Intangible Assets - Schedule of Intangible Assets (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2019	Dec. 31, 2018
Schedule of Finite and Indefinite-Lived Intangible Assets [Line Items]
Accumulated Amortization	$ (5,879)	$ (4,991)
Finite-Lived, Foreign Currency Translation	119	(343)
Indefinite-lived, Gross Book Value	172	172
Indefinite-lived Intangible Assets, Foreign Currency Translation	4
Indefinite-lived Intangible, Net Book Value	176	172
Indefinite and Finite-Lived, Gross Book Value	40,234	40,308
Indefinite and Finite-Lived, Net Book Value	$ 34,474	$ 34,974
Trademarks
Schedule of Finite and Indefinite-Lived Intangible Assets [Line Items]
Estimated Useful Lives	15 years	15 years
Finite-Lived, Gross Book Value	$ 8,159	$ 8,236
Accumulated Amortization	0	0
Finite-Lived, Foreign Currency Translation	23	(72)
Finite-Lived, Net Book Value	8,182	8,164
Patents
Schedule of Finite and Indefinite-Lived Intangible Assets [Line Items]
Finite-Lived, Gross Book Value	5,945	6,026
Accumulated Amortization	(1,751)	(1,925)
Finite-Lived, Foreign Currency Translation	4	(11)
Finite-Lived, Net Book Value	$ 4,198	$ 4,090
Patents | Minimum
Schedule of Finite and Indefinite-Lived Intangible Assets [Line Items]
Estimated Useful Lives	15 years	15 years
Patents | Maximum
Schedule of Finite and Indefinite-Lived Intangible Assets [Line Items]
Estimated Useful Lives	30 years	30 years
Customer relationships
Schedule of Finite and Indefinite-Lived Intangible Assets [Line Items]
Finite-Lived, Gross Book Value	$ 25,787	$ 25,703
Accumulated Amortization	(4,001)	(2,953)
Finite-Lived, Foreign Currency Translation	88	(260)
Finite-Lived, Net Book Value	$ 21,874	$ 22,490
Customer relationships | Minimum
Schedule of Finite and Indefinite-Lived Intangible Assets [Line Items]
Estimated Useful Lives	5 years	5 years
Customer relationships | Maximum
Schedule of Finite and Indefinite-Lived Intangible Assets [Line Items]
Estimated Useful Lives	15 years	15 years
Non-compete agreements
Schedule of Finite and Indefinite-Lived Intangible Assets [Line Items]
Estimated Useful Lives	3 years	3 years
Finite-Lived, Gross Book Value	$ 171	$ 171
Accumulated Amortization	(127)	(113)
Finite-Lived, Foreign Currency Translation	0	0
Finite-Lived, Net Book Value	$ 44	$ 58