ALLOWANCE FOR CREDIT LOSSES (Allowance for Credit Losses by Loan Category) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Balance at beginning of year	$ 110,088	$ 131,606	$ 70,395
Charge-offs	18,296	8,743	32,722
Recoveries	7,055	4,931	3,804
Provision (Benefit)	10,636	(17,706)	65,745
Balance at end of year	109,483	110,088	131,606
Cumulative Effect, Period of Adoption, Adjusted Balance [Member]
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Balance at beginning of year	110,088	131,606	82,466
Charge-offs		8,743
Recoveries		4,931
Provision (Benefit)		(17,706)
Balance at end of year		110,088	131,606
Commercial and industrial | Commercial and industrial
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Balance at beginning of year	27,738	38,818
Balance at end of year	29,071	27,738	38,818
Commercial and industrial | Commercial and industrial | Cumulative Effect, Period of Adoption, Adjusted Balance [Member]
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Charge-offs	6,964	2,150
Recoveries	4,951	3,058
Provision (Benefit)	3,346	(11,988)
Commercial and industrial | Owner occupied commercial real estate
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Balance at beginning of year	19,214	20,001
Balance at end of year	13,948	19,214	20,001
Commercial and industrial | Owner occupied commercial real estate | Cumulative Effect, Period of Adoption, Adjusted Balance [Member]
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Charge-offs	129	296
Recoveries	112	152
Provision (Benefit)	(5,249)	(643)
Commercial and industrial | Non-owner occupied commercial real estate
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Balance at beginning of year	17,908	20,873
Balance at end of year	16,539	17,908	20,873
Commercial and industrial | Non-owner occupied commercial real estate | Cumulative Effect, Period of Adoption, Adjusted Balance [Member]
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Charge-offs	193	1,637
Recoveries	60	33
Provision (Benefit)	(1,236)	(1,361)
Commercial and industrial | Real estate construction
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Balance at beginning of year	22,538	20,080
Balance at end of year	29,998	22,538	20,080
Commercial and industrial | Real estate construction | Cumulative Effect, Period of Adoption, Adjusted Balance [Member]
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Charge-offs	35	10
Recoveries	13	10
Provision (Benefit)	7,482	2,458
Agricultural and agricultural real estate
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Balance at beginning of year	5,213	7,129
Balance at end of year	2,634	5,213	7,129
Agricultural and agricultural real estate | Cumulative Effect, Period of Adoption, Adjusted Balance [Member]
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Charge-offs	3,217	1,902
Recoveries	653	531
Provision (Benefit)	(15)	(545)
Residential real estate
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Balance at beginning of year	8,427	11,935
Balance at end of year	7,711	8,427	11,935
Residential real estate | Cumulative Effect, Period of Adoption, Adjusted Balance [Member]
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Charge-offs	307	181
Recoveries	0	13
Provision (Benefit)	(409)	(3,340)
Consumer
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Balance at beginning of year	9,050	12,770
Balance at end of year	9,582	9,050	$ 12,770
Consumer | Cumulative Effect, Period of Adoption, Adjusted Balance [Member]
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Charge-offs	7,451	2,567
Recoveries	1,266	1,134
Provision (Benefit)	$ 6,717	$ (2,287)