LOANS AND ALLOWANCE FOR CREDIT LOSSES - Schedule of Allowance for Credit Losses Activity (Details) - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Mar. 31, 2023	Mar. 31, 2022	Dec. 31, 2022
Allowance for credit losses:
Beginning balance	$ 31,974	$ 30,433	$ 30,433
Provision for (reversal of) for credit losses	0	(1,250)	2,150
Loans charged-off	(94)	(203)	(849)
Recoveries	73	116	240
Ending balance	31,953	29,096	31,974
Commercial and industrial
Allowance for credit losses:
Beginning balance	4,382	3,600	3,600
Provision for (reversal of) for credit losses	(239)	230	902
Loans charged-off	(3)	(119)	(192)
Recoveries	8	39	72
Ending balance	4,148	3,750	4,382
Construction and development
Allowance for credit losses:
Beginning balance	4,889	4,221	4,221
Provision for (reversal of) for credit losses	(25)	(323)	668
Loans charged-off		0	0
Recoveries	0	0	0
Ending balance	4,864	3,898	4,889
Commercial real estate
Allowance for credit losses:
Beginning balance	12,658	13,765	13,765
Provision for (reversal of) for credit losses	32	(1,569)	(1,108)
Loans charged-off	0	0	0
Recoveries	0	1	1
Ending balance	12,690	12,197	12,658
Farmland
Allowance for credit losses:
Beginning balance	2,008	1,698	1,698
Provision for (reversal of) for credit losses	78	302	310
Loans charged-off		0	0
Ending balance	2,086	2,000	2,008
1-4 family residential
Allowance for credit losses:
Beginning balance	6,617	5,818	5,818
Provision for (reversal of) for credit losses	24	(119)	769
Loans charged-off		0	0
Recoveries	0	30	30
Ending balance	6,641	5,729	6,617
Multi-family residential
Allowance for credit losses:
Beginning balance	490	396	396
Provision for (reversal of) for credit losses	(11)	60	94
Loans charged-off		0	0
Ending balance	479	456	490
Consumer
Allowance for credit losses:
Beginning balance	778	762	762
Provision for (reversal of) for credit losses	82	146	283
Loans charged-off	(7)	(17)	(322)
Recoveries	45	16	55
Ending balance	898	907	778
Agricultural
Allowance for credit losses:
Beginning balance	149	169	169
Provision for (reversal of) for credit losses	(4)	(13)	(20)
Loans charged-off	(3)	0	0
Recoveries	2	0	0
Ending balance	144	156	149
Overdrafts
Allowance for credit losses:
Beginning balance	3	4	4
Provision for (reversal of) for credit losses	63	36	252
Loans charged-off	(81)	(67)	(335)
Recoveries	18	30	82
Ending balance	$ 3	$ 3	$ 3