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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 |  |  |

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