GOODWILL AND CORE DEPOSIT INTANGIBLE ASSETS (Carrying amount of intangible assets (including accumulated amortization) (Details) - USD ($) $ in Thousands	Sep. 30, 2024	Dec. 31, 2023
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 101,185	$ 101,185
Accumulated Amortization	87,028	82,770
Net Carrying Amount	14,157	18,415
Core deposit intangibles
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	101,185	101,185
Accumulated Amortization	87,028	82,770
Net Carrying Amount	$ 14,157	$ 18,415