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Marketable Securities (Details) - USD ($) $ in Thousands | Dec. 31, 2022 | Dec. 31, 2021
--- | --- | ---
Amortized Cost |  |
Amortized Cost | $ 276,859 | $ 369,809
Gross Unrealized Gains |  |
Gross Unrealized Gains | 5 |
Gross Unrealized Losses |  |
Gross Unrealized Losses | (1,341) | (702)
Fair Value |  |
Fair Value | 275,523 | 369,107
U.S. government and municipal obligations |  |
Amortized Cost |  |
Maturing in one year or less | 97,246 | 80,674
Maturing after one year through three years |  | 51,319
Amortized Cost | 97,246 | 131,993
Gross Unrealized Gains |  |
Maturing in one year or less | 5 |
Gross Unrealized Gains | 5 |
Gross Unrealized Losses |  |
Maturing in one year or less | (369) | (133)
Maturing after one year through three years |  | (184)
Gross Unrealized Losses | (369) | (317)
Fair Value |  |
Maturing in one year or less | 96,882 | 80,541
Maturing after one year through three years |  | 51,135
Fair Value | 96,882 | 131,676
Corporate debt securities |  |
Amortized Cost |  |
Maturing in one year or less | 179,613 | 170,034
Maturing after one year through three years |  | 67,782
Amortized Cost | 179,613 | 237,816
Gross Unrealized Losses |  |
Maturing in one year or less | (972) | (28)
Maturing after one year through three years |  | (357)
Gross Unrealized Losses | (972) | (385)
Fair Value |  |
Maturing in one year or less | 178,641 | 170,006
Maturing after one year through three years |  | 67,425
Fair Value | $ 178,641 | $ 237,431

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