Contract Assets and Liabilities - Summary of contract assets and liabilities (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Dec. 31, 2021
Contractors [Line Items]
Contract assets, net	$ 280,718		$ 225,075
Contract liabilities	(203,163)		(167,931)
Net contract assets (liabilities)	77,555		$ 57,144
Contract assets, net, Change	43,413	$ 10,855
Change
Contractors [Line Items]
Contract assets, net, Change	55,643
Contract liabilities, Change	(35,232)
Net contract assets (liabilities), Change	$ 20,411