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Goodwill and Other Intangible Assets (Tables) | 12 Months Ended
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Dec. 31, 2025
Goodwill and Intangible Assets Disclosure [Abstract] |
Carrying Value of Intangible Assets Subject to Amortization | Identifiable intangible assets with finite lives are amortized over the periods benefited and are evaluated for impairment similar to other long-lived assets. The purchase and carrying values of intangible assets subject to amortization at December 31, 2025 and 2024 were as follows:
| December 31, 2025 |
| Purchase |  | Accumulated |  | Carrying |
($ in thousands) | Value |  | Amortization |  | Value |
Core deposit intangibles | $ | 235,845 |  | $ | 223,561 |  | $ | 12,284 |
Credit card and trust relationships |  | 80,662 |  |  | 25,875 |  |  | 54,787 |
Total | $ | 316,507 |  | $ | 249,436 |  | $ | 67,071 |
| December 31, 2024 |
| Purchase |  | Accumulated |  | Carrying |
($ in thousands) | Value |  | Amortization |  | Value |
Core deposit intangibles | $ | 235,845 |  | $ | 217,260 |  | $ | 18,585 |
Credit card and trust relationships |  | 49,962 |  |  | 33,323 |  |  | 16,639 |
Total | $ | 285,807 |  | $ | 250,583 |  | $ | 35,224 |
Aggregate Amortization Expense | Aggregate amortization expense by category of finite lived intangible assets for the years ended December 31, 2025, 2024, and 2023 are as follows:
| Years Ended December 31, |
($ in thousands) | 2025 |  | 2024 |  | 2023 |
Core deposit intangibles | $ | 6,301 |  | $ | 7,602 |  | $ | 9,613 |
Credit card and trust relationships |  | 3,652 |  |  | 1,811 |  |  | 1,943 |
Total | $ | 9,953 |  | $ | 9,413 |  | $ | 11,556 |
Estimated Amortization Expense of Other Intangible Assets | The following table shows estimated amortization expense of other intangible assets at December 31, 2025 for the five succeeding years and all years thereafter, calculated based on current amortization schedules.
($ in thousands) |  |
2026 | $ | 8,175 |
2027 |  | 6,393 |
2028 |  | 5,881 |
2029 |  | 5,429 |
2030 |  | 5,016 |
Thereafter |  | 36,177 |
Total | $ | 67,071 |

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- Definition Tabular disclosure of assets, excluding financial assets and goodwill, lacking physical substance with a finite life, by either major class or business segment. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Name Accounting Standards Codification -Section 55 -Paragraph 40 -SubTopic 30 -Topic 350 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482640/350-30-55-40 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 350 -SubTopic 30 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482665/350-30-50-2 + Details
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