Income Taxes - Additional Information (Detail) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Income Tax [Line Items]
Valuation allowance for deferred tax asset	$ 28,845,000	$ 2,624,000
Benefit from renewal of U.S. federal research and development tax credit	3,200,000
Provision for reassessment of tax exposure related to filing of prior year tax returns	(72,000)
Tax expense required to correctly state the prior year tax provision	1,800,000
Amount offset in prior year tax provision	1,900,000
U.S. Statutory income tax rate	35.00%	35.00%	35.00%
Recognition of a tax benefit related to increase of intangible assets	(64,031,000)	48,246,000	(2,955,000)
Unremitted foreign earnings reinvested	70,500,000
Amount of tax remitted on foreign earnings	9,100,000
Unrecognized tax benefits that would affect the effective tax rate if recognized	33,000,000	29,800,000	35,600,000
Amounts netted against related deferred tax assets	1,100,000	2,400,000	2,500,000
Accrued interest and penalties related to unrecognized tax benefits	1,000,000	1,200,000	1,700,000
Unrecognized tax benefits decrease in next 12 months	3,300,000
California [Member]
Income Tax [Line Items]
Valuation allowance for deferred tax asset	26,200,000
Minimum [Member]
Income Tax [Line Items]
Losses and credit expire	2021
Maximum [Member]
Income Tax [Line Items]
Losses and credit expire	2031
State tax jurisdictions [Member]
Income Tax [Line Items]
Valuation allowance for deferred tax asset	19,400,000
U.S. federal [Member]
Income Tax [Line Items]
Loss carryforwards	23,800,000
Credit carryforwards	30,900,000
State [Member]
Income Tax [Line Items]
Loss carryforwards	50,800,000
Credit carryforwards	$ 28,600,000