Fair Value Measurements and Short-Term Investments - Summary of Changes in Estimated Fair Value of Redeemable Convertible Preferred Stock Warrant Liability (Details) - Redeemable Convertible Preferred Stock Warrant Liability - USD ($) $ in Thousands |
12 Months Ended | |
|---|---|---|
Dec. 31, 2018 |
Dec. 31, 2017 |
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| Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items] | ||
| Beginning Balance | $ 1,708 | $ 1,193 |
| Estimated fair value of warrants issued | 329 | |
| Changes in estimated fair value of warrant liability included in other income (expense), net | (841) | 186 |
| Reclassification of redeemable convertible preferred stock warrantliability to other income upon expiration | (133) | |
| Reclassification of redeemable convertible preferred stock warrantliability to additional paid-in-capital due to conversion tocommon stock warrants upon completion of IPO | $ (734) | |
| Ending Balance | $ 1,708 | |
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- Definition Fair Value of warrants issued. No definition available.
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- Definition Reclassification of redeemable convertible preferred stock warrant liability to other income upon expiration. No definition available.
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- Definition Reclassification of redeemable cconvertible preferred stock warrant to additional paid in capital due converted to common stock warrant upon completion of initial public offering. 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 addition (reduction) to the amount at which a liability could be incurred (settled) in a current transaction between willing parties. No definition available.
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- Definition Fair value of financial and nonfinancial obligations. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Details
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