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Financial Instruments - Unrealized Losses for Investments in a Continuous Unrealized Loss Position (Details) - USD ($) $ in Thousands | Jun. 30, 2023 | Dec. 31, 2022
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Debt Securities, Available-for-Sale, Unrealized Loss Position [Line Items] |  |
Less than 12 months, fair value | $ 10,045 | $ 21,554
12 months or greater, fair value | 70,755 | 74,205
Fair value | 80,800 | 95,759
Less than 12 months, unrealized loss | (85) | (639)
12 months or greater, unrealized loss | (2,095) | (2,992)
Unrealized loss | (2,180) | (3,631)
Corporate bonds |  |
Debt Securities, Available-for-Sale, Unrealized Loss Position [Line Items] |  |
Less than 12 months, fair value | 1,514 | 10,639
12 months or greater, fair value | 56,155 | 54,634
Fair value | 57,669 | 65,273
Less than 12 months, unrealized loss | (15) | (440)
12 months or greater, unrealized loss | (1,725) | (2,475)
Unrealized loss | (1,740) | (2,915)
U.S. government treasury bonds |  |
Debt Securities, Available-for-Sale, Unrealized Loss Position [Line Items] |  |
Less than 12 months, fair value | 1,986 | 5,262
12 months or greater, fair value | 11,743 | 14,748
Fair value | 13,729 | 20,010
Less than 12 months, unrealized loss | (32) | (177)
12 months or greater, unrealized loss | (293) | (372)
Unrealized loss | (325) | (549)
Asset-backed securities |  |
Debt Securities, Available-for-Sale, Unrealized Loss Position [Line Items] |  |
Less than 12 months, fair value | 2,565 | 2,636
12 months or greater, fair value | 1,022 | 1,275
Fair value | 3,587 | 3,911
Less than 12 months, unrealized loss | (5) | (17)
12 months or greater, unrealized loss | (8) | (20)
Unrealized loss | (13) | (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 | 685 | 2,412
Fair value | 685 | 2,412
Less than 12 months, unrealized loss | 0 | 0
12 months or greater, unrealized loss | (18) | (61)
Unrealized loss | (18) | (61)
U.S. government agency bonds |  |
Debt Securities, Available-for-Sale, Unrealized Loss Position [Line Items] |  |
Less than 12 months, fair value | 3,980 | 3,017
12 months or greater, fair value | 1,150 | 1,136
Fair value | 5,130 | 4,153
Less than 12 months, unrealized loss | (33) | (5)
12 months or greater, unrealized loss | (51) | (64)
Unrealized loss | $ (84) | $ (69)

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