Cash, restricted cash, cash equivalents, and available for sale investments.

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Number of operating business segment.

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Organization and summary of significant accounting policies.

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Amount equal to the present value (the principal) at the beginning of the lease term of minimum lease payments during the lease term (excluding that portion of the payments representing executory costs such as insurance, maintenance, and taxes to be paid by the lessor, together with any profit thereon) net of payments or other amounts applied to the principal through the balance sheet date.

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Amount of capital lease obligation due within one year or the normal operating cycle, if longer.

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Sum of the carrying values as of the balance sheet date of all debt, including all short-term borrowings, long-term debt, and capital lease obligations.

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Percentage of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

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Amount of cumulative effect of the change in accounting principle or new accounting pronouncement on retained earnings or other components of equity or net assets in the statement of financial position as of the beginning of the earliest period presented.

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Including the current and noncurrent portions, carrying value as of the balance sheet date of Notes with the highest claim on the assets of the issuer in case of bankruptcy or liquidation (with maturities initially due after one year or beyond the operating cycle if longer). Senior note holders are paid off in full before any payments are made to junior note holders.

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Organization and Summary of Significant Accounting Policies - Additional Information (Detail) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017 USD ($)	Sep. 30, 2016	Sep. 30, 2017 USD ($) Segment	Sep. 30, 2016	Jan. 01, 2017 USD ($)	Dec. 31, 2016 USD ($)
Organization And Summary Of Significant Accounting Policies [Line Items]
Cash and investments in marketable securities	$ 412,163		$ 412,163			$ 389,102
Senior secured notes	250,000		250,000
Debt and capital lease obligation	253,000		253,000
Capital lease obligations	3,000		3,000
Capital lease obligations, current portion	$ 2,482		$ 2,482			2,908
Number of operating business segment \| Segment			1
Adoption of New Accounting Principles [Member] \| Other Current Assets [Member]
Organization And Summary Of Significant Accounting Policies [Line Items]
Impact of reclassification due to adoption of new accounting pronouncement					$ 300
Accumulated Deficit [Member] \| Adoption of New Accounting Principles [Member]
Organization And Summary Of Significant Accounting Policies [Line Items]
Impact of reclassification due to adoption of new accounting pronouncement					$ 200
Federal [Member] \| Stock Option Windfall Deductions \| Adoption of New Accounting Principles [Member]
Organization And Summary Of Significant Accounting Policies [Line Items]
Impact of reclassification due to adoption of new accounting pronouncement						20,600
State [Member] \| Stock Option Windfall Deductions \| Adoption of New Accounting Principles [Member]
Organization And Summary Of Significant Accounting Policies [Line Items]
Impact of reclassification due to adoption of new accounting pronouncement						$ 9,800
India
Organization And Summary Of Significant Accounting Policies [Line Items]
Effective income tax rate – India	35.00%	35.00%	35.00%	35.00%