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Acquisitions - Summary of Estimated Fair Values of Assets Acquired and Liabilities Assumed on Purchase Price Allocation (Details) - USD ($)
$ in Thousands
Jun. 30, 2023
Apr. 13, 2023
Dec. 31, 2022
May 31, 2022
Business Acquisition [Line Items]        
Contract assets $ 712,413   $ 634,033  
Goodwill 1,692,725   1,661,850  
Investments in and advances to unconsolidated joint ventures 118,861   107,425  
Contract liabilities $ (292,404)   $ (213,064)  
IPKeys Power Partners        
Business Acquisition [Line Items]        
Cash and cash equivalents   $ 126    
Accounts receivable   3,937    
Contract assets   823    
Other current assets   464    
Property and equipment   142    
Right of use assets, operating leases   129    
Goodwill   25,008    
Intangible assets   22,300    
Accounts payable   (543)    
Accrued expenses and other current liabilities   (1,821)    
Contract liabilities   (1,936)    
Deferred tax liabilities   (5,257)    
Net assets acquired   $ 43,372    
Xator Corporation        
Business Acquisition [Line Items]        
Cash and cash equivalents       $ 8,935
Accounts receivable       7,393
Contract assets       24,332
Prepaid expenses and other current assets       3,615
Property and equipment       1,699
Right of use assets, operating leases       7,517
Goodwill       257,934
Investments in and advances to unconsolidated joint ventures       698
Intangible assets       123,500
Other noncurrent assets       9,156
Accounts payable       (6,626)
Accrued expenses and other current liabilities       (31,309)
Contract liabilities       (2,631)
Short-term lease liabilities, operating leases       (2,371)
Long-term lease liabilities, operating leases       (5,146)
Other long-term liabilities       (9,156)
Net assets acquired       $ 387,540