Goodwill and Intangible Assets - Intangible Assets Subject to Amortization (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Finite-Lived Intangible Assets [Line Items]
Historical Cost	$ 135,112	$ 127,849
Accumulated Amortization	122,634	110,237
Net	$ 12,478	$ 17,612
Minimum
Finite-Lived Intangible Assets [Line Items]
Weighted-Average   Amortization Period	1 year
Maximum
Finite-Lived Intangible Assets [Line Items]
Weighted-Average   Amortization Period	20 years
Trade names
Finite-Lived Intangible Assets [Line Items]
Weighted-Average   Amortization Period	1 year 7 months 6 days	2 years 7 months 6 days
Historical Cost	$ 12,219	$ 13,435
Accumulated Amortization	10,633	11,548
Net	$ 1,586	$ 1,887
Patent and patent licenses
Finite-Lived Intangible Assets [Line Items]
Weighted-Average   Amortization Period	0 years	1 year
Historical Cost	$ 10,162	$ 1,686
Accumulated Amortization	9,751	1,568
Net	$ 411	$ 118
Customer relationships
Finite-Lived Intangible Assets [Line Items]
Weighted-Average   Amortization Period	4 years 3 months 18 days	5 years 3 months 18 days
Historical Cost	$ 99,571	$ 101,780
Accumulated Amortization	90,050	88,102
Net	$ 9,521	$ 13,678
Customer relationships | Minimum
Finite-Lived Intangible Assets [Line Items]
Weighted-Average   Amortization Period	4 years	4 years
Customer relationships | Maximum
Finite-Lived Intangible Assets [Line Items]
Weighted-Average   Amortization Period	5 years	5 years
Other purchased intangibles
Finite-Lived Intangible Assets [Line Items]
Weighted-Average   Amortization Period	3 years 9 months 18 days	4 years 9 months 18 days
Historical Cost	$ 13,160	$ 10,948
Accumulated Amortization	12,200	9,019
Net	$ 960	$ 1,929