Intangibles - Finite and Indefinite Lived Intangibles (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Finite-Lived and Indefinite-Lived Intangible Assets [Line Items]
Historical Cost	$ 93,831	$ 97,155
Accumulated Amortization	67,475	69,392
Customer lists
Finite-Lived and Indefinite-Lived Intangible Assets [Line Items]
Historical Cost	52,447	54,502
Accumulated Amortization	52,447	54,502
License agreements
Finite-Lived and Indefinite-Lived Intangible Assets [Line Items]
Historical Cost	2,905	2,899
Accumulated Amortization	1,196	979
Developed technology
Finite-Lived and Indefinite-Lived Intangible Assets [Line Items]
Historical Cost	7,652	7,924
Accumulated Amortization	7,149	7,204
Patents
Finite-Lived and Indefinite-Lived Intangible Assets [Line Items]
Historical Cost	5,543	5,556
Accumulated Amortization	5,543	5,556
Other
Finite-Lived and Indefinite-Lived Intangible Assets [Line Items]
Historical Cost	1,147	1,162
Accumulated Amortization	1,140	1,151
Trademarks
Finite-Lived and Indefinite-Lived Intangible Assets [Line Items]
Historical Cost	$ 24,137	$ 25,112