Provision for Income Taxes - Schedule of Loss Before Provision for Income Taxes (Detail) - USD ($) $ in Thousands |
12 Months Ended | |
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Dec. 31, 2019 |
Dec. 31, 2018 |
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| Income Taxes Disclosure [Line Items] | ||
| Loss before provision for income taxes | $ (63,530) | $ (61,082) |
| United States of America [Member] | ||
| Income Taxes Disclosure [Line Items] | ||
| Loss before provision for income taxes | (63,624) | (61,169) |
| Foreign [Member] | ||
| Income Taxes Disclosure [Line Items] | ||
| Loss before provision for income taxes | $ 94 | $ 87 |
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- Definition Amount of income (loss) from continuing operations, including income (loss) from equity method investments, before deduction of income tax expense (benefit), and income (loss) attributable to noncontrolling interest. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Income Taxes Disclosure [Line Items] No definition available.
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