GOODWILL AND OTHER INTANGIBLE ASSETS - Schedule of Other Intangible Asset Disclosures (Details) - USD ($) $ in Thousands	Dec. 31, 2025	Dec. 31, 2024
Goodwill and other intangibles assets
Intangible assets, gross	$ 220,332	$ 138,549
Accumulated amortization	122,883	106,269
Total estimated amortization expense	97,449	32,280
Core deposit intangible
Goodwill and other intangibles assets
Intangible assets, gross	187,194	105,411
Accumulated amortization	93,558	78,831
Total estimated amortization expense	93,636	26,580
Customer relationship intangible
Goodwill and other intangibles assets
Intangible assets, gross	33,138	33,138
Accumulated amortization	29,325	27,438
Total estimated amortization expense	$ 3,813	$ 5,700