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Investments - Aging of Unrealized Losses (Details) $ in Thousands | Sep. 30, 2023 USD ($) security | Dec. 31, 2022 USD ($) security
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Debt Securities, Held-to-maturity, Unrealized Loss Position, Accumulated Loss [Abstract] |  |
Less than 12 months, number of securities | security | 4 | 11
Less than 12 months, fair value | $ 20,716 | $ 58,589
Less than 12 months, unrealized losses | $ (16) | $ (144)
Total number of securities | security | 4 | 11
Total fair value | $ 20,716 | $ 58,589
Total unrealized losses | $ (16) | $ (144)
Commercial paper |  |
Debt Securities, Held-to-maturity, Unrealized Loss Position, Accumulated Loss [Abstract] |  |
Less than 12 months, number of securities | security | 4 | 11
Less than 12 months, fair value | $ 20,716 | $ 58,589
Less than 12 months, unrealized losses | $ (16) | $ (144)
Total number of securities | security | 4 | 11
Total fair value | $ 20,716 | $ 58,589
Total unrealized losses | $ (16) | $ (144)

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