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Basis of Presentation and Significant Accounting Policies (Details) - USD ($)
 3 Months Ended 6 Months Ended
Jun. 30, 2023
Jun. 30, 2022
Jun. 30, 2023
Jun. 30, 2022
Dec. 31, 2022
Financing Receivable, Impaired [Line Items]          
Allowance for doubtful accounts against contracts receivable $ 0   $ 0   $ 0
Contract receivables, retainage 70,853,000   70,853,000   65,682,000
Contract liabilities, retainage $ 78,929,000   $ 78,929,000   63,848,000
Percentage of receivables estimated to be collected in next fiscal year 70.00%   70.00%    
Increase in contract asset retainage     $ 5,208,000    
Increase in contract liability retainage     96,580,000    
Contract liability recognized during period $ 49,596,000   $ 147,426,000    
Contract liability revenue recognized   $ 16,439,000   $ 83,597,000  
Ownership interest in subsidiaries 50.00%   50.00%    
Total disability insurance policies, per policy amount $ 20,000,000   $ 20,000,000    
Restricted cash 0   0   $ 3,721,000
Variable Interest Entity, Primary Beneficiary | Myers          
Financing Receivable, Impaired [Line Items]          
Members’ interest subject to mandatory redemption $ 20,000,000   $ 20,000,000