Commitments and Contingencies - Narrative (Details) - USD ($) $ in Thousands		3 Months Ended
	Jan. 23, 2020	Mar. 31, 2023
Loss Contingencies [Line Items]
Payment to acquire workers' compensation and general liability insurance		$ 250
Malpractice insurance, annual coverage limit		4,400
Surety Bond
Loss Contingencies [Line Items]
Debt outstanding		$ 109,400
Bernards Bros vs. Limbach Holdings, Inc. | Pending Litigation
Loss Contingencies [Line Items]
Loss contingency, damages sought, value	$ 3,000