| Disaggregation of Revenue [Table Text Block] |
| | | Three Months Ended June 30, | | | Six Months Ended June 30, | |
| | | 2026 | | | 2025 | | | 2026 | | | 2025 | |
| | | ($ In thousands) | |
| Non-interest income, in-scope: | | | | | | | | | | | | | | | | |
| Fees and service charges on deposit accounts | | $ | 2,636 | | | $ | 2,609 | | | $ | 5,315 | | | $ | 5,045 | |
| Wealth management fees | | | 7,920 | | | | 4,936 | | | | 15,022 | | | | 11,105 | |
| Other service fees(1) | | | 5,312 | | | | 4,759 | | | | 10,078 | | | | 9,243 | |
| Total in-scope non-interest income | | | 15,868 | | | | 12,304 | | | | 30,415 | | | | 25,393 | |
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| Non-interest gain, not in-scope(2) | | | 5,537 | | | | 3,087 | | | | 11,649 | | | | 1,202 | |
| Total non-interest income | | $ | 21,405 | | | $ | 15,391 | | | $ | 42,064 | | | $ | 26,595 | |
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| (1) Other service fees comprise of fees related to letters of credit, wire fees, fees on foreign exchange transactions and other immaterial individual revenue streams. |
| (2) These amounts primarily represent revenue from contracts with clients that are out of the scope of ASC Topic 606 and primarily represent revenue from interest rate swap fees, unrealized gains and losses on equity securities and other miscellaneous income. |
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