OTHER ASSETS - Schedule of Other Assets (Details) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Other Assets [Abstract]
Capitalized servicing rights	$ 12,095	$ 13,047	$ 16,022	$ 16,348
Accrued interest receivable	53,096	46,868
Accrued federal and state tax receivable	33,564	34,386
Right-of-use assets	47,348	46,411
Derivative assets	45,668	54,241
Deferred tax asset	110,068	118,331
Other	39,918	35,651
Total other assets	$ 341,757	$ 348,935