Goodwill and Other Intangible Assets - Summary of Finite-Lived and Indefinite-Lived Intangible Assets (Detail) - USD ($) $ in Thousands	6 Months Ended	12 Months Ended
	Jun. 30, 2019	Dec. 31, 2018
Finite-Lived Intangible Assets [Line Items]
Finite-lived Intangible Assets, Gross Carrying Amount	$ 191,000	$ 191,000
Accumulated Amortization	(54,100)	(41,411)
Finite-lived Intangible Assets, Currency Translation	3,533	4,454
Finite lived Intangible Assets, Net	140,433	154,043
Indefinite lived Intangible Assets, Gross Carrying Amount	14,000	14,000
Indefinite lived Intangible Assets, Currency Translation	233	326
Indefinite lived Intangible Assets, Net	14,233	14,326
Gross Carrying Amount	205,000	205,000
Currency Translation	3,766	4,780
Net	154,666	168,369
Beginning Balance	291,434	304,805
Currency Translation	(1,603)	(13,371)
Ending Balance	289,831	291,434
Trade Names [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-lived Intangible Assets, Gross Carrying Amount	9,000	9,000
Accumulated Amortization	(3,891)	(2,979)
Finite-lived Intangible Assets, Currency Translation	200	237
Finite lived Intangible Assets, Net	$ 5,309	$ 6,258
Trade Names [Member] | Minimum [Member]
Finite-Lived Intangible Assets [Line Items]
Remaining Weighted Average Amortization Period	3 years	4 years
Trade Names [Member] | Maximum [Member]
Finite-Lived Intangible Assets [Line Items]
Remaining Weighted Average Amortization Period	4 years	5 years
Technology [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-lived Intangible Assets, Gross Carrying Amount	$ 15,000	$ 15,000
Accumulated Amortization	(6,486)	(4,964)
Finite-lived Intangible Assets, Currency Translation	335	394
Finite lived Intangible Assets, Net	$ 8,849	$ 10,430
Technology [Member] | Minimum [Member]
Finite-Lived Intangible Assets [Line Items]
Remaining Weighted Average Amortization Period	2 years	3 years
Technology [Member] | Maximum [Member]
Finite-Lived Intangible Assets [Line Items]
Remaining Weighted Average Amortization Period	4 years	5 years
Customer Relationships [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-lived Intangible Assets, Gross Carrying Amount	$ 167,000	$ 167,000
Accumulated Amortization	(43,723)	(33,468)
Finite-lived Intangible Assets, Currency Translation	2,998	3,823
Finite lived Intangible Assets, Net	$ 126,275	$ 137,355
Customer Relationships [Member] | Minimum [Member]
Finite-Lived Intangible Assets [Line Items]
Remaining Weighted Average Amortization Period	4 years	5 years
Customer Relationships [Member] | Maximum [Member]
Finite-Lived Intangible Assets [Line Items]
Remaining Weighted Average Amortization Period	9 years	10 years