Contract balances (Details 2) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021	Dec. 31, 2021
Revenue from Contract with Customer [Abstract]
Contract assets	$ 265,585		$ 265,585		$ 125,742
Change in contract assets			139,843
Contract liabilities - current	(216,439)		(216,439)		(179,140)
Change in contract liabilities - current			(37,299)
Contract liabilities - noncurrent	(12)		(12)		(118)
Change in contract liabilities - noncurrent			106
Net contract assets (liabilities)	49,134		49,134		$ (53,516)
Change in net contract assets (liabilities)			102,650
Amounts included in contract liability at the beginning of the period	11,200	$ 7,100	147,900	$ 152,400
Contract with Customer, Performance Obligation Satisfied in Previous Period	$ 14,500	$ 19,200	$ 54,100	$ 63,300