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Supplementary Balance Sheet Information - Investments Available-for-sale (Details) - USD ($) $ in Thousands | Dec. 31, 2025 | Dec. 31, 2024
--- | --- | ---
Maturity less than 1 year: |  |
Amortized Cost | $ 31,925 | $ 33,979
Gross Unrealized Gains | 24 | 31
Gross Unrealized Losses | (2) | (5)
Fair Market Value | 31,947 | 34,005
Maturity 1 to 2 years: |  |
Amortized Cost | 8,859 | 6,263
Gross Unrealized Gains | 29 | 11
Gross Unrealized Losses | (1) | (3)
Fair Market Value | 8,887 | 6,271
Amortized Cost | 40,784 | 40,242
Gross Unrealized Gains | 53 | 42
Gross Unrealized Losses | (3) | (8)
Fair Market Value | 40,834 | 40,276
Certificate of deposit |  |
Maturity less than 1 year: |  |
Amortized Cost | 143 |
Gross Unrealized Gains | 0 |
Gross Unrealized Losses | 0 |
Fair Market Value | 143 |
Corporate debt securities |  |
Maturity less than 1 year: |  |
Amortized Cost | 23,699 | 17,192
Gross Unrealized Gains | 18 | 27
Gross Unrealized Losses | (2) | (1)
Fair Market Value | 23,715 | 17,218
Maturity 1 to 2 years: |  |
Amortized Cost | 4,940 | 6,263
Gross Unrealized Gains | 15 | 11
Gross Unrealized Losses | (1) | (3)
Fair Market Value | 4,954 | 6,271
Commercial paper |  |
Maturity less than 1 year: |  |
Amortized Cost | 413 | 312
Gross Unrealized Gains | 0 | 1
Gross Unrealized Losses | 0 | 0
Fair Market Value | 413 | 313
U.S. government agencies |  |
Maturity less than 1 year: |  |
Amortized Cost | 2,872 |
Gross Unrealized Gains | 4 |
Gross Unrealized Losses | 0 |
Fair Market Value | 2,876 |
U.S. treasury securities |  |
Maturity less than 1 year: |  |
Amortized Cost | 4,798 | 16,475
Gross Unrealized Gains | 2 | 3
Gross Unrealized Losses | 0 | (4)
Fair Market Value | 4,800 | $ 16,474
Maturity 1 to 2 years: |  |
Amortized Cost | 3,919 |
Gross Unrealized Gains | 14 |
Gross Unrealized Losses | 0 |
Fair Market Value | $ 3,933 |

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