Components of Company Net Deferred Tax Assets (Detail) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Income Tax Disclosure [Abstract]
Net operating loss carryforwards	$ 49,787	$ 44,942
Tax credit carryforwards	352,535	143,987
Accrued expenses, reserves, and prepaids	77,904	79,029
Intangible assets	26,751	16,177
Stock-based compensation	47,713	49,322
Inventory	15,581	18,942
Impairment	5,017	5,005
Other	1,415	1,155
Valuation allowance	(73,037)	(67,708)
Total deferred tax assets	503,666	290,851
Joint venture basis difference	(1,714)	(1,888)
Acquired intangibles	(8,773)	(162,689)
Convertible notes discount	(24,394)	(32,162)
Property, plant and equipment	(22,103)	(13,192)
Unrealized (gains) losses	104	(4,256)
Total deferred tax liabilities	(56,880)	(214,187)
Net deferred tax assets	$ 446,786	$ 76,664