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GOODWILL AND IDENTIFIABLE INTANGIBLE ASSETS (Details) - USD ($) $ in Thousands | 6 Months Ended |
--- | --- | ---
Jun. 30, 2023 | Dec. 31, 2022
Identifiable Intangible Assets |  |
Gross carrying amount | $ 201,311 | $ 197,186
Accumulated Amortization | (143,562) | (136,190)
Total | 57,749 | 60,996
Estimated aggregate amortization expense for each of five succeeding fiscal years |  |
Jul - Dec 2023 | 6,988 |
2024 | 12,435 |
2025 | 10,603 |
2026 | 9,350 |
2027 | 3,823 |
Thereafter | 14,550 |
Total | 57,749 | 60,996
Components of goodwill |  |
Goodwill, beginning of period | 841,841 |
Goodwill, activity | 2,119 |
Goodwill, end of period | 843,960 |
Core Deposit Intangibles |  |
Identifiable Intangible Assets |  |
Gross carrying amount | 77,373 | 77,373
Accumulated Amortization | (67,348) | (65,069)
Total | 10,025 | 12,304
Estimated aggregate amortization expense for each of five succeeding fiscal years |  |
Total | 10,025 | 12,304
Other Intangibles |  |
Identifiable Intangible Assets |  |
Gross carrying amount | 123,938 | 119,813
Accumulated Amortization | (76,214) | (71,121)
Total | 47,724 | 48,692
Estimated aggregate amortization expense for each of five succeeding fiscal years |  |
Total | $ 47,724 | $ 48,692

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