LOANS AND RELATED ALLOWANCE FOR CREDIT LOSSES - Recorded investments in loans and the allowance for loan losses (Details) - USD ($) $ in Thousands	Mar. 31, 2023	Dec. 31, 2022	Mar. 31, 2022	Dec. 31, 2021
LOANS AND THE ALLOWANCE FOR LOAN LOSSES
Loans, before allowance for credit losses	$ 3,195,540	$ 2,620,253
Allowance for credit loss	38,776	25,333	$ 24,508	$ 23,936
Loans Collectively Evaluated For Impairment [Member]
LOANS AND THE ALLOWANCE FOR LOAN LOSSES
Loans, before allowance for credit losses	3,145,279	2,527,562
Allowance for credit loss	32,653	18,984
Loans Individually Evaluated For Impairment [Member]
LOANS AND THE ALLOWANCE FOR LOAN LOSSES
Loans, before allowance for credit losses	50,261	71,715
Allowance for credit loss	6,123	6,320
Loans acquired with deteriorated credit quality
LOANS AND THE ALLOWANCE FOR LOAN LOSSES
Loans, before allowance for credit losses		20,976
Allowance for credit loss		29
Commercial and industrial
LOANS AND THE ALLOWANCE FOR LOAN LOSSES
Loans, before allowance for credit losses	333,013	266,757
Allowance for credit loss	2,932	3,279	2,491	2,440
Commercial and industrial | Loans Collectively Evaluated For Impairment [Member]
LOANS AND THE ALLOWANCE FOR LOAN LOSSES
Loans, before allowance for credit losses	332,878	261,833
Allowance for credit loss	2,932	3,121
Commercial and industrial | Loans Individually Evaluated For Impairment [Member]
LOANS AND THE ALLOWANCE FOR LOAN LOSSES
Loans, before allowance for credit losses	135	4,818
Allowance for credit loss		158
Commercial and industrial | Loans acquired with deteriorated credit quality
LOANS AND THE ALLOWANCE FOR LOAN LOSSES
Loans, before allowance for credit losses		106
Agricultural and farmland
LOANS AND THE ALLOWANCE FOR LOAN LOSSES
Loans, before allowance for credit losses	243,357	237,746
Allowance for credit loss	2,674	796	842	845
Agricultural and farmland | Loans Collectively Evaluated For Impairment [Member]
LOANS AND THE ALLOWANCE FOR LOAN LOSSES
Loans, before allowance for credit losses	243,357	233,118
Allowance for credit loss	2,674	796
Agricultural and farmland | Loans Individually Evaluated For Impairment [Member]
LOANS AND THE ALLOWANCE FOR LOAN LOSSES
Loans, before allowance for credit losses		4,033
Agricultural and farmland | Loans acquired with deteriorated credit quality
LOANS AND THE ALLOWANCE FOR LOAN LOSSES
Loans, before allowance for credit losses		595
Commercial real estate - owner occupied
LOANS AND THE ALLOWANCE FOR LOAN LOSSES
Loans, before allowance for credit losses	317,103	218,503
Allowance for credit loss	2,535	1,193	1,511	1,840
Commercial real estate - owner occupied | Loans Collectively Evaluated For Impairment [Member]
LOANS AND THE ALLOWANCE FOR LOAN LOSSES
Loans, before allowance for credit losses	316,652	203,558
Allowance for credit loss	2,524	1,008
Commercial real estate - owner occupied | Loans Individually Evaluated For Impairment [Member]
LOANS AND THE ALLOWANCE FOR LOAN LOSSES
Loans, before allowance for credit losses	451	11,366
Allowance for credit loss	11	168
Commercial real estate - owner occupied | Loans acquired with deteriorated credit quality
LOANS AND THE ALLOWANCE FOR LOAN LOSSES
Loans, before allowance for credit losses		3,579
Allowance for credit loss		17
Commercial real estate - non-owner occupied
LOANS AND THE ALLOWANCE FOR LOAN LOSSES
Loans, before allowance for credit losses	854,024	713,202
Allowance for credit loss	7,840	6,721	7,014	8,145
Commercial real estate - non-owner occupied | Loans Collectively Evaluated For Impairment [Member]
LOANS AND THE ALLOWANCE FOR LOAN LOSSES
Loans, before allowance for credit losses	827,220	671,663
Allowance for credit loss	5,747	4,332
Commercial real estate - non-owner occupied | Loans Individually Evaluated For Impairment [Member]
LOANS AND THE ALLOWANCE FOR LOAN LOSSES
Loans, before allowance for credit losses	26,804	30,509
Allowance for credit loss	2,093	2,388
Commercial real estate - non-owner occupied | Loans acquired with deteriorated credit quality
LOANS AND THE ALLOWANCE FOR LOAN LOSSES
Loans, before allowance for credit losses		11,030
Allowance for credit loss		1
Multi-family
LOANS AND THE ALLOWANCE FOR LOAN LOSSES
Loans, before allowance for credit losses	362,672	287,865
Allowance for credit loss	2,151	1,472	1,354	1,263
Multi-family | Loans Collectively Evaluated For Impairment [Member]
LOANS AND THE ALLOWANCE FOR LOAN LOSSES
Loans, before allowance for credit losses	361,636	287,298
Allowance for credit loss	2,151	1,470
Multi-family | Loans Individually Evaluated For Impairment [Member]
LOANS AND THE ALLOWANCE FOR LOAN LOSSES
Loans, before allowance for credit losses	1,036
Multi-family | Loans acquired with deteriorated credit quality
LOANS AND THE ALLOWANCE FOR LOAN LOSSES
Loans, before allowance for credit losses		567
Allowance for credit loss		2
Construction and land development
LOANS AND THE ALLOWANCE FOR LOAN LOSSES
Loans, before allowance for credit losses	389,142	360,824
Allowance for credit loss	7,574	4,223	4,493	4,914
Construction and land development | Loans Collectively Evaluated For Impairment [Member]
LOANS AND THE ALLOWANCE FOR LOAN LOSSES
Loans, before allowance for credit losses	388,904	359,892
Allowance for credit loss	7,574	4,221
Construction and land development | Loans Individually Evaluated For Impairment [Member]
LOANS AND THE ALLOWANCE FOR LOAN LOSSES
Loans, before allowance for credit losses	238	82
Construction and land development | Loans acquired with deteriorated credit quality
LOANS AND THE ALLOWANCE FOR LOAN LOSSES
Loans, before allowance for credit losses		850
Allowance for credit loss		2
One-to-four family residential
LOANS AND THE ALLOWANCE FOR LOAN LOSSES
Loans, before allowance for credit losses	482,732	338,253
Allowance for credit loss	4,165	1,759	1,583	1,311
One-to-four family residential | Loans Collectively Evaluated For Impairment [Member]
LOANS AND THE ALLOWANCE FOR LOAN LOSSES
Loans, before allowance for credit losses	477,893	325,621
Allowance for credit loss	3,718	1,709
One-to-four family residential | Loans Individually Evaluated For Impairment [Member]
LOANS AND THE ALLOWANCE FOR LOAN LOSSES
Loans, before allowance for credit losses	4,839	8,399
Allowance for credit loss	447	44
One-to-four family residential | Loans acquired with deteriorated credit quality
LOANS AND THE ALLOWANCE FOR LOAN LOSSES
Loans, before allowance for credit losses		4,233
Allowance for credit loss		6
Municipal, consumer, and other
LOANS AND THE ALLOWANCE FOR LOAN LOSSES
Loans, before allowance for credit losses	213,497	197,103
Allowance for credit loss	8,905	5,890	$ 5,220	$ 3,178
Municipal, consumer, and other | Loans Collectively Evaluated For Impairment [Member]
LOANS AND THE ALLOWANCE FOR LOAN LOSSES
Loans, before allowance for credit losses	196,739	184,579
Allowance for credit loss	5,333	2,327
Municipal, consumer, and other | Loans Individually Evaluated For Impairment [Member]
LOANS AND THE ALLOWANCE FOR LOAN LOSSES
Loans, before allowance for credit losses	16,758	12,508
Allowance for credit loss	$ 3,572	3,562
Municipal, consumer, and other | Loans acquired with deteriorated credit quality
LOANS AND THE ALLOWANCE FOR LOAN LOSSES
Loans, before allowance for credit losses		16
Allowance for credit loss		$ 1