Acquisitions - Summary of Estimated Fair Values of Assets Acquired and Liabilities Assumed on Preliminary Purchase Price Allocation (Details) - USD ($) $ in Thousands	Mar. 31, 2023	Dec. 31, 2022	May 31, 2022
Business Acquisition [Line Items]
Contract assets	$ 683,631	$ 634,033
Goodwill	1,661,913	1,661,850
Investments in and advances to unconsolidated joint ventures	107,416	107,425
Contract liabilities	$ (229,225)	$ (213,064)
Xator Corporation
Business Acquisition [Line Items]
Cash and cash equivalents			$ 8,935
Accounts receivable			7,393
Contract assets			25,397
Prepaid expenses and other current assets			3,615
Property and equipment			1,699
Right of use assets, operating leases			7,517
Goodwill			253,190
Investments in and advances to unconsolidated joint ventures			698
Intangible assets			123,500
Other noncurrent assets			9,156
Accounts payable			(6,626)
Accrued expenses and other current liabilities			(31,119)
Contract liabilities			(2,080)
Short-term lease liabilities, operating leases			(2,371)
Long-term lease liabilities, operating leases			(5,146)
Other long-term liabilities			(9,156)
Net assets acquired			$ 384,602