Accounts Receivable (Details) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Receivables [Abstract]
Trade accounts receivable	$ 179,170	$ 185,745
Costs in excess of billings	41,732	54,437
Total contract receivables	220,902	240,182
Less allowance for doubtful accounts	(3,746)	(3,738)	$ (3,529)	$ (5,951)
Accounts receivable	$ 217,156	$ 236,444