Contract Assets and Liabilities (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Revenue from Contract with Customer [Abstract]
Contract assets	$ 709,000	$ 590,000
Contract work in progress	223,000	270,000
Contract assets ($199,676 and $237,923 related to VIEs)	931,685	859,675
Advances that are payments on account of contract assets	208,000	308,000
Provision for Loss on Contracts	215,000	203,000
Revenue recognized	$ 848,000	$ 751,000