Marketable Securities and Fair Value Measurements - Additional Information (Detail) - USD ($) |
12 Months Ended | |
|---|---|---|
Dec. 31, 2019 |
Dec. 31, 2018 |
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| Schedule Of Available For Sale Securities [Line Items] | ||
| Realized gain or losses | $ 1,300,000 | $ 0 |
| Change in fair value of common stock warrants | $ 3,000 | $ 1,000,000 |
| 2017 Warrants | ||
| Schedule Of Available For Sale Securities [Line Items] | ||
| Shares of common stock to be purchased with warrants | 377,273 | |
| Warrant exercise price | $ 39.82 | |
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- Definition Exercise price per share or per unit of warrants or rights outstanding. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Number of warrants or rights outstanding. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Amount of realized gain (loss) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale). Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition Amount of expense (income) related to adjustment to fair value of warrant liability. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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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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- Details
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