Intangibles, Net - Schedule of Intangibles, Net (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Finite-Lived Intangible Assets [Line Items]
Cost	$ 112,559	$ 119,022
Accumulated Amortization	(105,223)	(109,889)
Net	7,336	9,133
Trademarks
Finite-Lived Intangible Assets [Line Items]
Cost	13,540	13,540
Accumulated Amortization	(10,407)	(9,856)
Net	3,133	3,684
Customer relationships
Finite-Lived Intangible Assets [Line Items]
Cost	99,019	98,912
Accumulated Amortization	(94,816)	(93,463)
Net	$ 4,203	5,449
Patents
Finite-Lived Intangible Assets [Line Items]
Cost		6,570
Accumulated Amortization		(6,570)
Net		$ 0