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Basis of Presentation and Significant Accounting Policies (Details) - USD ($)
 3 Months Ended 6 Months Ended
Jun. 30, 2024
Jun. 30, 2023
Jun. 30, 2024
Jun. 30, 2023
Dec. 31, 2023
Accounting Policies [Abstract]          
Allowance for doubtful accounts against contracts receivable $ 0   $ 0   $ 0
Contract receivables, retainage 49,727,000   49,727,000   56,855,000
Contract liabilities, retainage $ 91,852,000   $ 91,852,000   86,895,000
Percentage of receivables estimated to be collected in next fiscal year 70.00%   70.00%    
Decrease in contract asset retainage     $ 11,566,000    
Increase in contract liability retainage     111,974,000    
Contract liability recognized during period $ 86,113,000   $ 235,064,000    
Contract liability revenue recognized   $ 49,596,000   $ 147,426,000  
Ownership interest in subsidiaries 50.00%   50.00%    
Restricted cash $ 0   $ 0   $ 0