Investments (Details) - USD ($) |
3 Months Ended | ||
|---|---|---|---|
Mar. 31, 2022 |
Mar. 31, 2021 |
Dec. 31, 2021 |
|
| Debt Securities, Available-for-sale [Line Items] | |||
| Amortized cost | $ 133,549,000 | $ 32,349,000 | |
| Unrealized losses | (396,000) | (17,000) | |
| Fair value | 133,153,000 | 32,332,000 | |
| Investment, available-for-sale, current | 128,269,000 | 32,332,000 | |
| Available-for-sale securities, credit losses recognized | 0 | $ 0 | |
| Available-for-sale securities, allowance for credit loss | 0 | 0 | |
| Realized gains (loses) | 0 | $ 0 | |
| Corporate bonds | |||
| Debt Securities, Available-for-sale [Line Items] | |||
| Amortized cost | 30,154,000 | 32,349,000 | |
| Unrealized losses | (139,000) | (17,000) | |
| Fair value | 30,015,000 | 32,332,000 | |
| Commercial paper | |||
| Debt Securities, Available-for-sale [Line Items] | |||
| Amortized cost | 81,037,000 | 0 | |
| Unrealized losses | (226,000) | 0 | |
| Fair value | 80,811,000 | 0 | |
| U.S. treasury bills | |||
| Debt Securities, Available-for-sale [Line Items] | |||
| Amortized cost | 22,358,000 | 0 | |
| Unrealized losses | (31,000) | 0 | |
| Fair value | 22,327,000 | $ 0 | |
| Investment, available for sale, noncurrent | $ 4,900,000 | ||
| X | ||||||||||
- Definition Amount, before tax, of unrealized loss in accumulated other comprehensive income (AOCI) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale). Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Amount of expense for credit loss on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), for which no credit loss was previously recorded. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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| X | ||||||||||
- Definition Amount excluding accrued interest, of allowance for credit loss on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale). Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amortized cost excluding accrued interest, before allowance for credit loss, of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale). Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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| X | ||||||||||
- Definition Amount excluding accrued interest, of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale). Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition Amount excluding accrued interest, of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), classified as current. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition Amount excluding accrued interest, of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), classified as noncurrent. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition Amount of realized gain (loss) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale). Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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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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