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, 2017	Dec. 31, 2016	Dec. 31, 2015
Gross carrying amount:
Beginning balance			$ 47,126	$ 42,392
FX adjustments and other			890	(1,444)
Ending balance			58,939	47,126	$ 42,392
Accumulated amortization:
Beginning balance			(36,128)	(35,708)
Amortization expense			(3,634)	(1,832)	(2,500)
FX adjustments and other			(699)	1,412
Ending balance			(40,461)	(36,128)	(35,708)
Net carrying amount:
Balance, December 31, 2016			10,998
Balance, December 31, 2017			18,478	10,998
Customer Relationships
Gross carrying amount:
Beginning balance			36,573	37,784
FX adjustments and other			777	(1,211)
Ending balance			46,906	36,573	37,784
Accumulated amortization:
Beginning balance			(31,481)	(31,246)
Amortization expense			(1,796)	(1,414)
FX adjustments and other			(585)	1,179
Ending balance			(33,862)	(31,481)	(31,246)
Net carrying amount:
Balance, December 31, 2016			5,092
Balance, December 31, 2017			$ 13,044	5,092
Customer Relationships | Minimum
Net carrying amount:
Estimated useful life (years)			6 years
Customer Relationships | Maximum
Net carrying amount:
Estimated useful life (years)			15 years
Trademarks
Gross carrying amount:
Beginning balance			$ 853	931
FX adjustments and other			38	(78)
Ending balance			1,026	853	931
Accumulated amortization:
Beginning balance			(853)	(881)
Amortization expense			(22)	(50)
FX adjustments and other			(38)	78
Ending balance			(913)	(853)	(881)
Net carrying amount:
Balance, December 31, 2016			0
Balance, December 31, 2017			$ 113	0
Estimated useful life (years)			5 years
Non- compete Agreements
Gross carrying amount:
Beginning balance			$ 1,322	1,477
FX adjustments and other			75	(155)
Ending balance			2,629	1,322	1,477
Accumulated amortization:
Beginning balance			(1,322)	(1,381)
Amortization expense			(204)	(96)
FX adjustments and other			(76)	155
Ending balance			(1,602)	(1,322)	(1,381)
Net carrying amount:
Balance, December 31, 2016			0
Balance, December 31, 2017			$ 1,027	0
Non- compete Agreements | Minimum
Net carrying amount:
Estimated useful life (years)			1 year
Non- compete Agreements | Maximum
Net carrying amount:
Estimated useful life (years)			5 years
Software
Gross carrying amount:
Beginning balance			$ 6,178	0
FX adjustments and other			0	0
Ending balance			6,178	6,178	0
Accumulated amortization:
Beginning balance			(272)	0
Amortization expense			(1,612)	(272)
FX adjustments and other			0	0
Ending balance			(1,884)	(272)	0
Net carrying amount:
Balance, December 31, 2016			5,906
Balance, December 31, 2017			$ 4,294	5,906
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, 2016			0
Balance, December 31, 2017			$ 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		6,178
Lavante | Customer Relationships
Gross carrying amount:
Acquisition of Assets				0
Lavante | Trademarks
Gross carrying amount:
Acquisition of Assets		163		0
Lavante | Non- compete Agreements
Gross carrying amount:
Acquisition of Assets				0
Lavante | Software
Gross carrying amount:
Acquisition of Assets		$ 5,901		6,178
Lavante | Trade Names
Gross carrying amount:
Acquisition of Assets				$ 0
C&CA
Gross carrying amount:
Acquisition of Assets	$ 10,923		$ 10,923
C&CA | Customer Relationships
Gross carrying amount:
Acquisition of Assets	9,556		9,556
C&CA | Trademarks
Gross carrying amount:
Acquisition of Assets	135		135
C&CA | Non- compete Agreements
Gross carrying amount:
Acquisition of Assets	$ 1,232		1,232
C&CA | Software
Gross carrying amount:
Acquisition of Assets			0
C&CA | Trade Names
Gross carrying amount:
Acquisition of Assets			$ 0