Contracts in Progress (Details) - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
Contractors [Abstract]
Costs incurred on uncompleted contracts	$ 1,150,314	$ 1,138,298
Estimated earnings	164,867	168,861
Costs incurred and estimated earnings on uncompleted contracts	1,315,181	1,307,159
Less: Billings to date	(1,323,300)	(1,305,628)
Billings in excess of costs and estimated earnings on uncompleted contracts, net	(8,119)
Costs and estimated earnings in excess of billings on uncompleted contracts, net		1,531
Contract assets	24,474	28,529
Contract liabilities	$ (32,593)	$ (26,998)