Fair Value Measurements - Schedule of Reconciliation of CVR Liability (Detail) - Level 3 Inputs [Member] - Contingent Value Right [Member] |
9 Months Ended | |||
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Sep. 30, 2019
USD ($)
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| Fair Value Liabilities Measured On Recurring Basis Unobservable Input Reconciliation [Line Items] | ||||
| Fair value as of December 31, 2018 | $ 15,700,000 | |||
| Net unrealized gain | (15,700,000) | [1] | ||
| Fair value as of September 30, 2019 | $ 0 | |||
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- Definition Non transferable contractual contingent value right agreement fair value. No definition available.
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. No definition available.
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- Definition Amount of gain (loss) recognized in income from liability measured at fair value on recurring basis using unobservable input (level 3). Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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