Goodwill, In-Process Research and Development and Intellectual Property - Summary of Gross Intellectual Property, Accumulated Amortization, and Net Intellectual Property (Detail) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2017	Dec. 31, 2016
Finite-Lived Intangible Assets [Line Items]
Net Carrying Amount	$ 36,015	$ 37,090
Developed Technology [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	48,500	48,500
Accumulated Amortization	(10,092)	(8,458)
Foreign currency translation impact	(2,393)	(2,952)
Net Carrying Amount	$ 36,015	$ 37,090