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Contract Assets and Liabilities - Summary of Contract Assets (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Contractors [Line Items]      
Unbilled revenue, net $ 134,187 $ 97,543  
Contract retainages, net 90,888 88,260  
Contract assets, net 225,075 185,803  
Changes in contract assets, net 39,266 $ (31,360) $ 16,443
Net Period Change      
Contractors [Line Items]      
Changes in unbilled revenue, net 36,644    
Changes in contract retainages, net 2,628    
Changes in contract assets, net $ 39,272