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Marketable Securities (Details 3) - USD ($) $ in Thousands | Sep. 30, 2022 | Dec. 31, 2021
--- | --- | ---
Debt securities, available-for-sale |  |
Less than 12 months, fair value | $ 85,936 | $ 338,605
Less than 12 months, gross unrealized losses | (2,356) | (1,071)
12 months or greater, fair value | 44,193 | 0
12 months or greater, gross unrealized losses | (2,036) | 0
Fair value | 130,129 | 338,605
Gross unrealized losses | (4,392) | (1,071)
U.S. Government bonds and notes |  |
Debt securities, available-for-sale |  |
Less than 12 months, fair value | 54,924 | 82,822
Less than 12 months, gross unrealized losses | (1,570) | (301)
12 months or greater, fair value | 11,756 | 0
12 months or greater, gross unrealized losses | (704) | 0
Corporate notes, bonds and commercial paper |  |
Debt securities, available-for-sale |  |
Less than 12 months, fair value | 31,012 | 255,783
Less than 12 months, gross unrealized losses | (786) | (770)
12 months or greater, fair value | 32,437 | 0
12 months or greater, gross unrealized losses | $ (1,332) | $ 0

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