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GOODWILL AND IDENTIFIABLE INTANGIBLE ASSETS (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2023 | Dec. 31, 2022
Identifiable Intangible Assets |  |
Gross Carrying Amount | $ 203,292 | $ 197,186
Accumulated Amortization | (150,701) | (136,190)
Net Carrying Amount | 52,591 | 60,996
Estimated aggregate amortization expense for each of five succeeding fiscal years |  |
2024 | 12,856 |
2025 | 10,969 |
2026 | 9,662 |
2027 | 4,079 |
2026 | 3,011 |
Thereafter | 12,014 |
Net Carrying Amount | 52,591 | 60,996
Components of goodwill |  |
Goodwill, beginning of period | 841,841 | 799,109
Goodwill, net, beginning of period | 841,841 | 799,109
Goodwill Additions | 3,555 | 42,732
Goodwill, end of period | 845,396 | 841,841
Goodwill, net, end of period | 845,396 | 841,841
Total principal balance of loans | 532,900 | 583,100
Total custodial escrow balances maintained in connection with loans | 10,200 | 10,500
Impairment loss for goodwill |  | 0
Core deposit intangibles |  |
Identifiable Intangible Assets |  |
Gross Carrying Amount | 77,373 | 77,373
Accumulated Amortization | (69,214) | (65,069)
Net Carrying Amount | 8,159 | 12,304
Estimated aggregate amortization expense for each of five succeeding fiscal years |  |
Net Carrying Amount | 8,159 | 12,304
Other intangibles |  |
Identifiable Intangible Assets |  |
Gross Carrying Amount | 125,919 | 119,813
Accumulated Amortization | (81,487) | (71,121)
Net Carrying Amount | 44,432 | 48,692
Estimated aggregate amortization expense for each of five succeeding fiscal years |  |
Net Carrying Amount | $ 44,432 | $ 48,692

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