Fair value of financial instruments and marketable securities - Marketable Securities, Unrealized Gains (Losses) (Details) - USD ($) |
3 Months Ended | 9 Months Ended | |||
---|---|---|---|---|---|
Sep. 30, 2024 |
Sep. 30, 2023 |
Sep. 30, 2024 |
Sep. 30, 2023 |
Dec. 31, 2023 |
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Debt Securities, Available-for-sale [Line Items] | |||||
Amortized Cost | $ 455,568,000 | $ 455,568,000 | $ 259,778,000 | ||
Gross Unrealized, Gain | 2,538,000 | 2,538,000 | 340,000 | ||
Gross Unrealized, Loss | (8,000) | (8,000) | (14,000) | ||
Fair Value | 458,098,000 | 458,098,000 | 260,104,000 | ||
Write downs of available for sale debt securities | 0 | $ 0 | 0 | $ 0 | |
Increase in allowance for credit losses | 0 | 0 | 0 | 0 | |
Realized gain (loss) from sale of marketable securities | 800,000 | $ 0 | 800,000 | $ (300,000) | |
Commercial paper | |||||
Debt Securities, Available-for-sale [Line Items] | |||||
Amortized Cost | 118,783,000 | 118,783,000 | 117,044,000 | ||
Gross Unrealized, Gain | 636,000 | 636,000 | 128,000 | ||
Gross Unrealized, Loss | (12,000) | ||||
Fair Value | 119,419,000 | 119,419,000 | 117,160,000 | ||
Corporate debt securities | |||||
Debt Securities, Available-for-sale [Line Items] | |||||
Amortized Cost | 44,494,000 | 44,494,000 | 1,650,000 | ||
Gross Unrealized, Gain | 156,000 | 156,000 | |||
Gross Unrealized, Loss | (8,000) | (8,000) | (2,000) | ||
Fair Value | 44,642,000 | 44,642,000 | 1,648,000 | ||
Government obligations | |||||
Debt Securities, Available-for-sale [Line Items] | |||||
Amortized Cost | 292,291,000 | 292,291,000 | 141,084,000 | ||
Gross Unrealized, Gain | 1,746,000 | 1,746,000 | 212,000 | ||
Fair Value | $ 294,037,000 | $ 294,037,000 | $ 141,296,000 |
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- Definition Amount, before tax, of unrealized gain 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://www.xbrl.org/2003/role/disclosureRef
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- 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://www.xbrl.org/2003/role/disclosureRef
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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). Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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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). Reference 1: http://www.xbrl.org/2003/role/exampleRef
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- Definition Amount of increase (decrease) in 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/2009/role/commonPracticeRef
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- Definition Amount of writeoff 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 Amount of realized gain (loss) on investment in debt security measured at fair value with change in fair value recognized in net income (trading). Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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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. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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