Organization, Business and Basis of Presentation (Details) $ / shares in Units, $ in Thousands	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 30, 2023 USD ($) $ / shares	Jun. 30, 2022 USD ($) $ / shares	Jun. 30, 2023 USD ($) segment $ / shares	Jun. 30, 2022 USD ($) $ / shares	Dec. 31, 2022 USD ($)
Organization Consolidation and Presentation of Financial Statements [Line Items]
Number of business segments (segment) | segment			2
Foreign currency gains (losses)			$ 0	$ 0
Revenue recognized, related to change orders and claims included as contract price adjustments			38,100		$ 19,600
Increase (decrease) in operating income	$ 32,438	$ 26,245	59,864	51,147
Increase (decrease) in net income	$ 22,273	$ 19,684	$ 45,436	$ 40,372
Increase (decrease) in diluted earnings per common share (in dollars per share) | $ / shares	$ 1.33	$ 1.15	$ 2.70	$ 2.36
Contracts Accounted for under Percentage of Completion
Organization Consolidation and Presentation of Financial Statements [Line Items]
Increase (decrease) in consolidated gross margin	(1.30%)	(0.10%)	(1.00%)	0.30%
Increase (decrease) in operating income	$ (11,500)	$ (500)	$ (17,800)	$ 3,700
Increase (decrease) in net income	$ (8,000)	$ (300)	$ (12,400)	$ 2,500
Increase (decrease) in diluted earnings per common share (in dollars per share) | $ / shares	$ (0.48)	$ (0.02)	$ (0.74)	$ 0.15