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Marketable Securities - Summary of Marketable Securities (Details) - USD ($) $ in Thousands | Mar. 31, 2022 | Dec. 31, 2021
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Debt Securities, Available-for-sale, Fair Value to Amortized Cost [Abstract] |  |
Adjusted Cost | $ 63,940 | $ 106,812
Unrealized Gains | 356 | 948
Unrealized Losses | (1,688) | (1,247)
Fair Value | 62,608 | 106,513
Mutual and money market funds |  |
Debt Securities, Available-for-sale, Fair Value to Amortized Cost [Abstract] |  |
Adjusted Cost | 43,446 | 78,331
Unrealized Gains | 341 | 813
Unrealized Losses | (1,011) | (1,046)
Fair Value | 42,776 | 78,098
Corporate bonds |  |
Debt Securities, Available-for-sale, Fair Value to Amortized Cost [Abstract] |  |
Adjusted Cost | 14,338 | 16,478
Unrealized Gains | 12 | 94
Unrealized Losses | (438) | (93)
Fair Value | 13,912 | 16,479
Government securities - U.S. |  |
Debt Securities, Available-for-sale, Fair Value to Amortized Cost [Abstract] |  |
Adjusted Cost | 4,188 | 9,530
Unrealized Gains | 3 | 39
Unrealized Losses | (203) | (98)
Fair Value | 3,988 | 9,471
Other fixed-income securities |  |
Debt Securities, Available-for-sale, Fair Value to Amortized Cost [Abstract] |  |
Adjusted Cost | 1,968 | 2,473
Unrealized Gains | 0 | 2
Unrealized Losses | (36) | (10)
Fair Value | $ 1,932 | $ 2,465

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- Definition Amount, before tax, of unrealized gain in accumulated other comprehensive income (AOCI) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=123581744&loc=d3e27161-111563 + Details
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