5765000	USD
CY2020	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	6989000	USD
CY2019	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	-2057000	USD
CY2020	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	6171000	USD
CY2019	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	6286000	USD
CY2020Q4	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	18751000	USD
CY2019Q4	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	21056000	USD
CY2020Q4	us-gaap	Finance Lease Right Of Use Asset FinanceLeaseRightOfUseAsset	6242000	USD
CY2019Q4	us-gaap	Finance Lease Right Of Use Asset FinanceLeaseRightOfUseAsset	6412000	USD
CY2020Q4	lmb	Lease Rightof Use Asset LeaseRightofUseAsset	24993000	USD
CY2019Q4	lmb	Lease Rightof Use Asset LeaseRightofUseAsset	27468000	USD
CY2020Q4	us-gaap	Operating Lease Liability Current OperatingLeaseLiabilityCurrent	3929000	USD
CY2019Q4	us-gaap	Operating Lease Liability Current OperatingLeaseLiabilityCurrent	3750000	USD
CY2020Q4	us-gaap	Finance Lease Liability Current FinanceLeaseLiabilityCurrent	2536000	USD
CY2019Q4	us-gaap	Finance Lease Liability Current FinanceLeaseLiabilityCurrent	2424000	USD
CY2020Q4	us-gaap	Operating Lease Liability Noncurrent OperatingLeaseLiabilityNoncurrent	15459000	USD
CY2019Q4	us-gaap	Operating Lease Liability Noncurrent OperatingLeaseLiabilityNoncurrent	18247000	USD
CY2020Q4	us-gaap	Finance Lease Liability Noncurrent FinanceLeaseLiabilityNoncurrent	3923000	USD
CY2019Q4	us-gaap	Finance Lease Liability Noncurrent FinanceLeaseLiabilityNoncurrent	4161000	USD
CY2020Q4	lmb	Lease Liability LeaseLiability	25847000	USD
CY2019Q4	lmb	Lease Liability LeaseLiability	28582000	USD
CY2020Q4	lmb	Operating Lease Rightof Use Asset Accumulated Amortization OperatingLeaseRightofUseAssetAccumulatedAmortization	11900000	USD
CY2019Q4	lmb	Operating Lease Rightof Use Asset Accumulated Amortization OperatingLeaseRightofUseAssetAccumulatedAmortization	8500000	USD
CY2020Q4	lmb	Finance Lease Rightof Use Asset Accumulated Amortization FinanceLeaseRightofUseAssetAccumulatedAmortization	5300000	USD
CY2019Q4	lmb	Finance Lease Rightof Use Asset Accumulated Amortization FinanceLeaseRightofUseAssetAccumulatedAmortization	4700000	USD
CY2020	us-gaap	Finance Lease Right Of Use Asset Amortization FinanceLeaseRightOfUseAssetAmortization	2711000	USD
CY2019	us-gaap	Finance Lease Right Of Use Asset Amortization FinanceLeaseRightOfUseAssetAmortization	2517000	USD
CY2020	us-gaap	Finance Lease Interest Expense FinanceLeaseInterestExpense	363000	USD
CY2019	us-gaap	Finance Lease Interest Expense FinanceLeaseInterestExpense	333000	USD
CY2020	us-gaap	Lease Cost LeaseCost	8084000	USD
CY2019	us-gaap	Lease Cost LeaseCost	7698000	USD
CY2020Q4	us-gaap	Finance Lease Liability Payments Due Next Twelve Months FinanceLeaseLiabilityPaymentsDueNextTwelveMonths	2826000	USD
CY2020Q4	us-gaap	Lessee Operating Lease Liability Payments Due Next Twelve Months LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths	4908000	USD
CY2020Q4	us-gaap	Finance Lease Liability Payments Due Year Two FinanceLeaseLiabilityPaymentsDueYearTwo	2316000	USD
CY2020Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Two LesseeOperatingLeaseLiabilityPaymentsDueYearTwo	4606000	USD
CY2020Q4	us-gaap	Finance Lease Liability Payments Due Year Three FinanceLeaseLiabilityPaymentsDueYearThree	1320000	USD
CY2020Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Three LesseeOperatingLeaseLiabilityPaymentsDueYearThree	3516000	USD
CY2020Q4	us-gaap	Finance Lease Liability Payments Due Year Four FinanceLeaseLiabilityPaymentsDueYearFour	509000	USD
CY2020Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Four LesseeOperatingLeaseLiabilityPaymentsDueYearFour	2917000	USD
CY2020Q4	us-gaap	Finance Lease Liability Payments Due Year Five FinanceLeaseLiabilityPaymentsDueYearFive	4000	USD
CY2020Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Five LesseeOperatingLeaseLiabilityPaymentsDueYearFive	2409000	USD
CY2020Q4	us-gaap	Finance Lease Liability Payments Due After Year Five FinanceLeaseLiabilityPaymentsDueAfterYearFive	0	USD
CY2020Q4	us-gaap	Lessee Operating Lease Liability Payments Due After Year Five LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive	4043000	USD
CY2020Q4	us-gaap	Finance Lease Liability Payments Due FinanceLeaseLiabilityPaymentsDue	6975000	USD
CY2020Q4	us-gaap	Lessee Operating Lease Liability Payments Due LesseeOperatingLeaseLiabilityPaymentsDue	22399000	USD
CY2020Q4	us-gaap	Finance Lease Liability Undiscounted Excess Amount FinanceLeaseLiabilityUndiscountedExcessAmount	516000	USD
CY2020Q4	us-gaap	Finance Lease Liability FinanceLeaseLiability	6459000	USD
CY2020Q4	us-gaap	Operating Lease Weighted Average Remaining Lease Term1 OperatingLeaseWeightedAverageRemainingLeaseTerm1	P5Y5M23D
CY2019Q4	us-gaap	Operating Lease Weighted Average Remaining Lease Term1 OperatingLeaseWeightedAverageRemainingLeaseTerm1	P6Y2M12D
CY2020Q4	us-gaap	Finance Lease Weighted Average Remaining Lease Term1 FinanceLeaseWeightedAverageRemainingLeaseTerm1	P2Y9M10D
CY2019Q4	us-gaap	Finance Lease Weighted Average Remaining Lease Term1 FinanceLeaseWeightedAverageRemainingLeaseTerm1	P2Y11M15D
CY2020Q4	us-gaap	Operating Lease Weighted Average Discount Rate Percent OperatingLeaseWeightedAverageDiscountRatePercent	0.0483
CY2019Q4	us-gaap	Operating Lease Weighted Average Discount Rate Percent OperatingLeaseWeightedAverageDiscountRatePercent	0.0480
CY2020Q4	us-gaap	Finance Lease Weighted Average Discount Rate Percent FinanceLeaseWeightedAverageDiscountRatePercent	0.0550
CY2019Q4	us-gaap	Finance Lease Weighted Average Discount Rate Percent FinanceLeaseWeightedAverageDiscountRatePercent	0.0569
CY2020	us-gaap	Operating Lease Payments OperatingLeasePayments	5164000	USD
CY2019	us-gaap	Operating Lease Payments OperatingLeasePayments	4722000	USD
CY2020	us-gaap	Finance Lease Interest Payment On Liability FinanceLeaseInterestPaymentOnLiability	363000	USD
CY2019	us-gaap	Finance Lease Interest Payment On Liability FinanceLeaseInterestPaymentOnLiability	333000	USD
CY2020	lmb	Finance Lease Principaland Disposals Payments FinanceLeasePrincipalandDisposalsPayments	2664000	USD
CY2019	lmb	Finance Lease Principaland Disposals Payments FinanceLeasePrincipalandDisposalsPayments	2469000	USD
CY2020	us-gaap	Right Of Use Asset Obtained In Exchange For Operating Lease Liability RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability	1096000	USD
CY2019	us-gaap	Right Of Use Asset Obtained In Exchange For Operating Lease Liability RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability	3355000	USD
CY2020	us-gaap	Right Of Use Asset Obtained In Exchange For Finance Lease Liability RightOfUseAssetObtainedInExchangeForFinanceLeaseLiability	2624000	USD
CY2019	us-gaap	Right Of Use Asset Obtained In Exchange For Finance Lease Liability RightOfUseAssetObtainedInExchangeForFinanceLeaseLiability	3578000	USD
CY2020	lmb	Rightof Use Asset Disposedor Adjusted Modifying Operating Lease Liability RightofUseAssetDisposedorAdjustedModifyingOperatingLeaseLiability	621000	USD
CY2019	lmb	Rightof Use Asset Disposedor Adjusted Modifying Operating Lease Liability RightofUseAssetDisposedorAdjustedModifyingOperatingLeaseLiability	1651000	USD
CY2020	lmb	Rightof Use Asset Disposedor Adjusted Modifying Finance Lease Liability RightofUseAssetDisposedorAdjustedModifyingFinanceLeaseLiability	-86000	USD
CY2019	lmb	Rightof Use Asset Disposedor Adjusted Modifying Finance Lease Liability RightofUseAssetDisposedorAdjustedModifyingFinanceLeaseLiability	-78000	USD
CY2020	lmb	Payment To Acquire Workers Compensation And General Liability Insurance PaymentToAcquireWorkersCompensationAndGeneralLiabilityInsurance	250000	USD
CY2020	us-gaap	Malpractice Insurance Annual Coverage Limit MalpracticeInsuranceAnnualCoverageLimit	4200000	USD
CY2020Q4	us-gaap	Revenue Remaining Performance Obligation Expected Timing Of Satisfaction Period1 RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionPeriod1	P24M
CY2020	lmb	Multiemployer Plans Surcharge Percentage MultiemployerPlansSurchargePercentage	0.53
CY2020	us-gaap	Schedule Of Liability For Unpaid Claims And Claims Adjustment Expense ScheduleOfLiabilityForUnpaidClaimsAndClaimsAdjustmentExpense	<div style="margin-top:10pt;text-align:justify"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">The components of the self-insurance as of December 31, 2020 and December 31, 2019 are as follows: </span></div><div style="margin-bottom:5pt;margin-top:5pt"><table style="border-collapse:collapse;display:inline-table;vertical-align:top;width:99.707%"><tr><td style="width:1.0%"/><td style="width:74.706%"/><td style="width:0.1%"/><td style="width:1.0%"/><td style="width:10.630%"/><td style="width:0.1%"/><td style="width:0.1%"/><td style="width:0.533%"/><td style="width:0.1%"/><td style="width:1.0%"/><td style="width:10.631%"/><td style="width:0.1%"/></tr><tr><td colspan="3" style="padding:2px 1pt;text-align:left;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:8pt;font-style:italic;font-weight:700;line-height:100%">(in thousands)</span></td><td colspan="3" style="padding:2px 1pt;text-align:center;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:8pt;font-weight:700;line-height:100%">December 31,<br/>2020</span></td><td colspan="3" style="padding:0 1pt"/><td colspan="3" style="padding:2px 1pt;text-align:center;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:8pt;font-weight:700;line-height:100%">December 31,<br/>2019</span></td></tr><tr><td colspan="3" style="background-color:#cceeff;padding:2px 1pt;text-align:left;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:100%">Current liability — workers' compensation and general liability</span></td><td style="background-color:#cceeff;border-top:1pt solid #000000;padding:2px 0 2px 1pt;text-align:left;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:100%">$</span></td><td style="background-color:#cceeff;border-top:1pt solid #000000;padding:2px 0;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:100%">197 </span></td><td style="background-color:#cceeff;border-top:1pt solid #000000;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"/><td colspan="3" style="background-color:#cceeff;padding:0 1pt"/><td style="background-color:#cceeff;border-top:1pt solid #000000;padding:2px 0 2px 1pt;text-align:left;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:100%">$</span></td><td style="background-color:#cceeff;border-top:1pt solid #000000;padding:2px 0;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:100%">703 </span></td><td style="background-color:#cceeff;border-top:1pt solid #000000;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"/></tr><tr><td colspan="3" style="padding:2px 1pt;text-align:left;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:100%">Current liability — medical and dental</span></td><td colspan="2" style="padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:100%">764 </span></td><td style="padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"/><td colspan="3" style="padding:0 1pt"/><td colspan="2" style="padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:100%">821 </span></td><td style="padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"/></tr><tr><td colspan="3" style="background-color:#cceeff;padding:2px 1pt;text-align:left;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:100%">Non-current liability</span></td><td colspan="2" style="background-color:#cceeff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:100%">890 </span></td><td style="background-color:#cceeff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"/><td colspan="3" style="background-color:#cceeff;padding:0 1pt"/><td colspan="2" style="background-color:#cceeff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:100%">382 </span></td><td style="background-color:#cceeff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"/></tr><tr><td colspan="3" style="padding:2px 1pt 2px 7.75pt;text-align:left;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:100%">Total liability</span></td><td style="border-top:1pt solid #000000;padding:2px 0 2px 1pt;text-align:left;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:100%">$</span></td><td style="border-top:1pt solid #000000;padding:2px 0;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:100%">1,851 </span></td><td style="border-top:1pt solid #000000;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"/><td colspan="3" style="padding:0 1pt"/><td style="border-top:1pt solid #000000;padding:2px 0 2px 1pt;text-align:left;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:100%">$</span></td><td style="border-top:1pt solid #000000;padding:2px 0;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:100%">1,906 </span></td><td style="border-top:1pt solid #000000;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"/></tr><tr><td colspan="3" style="background-color:#cceeff;padding:2px 1pt;text-align:left;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:100%">Restricted cash</span></td><td style="background-color:#cceeff;border-bottom:3pt double #000000;border-top:1pt solid #000000;padding:2px 0 2px 1pt;text-align:left;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:100%">$</span></td><td style="background-color:#cceeff;border-bottom:3pt double #000000;border-top:1pt solid #000000;padding:2px 0;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:100%">113 </span></td><td style="background-color:#cceeff;border-bottom:3pt double #000000;border-top:1pt solid #000000;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"/><td colspan="3" style="background-color:#cceeff;padding:0 1pt"/><td style="background-color:#cceeff;border-bottom:3pt double #000000;border-top:1pt solid #000000;padding:2px 0 2px 1pt;text-align:left;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:100%">$</span></td><td style="background-color:#cceeff;border-bottom:3pt double #000000;border-top:1pt solid #000000;padding:2px 0;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:100%">113 </span></td><td style="background-color:#cceeff;border-bottom:3pt double #000000;border-top:1pt solid #000000;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"/></tr></table></div>
CY2020Q4	us-gaap	Workers Compensation Liability Current WorkersCompensationLiabilityCurrent	197000	USD
CY2019Q4	us-gaap	Workers Compensation Liability Current WorkersCompensationLiabilityCurrent	703000	USD
CY2020Q4	us-gaap	Other Liabilities Current OtherLiabilitiesCurrent	764000	USD
CY2019Q4	us-gaap	Other Liabilities Current OtherLiabilitiesCurrent	821000	USD
CY2020Q4	us-gaap	Accounts Payable And Accrued Liabilities Noncurrent AccountsPayableAndAccruedLiabilitiesNoncurrent	890000	USD
CY2019Q4	us-gaap	Accounts Payable And Accrued Liabilities Noncurrent AccountsPayableAndAccruedLiabilitiesNoncurrent	382000	USD
CY2020Q4	us-gaap	Other Liabilities OtherLiabilities	1851000	USD
CY2019Q4	us-gaap	Other Liabilities OtherLiabilities	1906000	USD
CY2020Q4	us-gaap	Restricted Cash And Cash Equivalents At Carrying Value RestrictedCashAndCashEquivalentsAtCarryingValue	113000	USD
CY2019Q4	us-gaap	Restricted Cash And Cash Equivalents At Carrying Value RestrictedCashAndCashEquivalentsAtCarryingValue	113000	USD
CY2020	us-gaap	Multiemployer Plan Contributions By Employer MultiemployerPlanContributionsByEmployer	16109000	USD
CY2019	us-gaap	Multiemployer Plan Contributions By Employer MultiemployerPlanContributionsByEmployer	17052000	USD
CY2020	us-gaap	Share Based Compensation ShareBasedCompensation	1100000	USD
CY2019	us-gaap	Share Based Compensation ShareBasedCompensation	1800000	USD

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2019 Q4 Form 10-K Financial Statement

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2019 Q4 Form 10-K Financial Statement

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