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Assets - Available-For-Sale Securities (Details) - USD ($) $ in Thousands | 6 Months Ended |
--- | --- | ---
Jun. 30, 2024 | Jun. 30, 2023 | Dec. 31, 2023
Total available-for-sale securities |  |  |
Amortized Cost | $ 130,943 |  | $ 146,775
Gross Unrealized Gains |  |  | 18
Gross Unrealized Losses | (247) |  | (129)
Estimated Fair Value | 130,696 |  | 146,664
Available-for-sale securities in a loss position |  |  |
Investments, Continuous loss position for less than 12 months, Estimated Fair Value | 123,387 |  | 101,265
Investments, Continuous loss position for less than 12 months, Gross Unrealized Losses | (243) |  | (114)
Investments, Continuous loss position for 12 months or more, Estimated Fair Value | 6,723 |  | 2,618
Investments, Continuous loss position for 12 months or more, Gross Unrealized Losses | (4) |  | (15)
Contractual maturities - Amortized Cost |  |  |
Amortized Cost, Due in one year or less | 129,427 |  |
Amortized Cost, Due after one year through two years | 1,516 |  |
Amortized Cost | 130,943 |  | 146,775
Contractual maturities - Estimated Fair Value |  |  |
Estimated Fair Value, Due in one year or less | 129,190 |  |
Estimated Fair Value, Due after one year through two years | 1,506 |  |
Available-for-sale Securities, Debt Securities, Total | 130,696 |  | 146,664
Realized gains or losses |  |  |
Realized gains or losses | 0 | $ 0 |
Unrealized losses | 0 | $ 0 |
U.S. treasuries |  |  |
Total available-for-sale securities |  |  |
Amortized Cost | 58,541 |  | 59,541
Gross Unrealized Gains |  |  | 3
Gross Unrealized Losses | (103) |  | (51)
Estimated Fair Value | 58,438 |  | 59,493
Available-for-sale securities in a loss position |  |  |
Investments, Continuous loss position for less than 12 months, Estimated Fair Value | 58,438 |  | 43,118
Investments, Continuous loss position for less than 12 months, Gross Unrealized Losses | (103) |  | (50)
Contractual maturities - Amortized Cost |  |  |
Amortized Cost | 58,541 |  | 59,541
Contractual maturities - Estimated Fair Value |  |  |
Available-for-sale Securities, Debt Securities, Total | 58,438 |  | 59,493
Government agency securities |  |  |
Total available-for-sale securities |  |  |
Amortized Cost | 18,095 |  | 41,843
Gross Unrealized Gains |  |  | 6
Gross Unrealized Losses | (27) |  | (31)
Estimated Fair Value | 18,068 |  | 41,818
Available-for-sale securities in a loss position |  |  |
Investments, Continuous loss position for less than 12 months, Estimated Fair Value | 11,345 |  | 34,885
Investments, Continuous loss position for less than 12 months, Gross Unrealized Losses | (23) |  | (31)
Investments, Continuous loss position for 12 months or more, Estimated Fair Value | 6,723 |  |
Investments, Continuous loss position for 12 months or more, Gross Unrealized Losses | (4) |  |
Contractual maturities - Amortized Cost |  |  |
Amortized Cost | 18,095 |  | 41,843
Contractual maturities - Estimated Fair Value |  |  |
Available-for-sale Securities, Debt Securities, Total | 18,068 |  | 41,818
Corporate debt |  |  |
Total available-for-sale securities |  |  |
Amortized Cost | 54,307 |  | 35,447
Gross Unrealized Gains |  |  | 9
Gross Unrealized Losses | (117) |  | (47)
Estimated Fair Value | 54,190 |  | 35,409
Available-for-sale securities in a loss position |  |  |
Investments, Continuous loss position for less than 12 months, Estimated Fair Value | 53,604 |  | 23,262
Investments, Continuous loss position for less than 12 months, Gross Unrealized Losses | (117) |  | (33)
Investments, Continuous loss position for 12 months or more, Estimated Fair Value |  |  | 2,618
Investments, Continuous loss position for 12 months or more, Gross Unrealized Losses |  |  | (15)
Contractual maturities - Amortized Cost |  |  |
Amortized Cost | 54,307 |  | 35,447
Contractual maturities - Estimated Fair Value |  |  |
Available-for-sale Securities, Debt Securities, Total | $ 54,190 |  | 35,409
Commercial paper |  |  |
Total available-for-sale securities |  |  |
Amortized Cost |  |  | 9,944
Estimated Fair Value |  |  | 9,944
Contractual maturities - Amortized Cost |  |  |
Amortized Cost |  |  | 9,944
Contractual maturities - Estimated Fair Value |  |  |
Available-for-sale Securities, Debt Securities, Total |  |  | $ 9,944

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