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Cash and Marketable Securities - Components of Marketable Securities (Details) - USD ($) $ in Thousands | Mar. 31, 2023 | Dec. 31, 2022
--- | --- | ---
Short-term marketable securities |  |
Amortized Cost | $ 211,279 | $ 203,168
Unrealized Holding Losses | 1,335 | 232
Fair Value | 212,614 | 203,400
Long-term marketable securities |  |
Amortized Cost | 5,100 | 5,000
Unrealized Holding Losses | (3,828) | (2,924)
Fair Value | 1,272 | 2,076
Amortized Cost | 216,379 | 208,168
Unrealized Holding Losses | (2,493) | (2,692)
Fair Value | 213,886 | 205,476
U.S. agency securities |  |
Short-term marketable securities |  |
Debt securities, amortized cost | 92,947 | 79,347
Unrealized holding gain | 1,222 | 452
Debt securities, fair value | 94,169 | 79,799
Corporate debt securities |  |
Short-term marketable securities |  |
Debt securities, amortized cost | 118,332 | 123,821
Unrealized holding gain | 113 |
Unrealized holding loss |  | (220)
Debt securities, fair value | 118,445 | 123,601
Long-term marketable securities |  |
Debt securities, amortized cost | 0 |
Debt securities, unrealized holding gains (losses) | 0 |
Fair value | 0 |
Corporate equity securities |  |
Long-term marketable securities |  |
Equity securities, amortized cost | 5,100 | 5,000
Equity securities, unrealized holding gains (losses) | (3,828) | (2,924)
Corporate equity securities | $ 1,272 | $ 2,076

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