INCOME TAXES - Schedule of Tax Effects of Temporary Differences Related to Deferred Taxes Included in Other Liabilities (Details) - USD ($) $ in Thousands	Dec. 31, 2025	Dec. 31, 2024
Deferred tax assets:
Loans acquired	$ 1,241	$ 2,141
Allowance for credit losses	52,923	55,196
Valuation of foreclosed assets	31	374
Tax NOLs from acquisition	6,507	9,945
Deferred compensation payable	3,960	3,989
Accrued equity and other compensation	11,626	9,323
Acquired securities	7,010	7,504
Capitalized intangibles	145,126	0
Right-of-use lease liability	12,653	16,416
Unrealized loss on AFS securities	98,492	128,873
Allowance for unfunded commitments	6,094	6,069
Other	7,488	7,163
Gross deferred tax assets	353,151	246,993
Deferred tax liabilities:
Goodwill and other intangible amortization	(36,335)	(38,139)
Accumulated depreciation	(22,475)	(24,489)
Right-of-use lease asset	(12,175)	(15,920)
Unrealized gain on swaps	(14,437)	(25,174)
Deferred loan fees and costs	0	(2,075)
Other	(1,271)	(11,193)
Gross deferred tax liabilities	(86,693)	(116,990)
Net deferred tax asset	$ 266,458	$ 130,003