Contracts in Progress (Details) - USD ($) $ in Thousands	Mar. 31, 2026	Dec. 31, 2025
Contracts in Progress
Costs incurred on uncompleted contracts	$ 1,827,047	$ 1,980,625
Estimated earnings	260,124	292,235
Costs incurred and estimated earnings on uncompleted contracts	2,087,171	2,272,860
Less: Billings to date	(2,096,917)	(2,290,881)
Net contracts in progress	(9,746)	(18,021)
Contract assets	42,633	31,083
Contract liabilities	$ (52,379)	$ (49,104)