Debt - Schedule of Net Carrying Amount of Liability and Equity Components of Notes (Detail) $ in Thousands	Jun. 30, 2019 USD ($)
Liability component:
Principal	$ 690,000
Unamortized debt discount	(117,094)
Unamortized transaction costs	(14,512)
Net carrying amount	558,394
Equity component, net of transaction costs	$ 114,974

The carrying amount of the equity component of convertible debt which may be settled in cash upon conversion.

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- Definition

Face (par) amount of debt instrument at time of issuance.

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- Definition

Amount, after accumulated amortization, of debt discount.

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- Definition

Amount, after accumulated amortization, of debt issuance costs. Includes, but is not limited to, legal, accounting, underwriting, printing, and registration costs.

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- Definition

Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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- Definition

Liability component.

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No definition available.

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