Deferred Tax Assets (Liabilities) (Details) - USD ($) $ in Thousands	Dec. 31, 2024	Dec. 31, 2023
Income Tax Disclosure [Abstract]
Long-term contracts	$ 50,878	$ 51,226
Federal, state and foreign net operating losses, other carryforwards and tax credits	306,701	351,094
Other	27,107	26,676
Deferred Tax Assets, Gross	384,686	428,996
Deferred Tax Assets, Valuation Allowance	(32,882)	(33,420)
Deferred Tax Assets, Net of Valuation Allowance	351,804	395,576
Deferred Tax Liabilities Fixed Assets And Intangibles	(385,972)	(425,980)
Investment in joint venture	(64,071)	(63,108)
Deferred Tax Liabilities, Other	(14,063)	(19,336)
Deferred Tax Liabilities, Gross	(464,106)	(508,424)
Deferred Tax Liabilities, Net	$ (112,302)	$ (112,848)