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Goodwill and Other Intangible Assets (Tables) | 12 Months Ended
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Dec. 31, 2022
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, 2022 and 2021 were as follows:
| December 31, 2022 |
| Purchase |  | Accumulated |  | Carrying |
($ in thousands) | Value |  | Amortization |  | Value |
Core deposit intangibles | $ | 235,845 |  | $ | 200,045 |  | $ | 35,800 |
Credit card and trust relationships |  | 49,962 |  |  | 29,569 |  |  | 20,393 |
| $ | 285,807 |  | $ | 229,614 |  | $ | 56,193 |
| December 31, 2021 |
| Purchase |  | Accumulated |  | Carrying |
($ in thousands) | Value |  | Amortization |  | Value |
Core deposit intangibles | $ | 235,845 |  | $ | 188,135 |  | $ | 47,710 |
Credit card and trust relationships |  | 49,962 |  |  | 27,446 |  |  | 22,516 |
| $ | 285,807 |  | $ | 215,581 |  | $ | 70,226 |
Aggregate Amortization Expense | Aggregate amortization expense by category of finite lived intangible assets for the years ended December 31, 2022, 2021, and 2020 are as follows:
| Years Ended December 31, |
($ in thousands) | 2022 |  | 2021 |  | 2020 |
Core deposit intangibles | $ | 11,909 |  | $ | 14,304 |  | $ | 16,864 |
Credit card and trust relationships |  | 2,124 |  |  | 2,361 |  |  | 2,637 |
Merchant processing relationships |  | — |  |  | — |  |  | 415 |
| $ | 14,033 |  | $ | 16,665 |  | $ | 19,916 |
Estimated Amortization Expense of Other Intangible Assets | The following table shows estimated amortization expense of other intangible assets at December 31, 2022 for the five succeeding years and all years thereafter, calculated based on current amortization schedules.
($ in thousands) |  |
2023 | $ | 11,557 |
2024 |  | 9,413 |
2025 |  | 7,985 |
2026 |  | 5,322 |
2027 |  | 3,682 |
Thereafter |  | 18,234 |
| $ | 56,193 |

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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://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a) -URI https://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (a) -URI https://asc.fasb.org/extlink&oid=66006027&loc=d3e16265-109275 + Details
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