Goodwill and Intangible Assets - Schedule of Changes in Noncurrent Intangible Assets (Details) - USD ($) $ in Thousands			12 Months Ended
	Feb. 23, 2017	Oct. 31, 2016	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Gross carrying amount:
Beginning balance			$ 58,939	$ 47,126
FX adjustments and other			(624)	890
Ending balance			58,315	58,939	$ 47,126
Accumulated amortization:
Beginning balance			(40,461)	(36,128)
Amortization expense			(3,395)	(3,634)	(1,800)
FX adjustments and other			486	699
Ending balance			(43,370)	(40,461)	(36,128)
Net carrying amount:
Balance, December 31, 2017			18,478
Balance, December 31, 2018			14,945	18,478
Customer Relationships
Gross carrying amount:
Beginning balance			46,906	36,573
FX adjustments and other			(547)	777
Ending balance			46,359	46,906	36,573
Accumulated amortization:
Beginning balance			(33,862)	(31,481)
Amortization expense			(1,607)	(1,796)
FX adjustments and other			409	585
Ending balance			(35,060)	(33,862)	(31,481)
Net carrying amount:
Balance, December 31, 2017			13,044
Balance, December 31, 2018			$ 11,299	13,044
Customer Relationships | Minimum
Net carrying amount:
Estimated useful life (years)			10 years
Customer Relationships | Maximum
Net carrying amount:
Estimated useful life (years)			15 years
Trademarks
Gross carrying amount:
Beginning balance			$ 1,026	853
FX adjustments and other			138	38
Ending balance			1,164	1,026	853
Accumulated amortization:
Beginning balance			(913)	(853)
Amortization expense			(67)	(22)
FX adjustments and other			22	38
Ending balance			(1,002)	(913)	(853)
Net carrying amount:
Balance, December 31, 2017			113
Balance, December 31, 2018			$ 162	113
Trademarks | Minimum
Net carrying amount:
Estimated useful life (years)			4 years
Trademarks | Maximum
Net carrying amount:
Estimated useful life (years)			5 years
Non- compete Agreements
Gross carrying amount:
Beginning balance			$ 2,629	1,322
FX adjustments and other			(51)	75
Ending balance			2,578	2,629	1,322
Accumulated amortization:
Beginning balance			(1,602)	(1,322)
Amortization expense			(246)	(204)
FX adjustments and other			51	76
Ending balance			(1,797)	(1,602)	(1,322)
Net carrying amount:
Balance, December 31, 2017			1,027
Balance, December 31, 2018			$ 781	1,027
Estimated useful life (years)			5 years
Software
Gross carrying amount:
Beginning balance			$ 6,178	6,178
FX adjustments and other			(164)	0
Ending balance			6,014	6,178	6,178
Accumulated amortization:
Beginning balance			(1,884)	(272)
Amortization expense			(1,475)	(1,612)
FX adjustments and other			48	0
Ending balance			(3,311)	(1,884)	(272)
Net carrying amount:
Balance, December 31, 2017			4,294
Balance, December 31, 2018			$ 2,703	4,294
Estimated useful life (years)			4 years
Trade Names
Gross carrying amount:
Beginning balance			$ 2,200	2,200
FX adjustments and other			0	0
Ending balance			2,200	2,200	2,200
Accumulated amortization:
Beginning balance			(2,200)	(2,200)
Amortization expense			0	0
FX adjustments and other			0	0
Ending balance			(2,200)	(2,200)	$ (2,200)
Net carrying amount:
Balance, December 31, 2017			0
Balance, December 31, 2018			$ 0	0
Trade Names | Minimum
Net carrying amount:
Estimated useful life (years)			4 years
Trade Names | Maximum
Net carrying amount:
Estimated useful life (years)			5 years
Lavante
Gross carrying amount:
Acquisition of Assets		$ 6,178		10,923
Lavante | Customer Relationships
Gross carrying amount:
Acquisition of Assets				9,556
Lavante | Trademarks
Gross carrying amount:
Acquisition of Assets		163		135
Lavante | Non- compete Agreements
Gross carrying amount:
Acquisition of Assets				1,232
Lavante | Software
Gross carrying amount:
Acquisition of Assets		$ 5,901		0
Lavante | Trade Names
Gross carrying amount:
Acquisition of Assets				$ 0
C&CA
Gross carrying amount:
Acquisition of Assets	$ 10,923
C&CA | Customer Relationships
Gross carrying amount:
Acquisition of Assets	9,556
C&CA | Trademarks
Gross carrying amount:
Acquisition of Assets	135
C&CA | Non- compete Agreements
Gross carrying amount:
Acquisition of Assets	$ 1,232