GOODWILL AND OTHER INTANGIBLE ASSETS - Schedule of Other Intangible Asset Disclosures (Details) - USD ($) $ in Thousands	Dec. 31, 2024	Dec. 31, 2023
Goodwill and other intangibles assets
Intangible assets, gross	$ 138,549	$ 132,203
Accumulated amortization	106,269	96,212
Total estimated amortization expense	32,280	35,991
Core deposit intangible
Goodwill and other intangibles assets
Intangible assets, gross	105,411	99,065
Accumulated amortization	78,831	71,092
Total estimated amortization expense	26,580	27,973
Customer relationship intangible
Goodwill and other intangibles assets
Intangible assets, gross	33,138	33,138
Accumulated amortization	27,438	25,120
Total estimated amortization expense	$ 5,700	$ 8,018