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Investments and Fair Value of Financial Instruments - Gains and Losses of Marketable Investments (Details) - USD ($) $ in Thousands | Mar. 31, 2024 | Dec. 31, 2023
--- | --- | ---
Debt Securities, Available-for-sale [Line Items] |  |
Amortized Cost | $ 90,733 | $ 122,259
Gross Unrealized Gains | 30 | 70
Gross Unrealized Losses | (403) | (628)
Allowance for Credit Loss | 0 | 0
Fair Value | 90,360 | 121,701
Commercial paper |  |
Debt Securities, Available-for-sale [Line Items] |  |
Amortized Cost | 31,449 | 39,727
Gross Unrealized Gains | 7 | 32
Gross Unrealized Losses | (11) | (3)
Allowance for Credit Loss | 0 | 0
Fair Value | 31,445 | 39,756
Certificate of Deposit |  |
Debt Securities, Available-for-sale [Line Items] |  |
Amortized Cost | 4,632 | 6,392
Gross Unrealized Gains | 4 | 9
Gross Unrealized Losses | 0 | 0
Allowance for Credit Loss | 0 | 0
Fair Value | 4,636 | 6,401
U.S. treasury |  |
Debt Securities, Available-for-sale [Line Items] |  |
Amortized Cost | 13,210 | 10,226
Gross Unrealized Gains | 0 | 0
Gross Unrealized Losses | (142) | (160)
Allowance for Credit Loss | 0 | 0
Fair Value | 13,068 | 10,066
U.S. states and municipalities |  |
Debt Securities, Available-for-sale [Line Items] |  |
Amortized Cost | 900 | 2,950
Gross Unrealized Gains | 0 | 0
Gross Unrealized Losses | (9) | (35)
Allowance for Credit Loss | 0 | 0
Fair Value | 891 | 2,915
Corporate bonds |  |
Debt Securities, Available-for-sale [Line Items] |  |
Amortized Cost | 40,542 | 62,964
Gross Unrealized Gains | 19 | 29
Gross Unrealized Losses | (241) | (430)
Allowance for Credit Loss | 0 | 0
Fair Value | 40,320 | $ 62,563
Non-marketable investments |  |
Debt Securities, Available-for-sale [Line Items] |  |
Amortized Cost | 10,000 |
Gross Unrealized Gains | 0 |
Gross Unrealized Losses | 0 |
Allowance for Credit Loss | 0 |
Fair Value | 10,000 |
Marketable And Non-Marketable Investments |  |
Debt Securities, Available-for-sale [Line Items] |  |
Amortized Cost | 100,733 |
Gross Unrealized Gains | 30 |
Gross Unrealized Losses | (403) |
Allowance for Credit Loss | 0 |
Fair Value | $ 100,360 |

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