Investment Securities - Activity in Allowance for Credit Losses for Held-to-Maturity Securities by Major Type (Details) - USD ($) $ in Thousands |
6 Months Ended | 12 Months Ended | |||
|---|---|---|---|---|---|
Jun. 30, 2026 |
Dec. 31, 2025 |
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| Investment Securities [Abstract] | |||||
| Beginning balance | $ 450 | $ 450 | |||
| Provision for credit losses | 0 | 0 | |||
| Ending balance | 450 | 450 | |||
| Municipal Securities [Member] | |||||
| Investment Securities [Abstract] | |||||
| Beginning balance | 450 | 450 | |||
| Provision for credit losses | 0 | 0 | |||
| Ending balance | 450 | 450 | |||
| Mortgage-backed Securities [Member] | |||||
| Investment Securities [Abstract] | |||||
| Beginning balance | 0 | [1] | 0 | ||
| Provision for credit losses | 0 | 0 | |||
| Ending balance | [1] | 0 | 0 | ||
| Collateralized Mortgage Obligations [Member] | |||||
| Investment Securities [Abstract] | |||||
| Beginning balance | 0 | [1] | 0 | ||
| Provision for credit losses | 0 | 0 | |||
| Ending balance | [1] | $ 0 | $ 0 | ||
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