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Financial Instruments - Unrealized Losses for Investments in a Continuous Unrealized Loss Position (Details) - USD ($) $ in Thousands | Dec. 31, 2023 | Dec. 31, 2022
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Debt Securities, Available-for-Sale, Unrealized Loss Position [Line Items] |  |
Less than 12 months, fair value | $ 7,065 | $ 21,554
12 months or greater, fair value | 32,612 | 74,205
Fair value | 39,677 | 95,759
Less than 12 months, unrealized loss | (23) | (639)
12 months or greater, unrealized loss | (789) | (2,992)
Unrealized loss | (812) | (3,631)
Corporate bonds |  |
Debt Securities, Available-for-Sale, Unrealized Loss Position [Line Items] |  |
Less than 12 months, fair value | 0 | 10,639
12 months or greater, fair value | 27,939 | 54,634
Fair value | 27,939 | 65,273
Less than 12 months, unrealized loss | 0 | (440)
12 months or greater, unrealized loss | (676) | (2,475)
Unrealized loss | (676) | (2,915)
U.S. government treasury bonds |  |
Debt Securities, Available-for-Sale, Unrealized Loss Position [Line Items] |  |
Less than 12 months, fair value | 2,044 | 5,262
12 months or greater, fair value | 2,712 | 14,748
Fair value | 4,756 | 20,010
Less than 12 months, unrealized loss | (11) | (177)
12 months or greater, unrealized loss | (88) | (372)
Unrealized loss | (99) | (549)
Asset-backed securities |  |
Debt Securities, Available-for-Sale, Unrealized Loss Position [Line Items] |  |
Less than 12 months, fair value | 1,018 | 2,636
12 months or greater, fair value | 83 | 1,275
Fair value | 1,101 | 3,911
Less than 12 months, unrealized loss | (1) | (17)
12 months or greater, unrealized loss | 0 | (20)
Unrealized loss | (1) | (37)
Municipal bonds |  |
Debt Securities, Available-for-Sale, Unrealized Loss Position [Line Items] |  |
Less than 12 months, fair value | 0 | 0
12 months or greater, fair value | 700 | 2,412
Fair value | 700 | 2,412
Less than 12 months, unrealized loss | 0 | 0
12 months or greater, unrealized loss | (2) | (61)
Unrealized loss | (2) | (61)
U.S. government agency bonds |  |
Debt Securities, Available-for-Sale, Unrealized Loss Position [Line Items] |  |
Less than 12 months, fair value | 4,003 | 3,017
12 months or greater, fair value | 1,178 | 1,136
Fair value | 5,181 | 4,153
Less than 12 months, unrealized loss | (11) | (5)
12 months or greater, unrealized loss | (23) | (64)
Unrealized loss | $ (34) | $ (69)

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