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Organization, Business and Significant Accounting Policies (Details)
 12 Months Ended
Dec. 31, 2022
USD ($)
segment
$ / shares
Dec. 31, 2021
USD ($)
$ / shares
Dec. 31, 2020
USD ($)
$ / shares
Organization Consolidation and Presentation of Financial Statements [Line Items]      
Number of business segments (segment) | segment 2    
Contract retention provision 10.00%    
Foreign currency gain (loss) $ 0    
Revenue recognized, related to change orders and claims included as contract price adjustments 19,600,000 $ 2,400,000  
Increase (decrease) in operating income 114,907,000 118,560,000 $ 86,545,000
Increase (decrease) in net income $ 83,381,000 $ 85,010,000 $ 58,759,000
Increase (decrease) in diluted earnings per common share (in dollars per share) | $ / shares $ 4.91 $ 4.95 $ 3.48
Advertising cost $ 1,200,000 $ 800,000 $ 700,000
Option to extend lease term (up to) 5 years    
Option to terminate leases, period 1 year    
Government assistance, amount $ 2,300,000    
Government Assistance, Statement of Income or Comprehensive Income [Extensible Enumeration] Other Nonoperating Income (Expense)    
Revenue from Contract with Customer | Top Ten Customers | Customer Concentration Risk      
Organization Consolidation and Presentation of Financial Statements [Line Items]      
Concentration risk 35.40% 34.90% 32.70%
Labor employees covered by collective bargaining agreements | Labor Force Concentration Risk      
Organization Consolidation and Presentation of Financial Statements [Line Items]      
Concentration risk 86.00%    
Contingencies Excluding Wildfire and Health Insurance      
Organization Consolidation and Presentation of Financial Statements [Line Items]      
Insurance coverage deductible $ 1,000,000    
Wildfire      
Organization Consolidation and Presentation of Financial Statements [Line Items]      
Insurance coverage deductible 2,000,000    
Health Insurance      
Organization Consolidation and Presentation of Financial Statements [Line Items]      
Insurance coverage deductible $ 200,000    
Minimum      
Organization Consolidation and Presentation of Financial Statements [Line Items]      
Remaining lease term 1 year    
Maximum      
Organization Consolidation and Presentation of Financial Statements [Line Items]      
Remaining lease term 7 years    
Contracts Accounted for under Percentage of Completion      
Organization Consolidation and Presentation of Financial Statements [Line Items]      
Increase (decrease) in consolidated gross margin (0.40%) 0.40% (0.80%)
Increase (decrease) in operating income $ (9,800,000) $ 9,200,000 $ (18,000,000)
Increase (decrease) in net income $ (6,900,000) $ 6,600,000 $ (12,800,000)
Increase (decrease) in diluted earnings per common share (in dollars per share) | $ / shares $ (0.41) $ 0.39 $ (0.76)
Joint Venture      
Organization Consolidation and Presentation of Financial Statements [Line Items]      
Proportionate share of joint venture revenues $ 11,300,000 $ 26,100,000 $ 27,200,000