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Assets - Available-For-Sale Securities (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended |
--- | --- | --- | ---
Sep. 30, 2024 | Sep. 30, 2024 | Dec. 31, 2023
Total available-for-sale securities |  |  |
Amortized Cost | $ 157,423 | $ 157,423 | $ 146,775
Gross Unrealized Gains | 174 | 174 | 18
Gross Unrealized Losses | (63) | (63) | (129)
Estimated Fair Value | 157,534 | 157,534 | 146,664
Available-for-sale securities in a loss position |  |  |
Investments, Continuous loss position for less than 12 months, Estimated Fair Value | 69,742 | 69,742 | 101,265
Investments, Continuous loss position for less than 12 months, Gross Unrealized Losses | (63) | (63) | (114)
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, Due in one year or less | 145,355 | 145,355 |
Amortized Cost, Due after one year through two years | 12,068 | 12,068 |
Amortized Cost | 157,423 | 157,423 | 146,775
Contractual maturities - Estimated Fair Value |  |  |
Estimated Fair Value, Due in one year or less | 145,489 | 145,489 |
Estimated Fair Value, Due after one year through two years | 12,045 | 12,045 |
Available-for-sale Securities, Debt Securities, Total | 157,534 | 157,534 | 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 | 71,317 | 71,317 | 59,541
Gross Unrealized Gains | 86 | 86 | 3
Gross Unrealized Losses | (10) | (10) | (51)
Estimated Fair Value | 71,393 | 71,393 | 59,493
Available-for-sale securities in a loss position |  |  |
Investments, Continuous loss position for less than 12 months, Estimated Fair Value | 37,809 | 37,809 | 43,118
Investments, Continuous loss position for less than 12 months, Gross Unrealized Losses | (10) | (10) | (50)
Contractual maturities - Amortized Cost |  |  |
Amortized Cost | 71,317 | 71,317 | 59,541
Contractual maturities - Estimated Fair Value |  |  |
Available-for-sale Securities, Debt Securities, Total | 71,393 | 71,393 | 59,493
Government agency securities |  |  |
Total available-for-sale securities |  |  |
Amortized Cost | 18,752 | 18,752 | 41,843
Gross Unrealized Gains | 26 | 26 | 6
Gross Unrealized Losses | (21) | (21) | (31)
Estimated Fair Value | 18,757 | 18,757 | 41,818
Available-for-sale securities in a loss position |  |  |
Investments, Continuous loss position for less than 12 months, Estimated Fair Value | 7,238 | 7,238 | 34,885
Investments, Continuous loss position for less than 12 months, Gross Unrealized Losses | (21) | (21) | (31)
Contractual maturities - Amortized Cost |  |  |
Amortized Cost | 18,752 | 18,752 | 41,843
Contractual maturities - Estimated Fair Value |  |  |
Available-for-sale Securities, Debt Securities, Total | 18,757 | 18,757 | 41,818
Corporate debt |  |  |
Total available-for-sale securities |  |  |
Amortized Cost | 67,354 | 67,354 | 35,447
Gross Unrealized Gains | 62 | 62 | 9
Gross Unrealized Losses | (32) | (32) | (47)
Estimated Fair Value | 67,384 | 67,384 | 35,409
Available-for-sale securities in a loss position |  |  |
Investments, Continuous loss position for less than 12 months, Estimated Fair Value | 24,695 | 24,695 | 23,262
Investments, Continuous loss position for less than 12 months, Gross Unrealized Losses | (32) | (32) | (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 | 67,354 | 67,354 | 35,447
Contractual maturities - Estimated Fair Value |  |  |
Available-for-sale Securities, Debt Securities, Total | $ 67,384 | $ 67,384 | 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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