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Accounting Standards and Significant Accounting Policies (Details) - USD ($)
$ in Thousands
 9 Months Ended
Sep. 30, 2024
Dec. 31, 2023
New Accounting Pronouncements or Change in Accounting Principle    
Accounts receivable, net $ 626,800 $ 628,700
Accounts receivable, allowance for doubtful accounts 18,404 22,829
Unbilled Revenues    
New Accounting Pronouncements or Change in Accounting Principle    
Accounts receivable, net 114,300 119,200
Unbilled Revenues | Retention Receivable    
New Accounting Pronouncements or Change in Accounting Principle    
Accounts receivable, net $ 11,100 $ 9,800
Minimum    
New Accounting Pronouncements or Change in Accounting Principle    
Revenue recognition period (in years) 1 year  
Minimum | Tyipical    
New Accounting Pronouncements or Change in Accounting Principle    
Revenue recognition period (in years) 1 year  
Maximum    
New Accounting Pronouncements or Change in Accounting Principle    
Revenue recognition period (in years) 10 years  
Maximum | Tyipical    
New Accounting Pronouncements or Change in Accounting Principle    
Revenue recognition period (in years) 3 years