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GOODWILL AND IDENTIFIABLE INTANGIBLE ASSETS (Details) - USD ($) $ in Thousands | 6 Months Ended |
--- | --- | ---
Jun. 30, 2022 | Dec. 31, 2021
Identifiable Intangible Assets |  |
Gross Carrying Amount | $ 196,636 | $ 186,202
Accumulated Amortization | (128,558) | (120,976)
Net Carrying Amount | 68,078 | 65,226
Estimated aggregate amortization expense for each of five succeeding fiscal years |  |
Jul - Dec 2022 | 7,609 |
2023 | 13,567 |
2024 | 11,482 |
2025 | 9,783 |
2026 | 8,685 |
Thereafter | 16,952 |
Net Carrying Amount | 68,078 | 65,226
Components of goodwill |  |
Goodwill, net, beginning of period | 799,109 |
Goodwill, net, activity | 50,704 |
Goodwill, net, end of period | 849,813 |
Core deposit intangibles |  |
Identifiable Intangible Assets |  |
Gross Carrying Amount | 77,373 | 69,403
Accumulated Amortization | (62,556) | (60,316)
Net Carrying Amount | 14,817 | 9,087
Estimated aggregate amortization expense for each of five succeeding fiscal years |  |
Net Carrying Amount | 14,817 | 9,087
Other intangibles |  |
Identifiable Intangible Assets |  |
Gross Carrying Amount | 119,263 | 116,799
Accumulated Amortization | (66,002) | (60,660)
Net Carrying Amount | 53,261 | 56,139
Estimated aggregate amortization expense for each of five succeeding fiscal years |  |
Net Carrying Amount | $ 53,261 | $ 56,139

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