Quarterly report pursuant to Section 13 or 15(d)

Commitments and Contingencies (Details)

v3.20.2
Commitments and Contingencies (Details) - USD ($)
$ in Thousands
Apr. 17, 2020
Jan. 23, 2020
Nov. 13, 2019
Oct. 12, 2018
Jun. 30, 2020
Dec. 31, 2019
Dec. 31, 2018
Loss Contingencies [Line Items]              
Litigation settlement, amount awarded to other party       $ 30,000      
Other current assets liabilities             $ 30,000
Long-term debt         $ 41,000 $ 41,000  
Surety Bond              
Loss Contingencies [Line Items]              
Long-term debt         $ 128,600    
Bernards Bros vs. Limbach Holdings | Pending Litigation              
Loss Contingencies [Line Items]              
Loss contingency, damages sought, value   $ 3,000          
Lanzo Trenchless Technologies vs. Limbach Company LLC | Pending Litigation              
Loss Contingencies [Line Items]              
Loss contingency, damages sought, value     $ 400        
LA Excavating, Inc. vs. Limbach Company LP [Member] | Pending Litigation              
Loss Contingencies [Line Items]              
Loss contingency, damages sought, value $ 1,000