Goodwill and Intangible Assets - Summary of Intangible Assets (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 23,081	$ 22,559
Accumulated Amortization	(8,630)	(7,310)
Currency Translation Adjustment	97	262
Net Carrying Amount	$ 14,548	$ 15,511
Trademarks/Tradenames
Finite-Lived Intangible Assets [Line Items]
Weighted- Average Amortization Period	23 years	23 years
Gross Carrying Amount	$ 8,472	$ 8,378
Accumulated Amortization	(3,639)	(3,283)
Currency Translation Adjustment	54	90
Net Carrying Amount	$ 4,887	$ 5,185
Customer relationships
Finite-Lived Intangible Assets [Line Items]
Weighted- Average Amortization Period	15 years	15 years
Gross Carrying Amount	$ 14,609	$ 14,181
Accumulated Amortization	(4,991)	(4,027)
Currency Translation Adjustment	43	172
Net Carrying Amount	$ 9,661	$ 10,326