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LOANS AND RELATED ALLOWANCE FOR CREDIT LOSSES - Recorded investments in loans and the allowance for loan losses (Details) - USD ($) $ in Thousands	Sep. 30, 2024	Jun. 30, 2024	Dec. 31, 2023	Sep. 30, 2023	Jun. 30, 2023	Dec. 31, 2022
Loan balances:
Collectively evaluated for impairment	$ 3,338,363		$ 3,367,513
Amortized Cost	31,467		36,904
Total	3,369,830		3,404,417
Allowance for credit losses:
Collectively evaluated for impairment	37,743		35,829
Allowance for Credit Losses	3,223		4,219
Allowance for Credit Losses	40,966	$ 40,806	40,048	$ 38,863	$ 37,814	$ 25,333
Commercial and industrial
Loan balances:
Collectively evaluated for impairment	394,583		427,528
Amortized Cost	1,015		272
Total	395,598		427,800
Allowance for credit losses:
Collectively evaluated for impairment	4,840		4,960
Allowance for Credit Losses	194		20
Allowance for Credit Losses	5,034	4,761	4,980	4,249	3,735	3,279
Commercial real estate - owner occupied
Loan balances:
Collectively evaluated for impairment	288,838		295,672
Amortized Cost	0		170
Total	288,838		295,842
Allowance for credit losses:
Collectively evaluated for impairment	2,231		2,272
Allowance for Credit Losses	0		0
Allowance for Credit Losses	2,231	2,191	2,272	2,254	2,362	1,193
Commercial real estate - non-owner occupied
Loan balances:
Collectively evaluated for impairment	874,417		865,394
Amortized Cost	14,771		15,287
Total	889,188		880,681
Allowance for credit losses:
Collectively evaluated for impairment	9,004		6,693
Allowance for Credit Losses	543		1,021
Allowance for Credit Losses	9,547	9,816	7,714	7,630	7,538	6,721
Construction and land development
Loan balances:
Collectively evaluated for impairment	358,935		363,767
Amortized Cost	216		216
Total	359,151		363,983
Allowance for credit losses:
Collectively evaluated for impairment	6,578		5,998
Allowance for Credit Losses	0		0
Allowance for Credit Losses	6,578	6,155	5,998	6,882	5,834	4,223
Multi-family
Loan balances:
Collectively evaluated for impairment	432,712		417,608
Amortized Cost	0		315
Total	432,712		417,923
Allowance for credit losses:
Collectively evaluated for impairment	3,790		3,837
Allowance for Credit Losses	0		0
Allowance for Credit Losses	3,790	3,712	3,837	2,535	2,603	1,472
One-to-four family residential
Loan balances:
Collectively evaluated for impairment	466,918		486,049
Amortized Cost	5,122		5,459
Total	472,040		491,508
Allowance for credit losses:
Collectively evaluated for impairment	4,654		4,957
Allowance for Credit Losses	76		247
Allowance for Credit Losses	4,730	4,785	5,204	4,088	4,077	1,759
Agricultural and farmland
Loan balances:
Collectively evaluated for impairment	297,102		287,150
Amortized Cost	0		144
Total	297,102		287,294
Allowance for credit losses:
Collectively evaluated for impairment	1,287		975
Allowance for Credit Losses	0		0
Allowance for Credit Losses	1,287	1,059	975	2,272	2,607	796
Municipal, consumer, and other
Loan balances:
Collectively evaluated for impairment	224,858		224,345
Amortized Cost	10,343		15,041
Total	235,201		239,386
Allowance for credit losses:
Collectively evaluated for impairment	5,359		6,137
Allowance for Credit Losses	2,410		2,931
Allowance for Credit Losses	$ 7,769	$ 8,327	$ 9,068	$ 8,953	$ 9,058	$ 5,890