Goodwill and Intangible Assets - Summary of Acquired Intangible Assets (Detail) - USD ($) $ in Thousands	Mar. 31, 2017	Dec. 31, 2016
Acquired Intangible Assets [Line Items]
Gross amounts of finite-lived intangible assets	$ 318,080
Finite-lived intangible assets, Accumulated Amortization	(16,304)
Finite-lived intangible assets, Net Carrying Amount	301,776
Indefinite-lived intangible assets, Net Carrying Amount	86,832
Gross amounts of intangible assets	404,912
Intangible Assets, Net Carrying Amount	388,608	$ 376,145
IPR&D [Member]
Acquired Intangible Assets [Line Items]
Indefinite-lived intangible assets, Net Carrying Amount	86,832
Developed technology [Member]
Acquired Intangible Assets [Line Items]
Gross amounts of finite-lived intangible assets	125,889
Finite-lived intangible assets, Accumulated Amortization	(5,894)
Finite-lived intangible assets, Net Carrying Amount	119,995
Trade name [Member]
Acquired Intangible Assets [Line Items]
Gross amounts of finite-lived intangible assets	45,275
Finite-lived intangible assets, Accumulated Amortization	(3,180)
Finite-lived intangible assets, Net Carrying Amount	42,095
Favorable Contracts and Leases Net [Member]
Acquired Intangible Assets [Line Items]
Gross amounts of finite-lived intangible assets	112,817
Finite-lived intangible assets, Accumulated Amortization	(2,808)
Finite-lived intangible assets, Net Carrying Amount	110,009
Other [Member]
Acquired Intangible Assets [Line Items]
Gross amounts of finite-lived intangible assets	34,099
Finite-lived intangible assets, Accumulated Amortization	(4,422)
Finite-lived intangible assets, Net Carrying Amount	$ 29,677