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Investment Securities - Summary of Amortized Cost, Unrealized Gains and Losses, Allowances for Credit Losses and Fair Value of Available-for-Sale Investments Aggregated by Maturity and Security Type (Details) - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Mar. 31, 2026 | Dec. 31, 2025
Schedule Of Available For Sale Securities [Line Items] |  |
Debt securities, Amortized Cost | $ 210,321 | $ 202,586
Debt securities, Unrealized Gains | 134 | 414
Debt securities, Unrealized Losses | (402) | (11)
Debt securities, Estimated Fair Value | $ 210,053 | $ 202,989
U.S. Treasury Securities | Within 1 Year |  |
Schedule Of Available For Sale Securities [Line Items] |  |
Debt securities, Maturity | Within 1 year | Within 1 year
Debt securities, Amortized Cost | $ 102,438 | $ 102,285
Debt securities, Unrealized Gains | 121 | 247
Debt securities, Unrealized Losses | (29) |
Debt securities, Estimated Fair Value | $ 102,530 | $ 102,532
U.S. Treasury Securities | Greater than 1 year |  |
Schedule Of Available For Sale Securities [Line Items] |  |
Debt securities, Maturity | Greater than 1 year | Greater than 1 year
Debt securities, Amortized Cost | $ 92,883 | $ 85,301
Debt securities, Unrealized Gains | 13 | 165
Debt securities, Unrealized Losses | (304) | 0
Debt securities, Estimated Fair Value | $ 92,592 | $ 85,466
U.S. Government agency securities | Greater than 1 year |  |
Schedule Of Available For Sale Securities [Line Items] |  |
Debt securities, Maturity | Greater than 1 year | Greater than 1 year
Debt securities, Amortized Cost | $ 15,000 | $ 15,000
Debt securities, Unrealized Gains |  | 2
Debt securities, Unrealized Losses | (69) | (11)
Debt securities, Estimated Fair Value | $ 14,931 | $ 14,991

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