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Basis of Presentation and Significant Accounting Policies (Details) - USD ($)
 3 Months Ended
Mar. 31, 2023
Mar. 31, 2022
Dec. 31, 2022
Financing Receivable, Impaired [Line Items]      
Allowance for doubtful accounts against contracts receivable $ 0   $ 0
Contract receivables 68,787,000   65,682,000
Contract liabilities, retainage $ 61,371,000   63,848,000
Percentage of receivables estimated to be collected in next fiscal year 70.00%    
Increase in contract asset retainage $ 15,691,000    
Increase in contract liability retainage 3,029,000    
Contract liability recognized during period $ 97,830,000    
Contract liability revenue recognized   $ 67,158,000  
Ownership interest in subsidiaries 50.00%    
Total disability insurance policies, per policy amount $ 20,000,000    
Restricted Cash 3,121,000   $ 3,721,000
Variable Interest Entity, Primary Beneficiary | Myers      
Financing Receivable, Impaired [Line Items]      
Members’ interest subject to mandatory redemption $ 20,000,000