Geographic Information - Net Sales to External Customers Based Upon Geographic Location (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2021	Sep. 30, 2021	Jun. 30, 2021	Mar. 31, 2021	Dec. 31, 2020	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Geographic Reporting Disclosure [Line Items]
Sales	$ 100,204	$ 79,169	$ 82,110	$ 76,331	$ 92,953	$ 70,736	$ 60,564	$ 79,515	$ 337,814	$ 303,768	$ 381,765
United States and Canada
Geographic Reporting Disclosure [Line Items]
Sales									127,661	119,769	151,646
Americas-Other
Geographic Reporting Disclosure [Line Items]
Sales									12,973	9,057	14,110
Germany
Geographic Reporting Disclosure [Line Items]
Sales									48,772	46,166	52,083
Europe-Other
Geographic Reporting Disclosure [Line Items]
Sales									55,577	45,224	70,196
Japan
Geographic Reporting Disclosure [Line Items]
Sales									25,997	4,998	33,361
China
Geographic Reporting Disclosure [Line Items]
Sales									40,808	31,748	32,934
Asia-Other
Geographic Reporting Disclosure [Line Items]
Sales									$ 26,026	$ 46,806	$ 27,435