Regulatory Capital Requirements (Additional Information) (Details) - USD ($) $ in Millions |
6 Months Ended | 12 Months Ended |
|---|---|---|
Jun. 30, 2026 |
Dec. 31, 2025 |
|
| Banking Regulation, Tier 1 Risk-Based Capital [Abstract] | ||
| Capital Leverage ratio | 9.00% | |
| Average Total Consolidated Assets | $ 10,000.0 | |
| Off Balance Sheet Exposureas Percent of Assets Requirement | 25.00% | |
| Percentage of trading assets plus trading liabilities of total consolidated assets | 5.00% | |
| Stockholder equity restricted | $ 68.5 | $ 68.2 |
| Percentage of allowance for credit losses to deposit liablities | 6.00% |