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GOODWILL AND INTANGIBLE ASSETS (Tables) | 6 Months Ended
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Jun. 30, 2025
Goodwill and Intangible Assets Disclosure [Abstract] |
Schedule of Goodwill and Intangible Assets | Goodwill and intangible assets consist of the following:
(Dollars in thousands) | June 30, 2025 |  | December 31, 2024
Goodwill | $ | 353,900 |  |  | $ | 241,949 |
| June 30, 2025 |  | December 31, 2024
(Dollars in thousands) | Gross Carrying Amount |  | Accumulated Amortization |  | Net Carrying Amount |  | Gross Carrying Amount |  | Accumulated Amortization |  | Net Carrying Amount
Core deposit intangibles | $ | 43,578 |  |  | $ | (41,073) |  |  | $ | 2,505 |  |  | $ | 43,578 |  |  | $ | (40,310) |  |  | $ | 3,268 |
Customer relationship intangibles | 66,394 |  |  | (25,027) |  |  | 41,367 |  |  | 30,014 |  |  | (23,053) |  |  | 6,961 |
Software intangible assets | 26,952 |  |  | (17,420) |  |  | 9,532 |  |  | 18,612 |  |  | (15,168) |  |  | 3,444 |
Other intangible assets | 5,433 |  |  | (3,572) |  |  | 1,861 |  |  | 5,627 |  |  | (3,041) |  |  | 2,586 |
| $ | 142,357 |  |  | $ | (87,092) |  |  | $ | 55,265 |  |  | $ | 97,831 |  |  | $ | (81,572) |  |  | $ | 16,259 |
Schedule of Changes in Goodwill and Intangible Assets | The changes in goodwill and intangible assets during the three and six months ended June 30, 2025 and 2024 are as follows:
| Three Months Ended June 30, |  | Six Months Ended June 30,
(Dollars in thousands) | 2025 |  | 2024 |  | 2025 |  | 2024
Beginning balance | $ | 255,912 |  |  | $ | 257,551 |  |  | $ | 258,208 |  |  | $ | 257,355 |
Acquired goodwill | 111,951 |  |  | — |  |  | 111,951 |  |  | — |
Acquired intangible assets | 44,721 |  |  | — |  |  | 44,844 |  |  | 2,920 |
Amortization of intangibles | (3,400) |  |  | (2,869) |  |  | (5,800) |  |  | (5,593) |
Amortization of intangibles included in lease income | (19) |  |  | (30) |  |  | (38) |  |  | (30) |
Ending balance | $ | 409,165 |  |  | $ | 254,652 |  |  | $ | 409,165 |  |  | $ | 254,652 |

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- Definition Tabular disclosure of goodwill and intangible assets, which may be broken down by segment or major class. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 350 -SubTopic 30 -Name Accounting Standards Codification -Publisher FASB -URI https://asc.fasb.org/350-30/tableOfContent Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 350 -SubTopic 20 -Name Accounting Standards Codification -Publisher FASB -URI https://asc.fasb.org/350-20/tableOfContent + Details
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