Revenue - Contract Costs (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Capitalized Contract Cost [Line Items]
Amortization of capitalized costs	$ 13,446	$ 12,847	$ 14,078
Capitalized costs, net	7,052	7,847
Tooling [Member]
Capitalized Contract Cost [Line Items]
Capitalized costs, net	3,800	4,976
Design Costs [Member]
Capitalized Contract Cost [Line Items]
Capitalized costs, net	$ 3,252	$ 2,871