ALLOWANCE FOR CREDIT LOSSES - Schedule of Allowance for Credit Losses (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023	Dec. 31, 2023
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss [Roll Forward]
Beginning Balance	$ 126,861	$ 111,198	$ 122,566	$ 109,483	$ 109,483
Charge-offs	(32,137)	(3,964)	(43,618)		(19,614)
Charge-offs				(15,728)
Recoveries	3,202	302	5,573	3,768
Provision (benefit)	8,871	2,672	22,276	12,685
Ending Balance	106,797	110,208	106,797	110,208	122,566
Off-Balance Sheet, Credit Loss, Liability [Roll Forward]
Beginning balance	13,057	18,636	16,468	20,196	20,196
Provision (benefit)	(2,595)	(1,156)	(6,006)	(2,716)
Ending balance	10,462	17,480	10,462	17,480	16,468
Agricultural and Agricultural Real Estate
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss [Roll Forward]
Beginning Balance	8,905	3,511	4,292	2,634	2,634
Charge-offs	(9,302)	(10)	(10,177)		(5,319)
Charge-offs				(5,319)
Recoveries	0	0	9	11
Provision (benefit)	4,200	903	9,679	7,078
Ending Balance	3,803	4,404	3,803	4,404	4,292
Residential Real Estate
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss [Roll Forward]
Beginning Balance	5,036	7,644	5,845	7,711	7,711
Charge-offs	(182)	0	(182)		(183)
Charge-offs				(59)
Recoveries	0	0	105	19
Provision (benefit)	501	(537)	(413)	(564)
Ending Balance	5,355	7,107	5,355	7,107	5,845
Consumer
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss [Roll Forward]
Beginning Balance	7,499	9,716	8,572	9,582	9,582
Charge-offs	(622)	(2,003)	(2,620)		(3,677)
Charge-offs				(3,214)
Recoveries	2,756	127	4,281	1,592
Provision (benefit)	(1,563)	1,624	(2,163)	1,504
Ending Balance	8,070	9,464	8,070	9,464	8,572
Commercial and Industrial | Commercial and industrial
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss [Roll Forward]
Beginning Balance	44,800	29,396	40,679	29,071	29,071
Charge-offs	(22,006)	(1,344)	(30,217)		(8,622)
Charge-offs				(6,481)
Recoveries	440	167	1,172	2,007
Provision (benefit)	185	77	11,785	3,699
Ending Balance	23,419	28,296	23,419	28,296	40,679
Owner occupied commercial real estate | Commercial and industrial
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss [Roll Forward]
Beginning Balance	14,714	14,709	17,156	13,948	13,948
Charge-offs	(25)	0	(422)		(870)
Charge-offs				(19)
Recoveries	1	1	1	113
Provision (benefit)	(1,439)	(36)	(3,484)	632
Ending Balance	13,251	14,674	13,251	14,674	17,156
Non-owner occupied commercial real estate | Commercial and industrial
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss [Roll Forward]
Beginning Balance	13,697	17,976	17,249	16,539	16,539
Charge-offs	0	(607)	0		(627)
Charge-offs				(636)
Recoveries	0	0	0	0
Provision (benefit)	3,722	(85)	170	1,381
Ending Balance	17,419	17,284	17,419	17,284	17,249
Real Estate Construction | Commercial and industrial
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss [Roll Forward]
Beginning Balance	32,210	28,246	28,773	29,998	29,998
Charge-offs	0	0	0		(316)
Charge-offs				0
Recoveries	5	7	5	26
Provision (benefit)	3,265	726	6,702	(1,045)
Ending Balance	$ 35,480	$ 28,979	$ 35,480	$ 28,979	$ 28,773