Fair-Value Measurements - Fair value of investments (Details) - USD ($) $ in Thousands |
3 Months Ended | |
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Mar. 31, 2023 |
Dec. 31, 2022 |
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Fair Value of investment [Line items] | ||
Investment income, interest | $ 3,400 | $ 2,200 |
Amortized cost, current | 367,527 | 183,909 |
Amortized cost, total | 368,581 | 184,963 |
Gross unrealized gains (losses) | 205 | 22 |
Estimated Fair Value, Current | 367,732 | 183,931 |
Estimated Fair Value, total | 368,786 | 184,985 |
US Treasury Securities | ||
Fair Value of investment [Line items] | ||
Amortized cost, current | 293,645 | 99,027 |
Gross unrealized gains (losses) | 205 | 22 |
Estimated Fair Value, Current | 293,850 | 99,049 |
Money Market Funds | ||
Fair Value of investment [Line items] | ||
Amortized cost, current | 73,882 | 84,882 |
Estimated Fair Value, Current | 73,882 | 84,882 |
Certificates of Deposit [Member] | ||
Fair Value of investment [Line items] | ||
Amortized cost, noncurrent | 1,054 | 1,054 |
Estimated Fair Value, Noncurrent | $ 1,054 | $ 1,054 |
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- Definition Fair Value of Investment [Line Items] No definition available.
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- Definition Amount 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/2003/role/disclosureRef
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- Definition Amount, before tax, of unrealized gain (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). No definition available.
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- Definition Amortized cost 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 Amortized cost, after allowance for credit loss, of investment in debt security measured at amortized cost (held-to-maturity) and 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 Fair value of investment in debt security measured at amortized cost (held-to-maturity) and 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, after allowance for credit loss, of investment in debt security measured at amortized cost (held-to-maturity), classified as current. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Fair value of investment in debt security measured at amortized cost (held-to-maturity), classified as noncurrent. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amount before accretion (amortization) of purchase discount (premium) of interest income on nonoperating securities. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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