Marketable Securities and Fair Value Measurements - Financial Liabilities at Fair Value on Recurring Basis (Detail) - 2017 Warrants - USD ($) $ in Thousands |
Sep. 30, 2019 |
Dec. 31, 2018 |
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Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items] | ||
Total financial liabilities | $ 0 | $ 3 |
Basis of Fair Value Measurements, Level 1 | ||
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items] | ||
Total financial liabilities | 0 | 0 |
Basis of Fair Value Measurements, Level 2 | ||
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items] | ||
Total financial liabilities | 0 | 0 |
Basis of Fair Value Measurements, Level 3 | ||
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items] | ||
Total financial liabilities | $ 0 | $ 3 |
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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 Fair value of financial and nonfinancial obligations. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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