Income Taxes - Summary of Gross and Tax Affected Deferred Tax Asset Recorded (Detail) (USD $) In Thousands, unless otherwise specified	6 Months Ended
Jun. 30, 2014	Mar. 31, 2014
Income Tax Disclosure [Abstract]
Stock-based compensation	$ 15,404
Deferred rent liability	5,369
Other	109
Total gross deferred tax asset	20,882
Income tax rate	45.43%
Tax affected	$ 9,487	$ 13,725

Amount after allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences and carryforwards, net of deferred tax liability attributable to taxable temporary differences expected to be realized or consumed after one year (or the normal operating cycle, if longer).

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Amount before allocation of valuation allowances of deferred tax asset attributable to deductible operating loss carryforwards.

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Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences not separately disclosed.

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Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from share-based compensation.

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Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from deferred rent.

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Percentage of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to changes in the valuation allowance for deferred tax assets.

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