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Fair Value of Financial Instruments - Summary of Fair Value Measurement of Assets and Liabilities Measured at Fair Value on a Nonrecurring Basis (Details) - Fair Value, Nonrecurring - Estimated Fair Value - USD ($) $ in Thousands | Sep. 30, 2025 | Mar. 31, 2025
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Assets, Fair Value Disclosure [Abstract] |  |
Individually evaluated loans | $ 0 | $ 772
Total assets at fair value | 0 | 772
Level 3 |  |
Assets, Fair Value Disclosure [Abstract] |  |
Individually evaluated loans | 0 | 772
Total assets at fair value | $ 0 | $ 772

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