Goodwill, In-Process Research and Development and Intellectual Property - Summary of Gross Intellectual Property, Accumulated Amortization, and Net Intellectual Property (Detail) - USD ($) $ in Thousands	6 Months Ended	12 Months Ended
	Jun. 30, 2017	Dec. 31, 2016
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 48,900	$ 48,500
Accumulated Amortization	(11,781)	(8,458)
Foreign currency translation impact	51	(2,952)
Net Carrying Amount	37,170	37,090
Developed Technology [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	48,500	48,500
Accumulated Amortization	(11,774)	(8,458)
Foreign currency translation impact	51	(2,952)
Net Carrying Amount	36,777	$ 37,090
Technology and Patents Purchased [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	400
Accumulated Amortization	(7)
Net Carrying Amount	$ 393