Fair Value Measurements - Additional Information (Details) $ in Thousands |
9 Months Ended |
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Sep. 30, 2019
USD ($)
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| Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items] | |
| Fair value assets transferred from level 1 to level 2 | $ 0 |
| Fair value assets transferred from level 2 to level 1 | 0 |
| Fair value liabilities transferred from level 1 to level 2 | 0 |
| Fair value liabilities transferred from level 2 to level 1 | 0 |
| Other-than-temporary impaired investments | 0 |
| Level 2 Securities | |
| Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items] | |
| Convertible notes | $ 1,300,000 |
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- Definition Fair value portion of borrowing which can be exchanged for a specified number of another security at the option of the issuer or the holder, for example, but not limited to, the entity's common stock. 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 transfers of assets measured on a recurring basis out of Level 1 of the fair value hierarchy into Level 2. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Amount of transfers of assets measured on a recurring basis out of Level 2 of the fair value hierarchy into Level 1. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Amount of transfers of liabilities measured on a recurring basis out of Level 1 of the fair value hierarchy into Level 2. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Amount of transfers of liabilities measured on a recurring basis out of Level 2 of the fair value hierarchy into Level 1. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Amount of other-than-temporary impairment (OTTI) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), recognized in earnings and other comprehensive loss (OCI). Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Details
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