This element represent that amount of workers' compensation and general liability insurance purchased by company.

No definition available.

Name:	lmb_PaymentToAcquireWorkersCompensationAndGeneralLiabilityInsurance
Namespace Prefix:	lmb_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

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Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

The value (monetary amount) of the award the plaintiff seeks in the legal matter.

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Balance Type:	debit
Period Type:	duration

- Definition

Annual coverage limit provided by the insurance arrangement for malpractice claims.

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
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Period Type:

- Details

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Commitments and Contingencies - Narrative (Details) - USD ($)				3 Months Ended
	Jan. 26, 2022	Apr. 17, 2020	Jan. 23, 2020	Mar. 31, 2022
Loss Contingencies [Line Items]
Payment to acquire workers' compensation and general liability insurance				$ 250,000
Malpractice insurance, annual coverage limit				4,400,000
Surety Bond
Loss Contingencies [Line Items]
Debt outstanding				$ 134,900,000
Bernards Bros vs. Limbach Holdings, Inc. \| Pending Litigation
Loss Contingencies [Line Items]
Loss contingency, damages sought, value			$ 3,000,000
LA Excavating, Inc. vs. Limbach Company LP \| Pending Litigation
Loss Contingencies [Line Items]
Loss contingency, damages sought, value		$ 1,000,000
Suffolk Construction Company, Inc. \| Pending Litigation
Loss Contingencies [Line Items]
Loss contingency, damages sought, value	$ 300,000