Balance Sheet Components - Prepaid Expenses and Other Current Assets (Detail) - USD ($) $ in Thousands |
Sep. 30, 2020 |
Dec. 31, 2019 |
|---|---|---|
| Balance Sheet Related Disclosures [Abstract] | ||
| Equity related withholding tax and exercise proceeds receivable | $ 339,409 | |
| Other prepaid expenses and current assets | 48,756 | $ 32,585 |
| Total prepaid expenses and other current assets | $ 388,165 | $ 32,585 |
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- Definition Option Exercise And Tax Witholding Receivable Current No definition available.
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- References No definition available.
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- Definition Amount of asset related to consideration paid in advance for other costs that provide economic benefits within a future period of one year or the normal operating cycle, if longer. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition Amount of asset related to consideration paid in advance for costs that provide economic benefits in future periods, and amount of other assets that are expected to be realized or consumed within one year or the normal operating cycle, if longer. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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