ALLOWANCE FOR CREDIT LOSSES (Allowance for Credit Losses by Loan Category) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Balance at beginning of year	$ 109,483	$ 110,088	$ 131,606
Charge-offs	19,614	18,296	8,743
Recoveries	7,262	7,055	4,931
Provision (Benefit)	25,435	10,636	(17,706)
Balance at end of year	122,566	109,483	110,088
Commercial and industrial | Commercial and industrial
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Balance at beginning of year	29,071	27,738
Charge-offs	8,622	6,964
Recoveries	5,069	4,951
Provision (Benefit)	15,161	3,346
Balance at end of year	40,679	29,071	27,738
Commercial and industrial | Owner occupied commercial real estate
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Balance at beginning of year	13,948	19,214
Charge-offs	870	129
Recoveries	113	112
Provision (Benefit)	3,965	(5,249)
Balance at end of year	17,156	13,948	19,214
Commercial and industrial | Non-owner occupied commercial real estate
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Balance at beginning of year	16,539	17,908
Charge-offs	627	193
Recoveries	268	60
Provision (Benefit)	1,069	(1,236)
Balance at end of year	17,249	16,539	17,908
Commercial and industrial | Real estate construction
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Balance at beginning of year	29,998	22,538
Charge-offs	316	35
Recoveries	26	13
Provision (Benefit)	(935)	7,482
Balance at end of year	28,773	29,998	22,538
Agricultural and agricultural real estate
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Balance at beginning of year	2,634	5,213
Charge-offs	5,319	3,217
Recoveries	11	653
Provision (Benefit)	6,966	(15)
Balance at end of year	4,292	2,634	5,213
Residential real estate
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Balance at beginning of year	7,711	8,427
Charge-offs	183	307
Recoveries	19	0
Provision (Benefit)	(1,702)	(409)
Balance at end of year	5,845	7,711	8,427
Consumer
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Balance at beginning of year	9,582	9,050
Charge-offs	3,677	7,451
Recoveries	1,756	1,266
Provision (Benefit)	911	6,717
Balance at end of year	$ 8,572	$ 9,582	$ 9,050