Accounts Receivable (Details) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Receivables [Abstract]
Trade accounts receivable	$ 178,087	$ 179,170
Costs in excess of billings	52,035	41,732
Total contract receivables	230,122	220,902
Less allowance for doubtful accounts	(5,572)	(3,746)	$ (3,738)	$ (3,529)
Accounts receivable	$ 224,550	$ 217,156