ACCOUNTING POLICIES - Impact of ASC 326 on the allowance for credit losses (Details) - USD ($) $ in Thousands		6 Months Ended
	Jan. 01, 2023	Jun. 30, 2023	Mar. 31, 2023	Dec. 31, 2022	Jun. 30, 2022	Mar. 31, 2022	Dec. 31, 2021
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Retained earnings		$ 241,777		$ 232,004
Allowance for credit loss				25,333	$ 24,734	$ 24,508	$ 23,936
Allowance for credit loss		37,814	$ 38,776
PCD allowance established in acquisition		1,247
Commercial and industrial
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Allowance for credit loss				3,279	2,981	2,491	2,440
Allowance for credit loss		3,735	2,932
PCD allowance established in acquisition		69
Commercial real estate - owner occupied
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Allowance for credit loss				1,193	1,224	1,511	1,840
Allowance for credit loss		2,362	2,535
PCD allowance established in acquisition		127
Commercial real estate - non-owner occupied
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Allowance for credit loss				6,721	6,611	7,014	8,145
Allowance for credit loss		7,538	7,840
PCD allowance established in acquisition		239
Construction and land development
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Allowance for credit loss				4,223	4,059	4,493	4,914
Allowance for credit loss		5,834	7,574
PCD allowance established in acquisition		240
Multi-family
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Allowance for credit loss				1,472	1,375	1,354	1,263
Allowance for credit loss		2,603	2,151
PCD allowance established in acquisition		68
One-to-four family residential
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Allowance for credit loss				1,759	1,696	1,583	1,311
Allowance for credit loss		4,077	4,165
PCD allowance established in acquisition		492
Agricultural and farmland
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Allowance for credit loss				796	924	842	845
Allowance for credit loss		2,607	2,674
PCD allowance established in acquisition		5
Municipal, consumer, and other
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Allowance for credit loss				$ 5,890	$ 5,864	$ 5,220	$ 3,178
Allowance for credit loss		9,058	$ 8,905
PCD allowance established in acquisition		7
Unfunded Loan Commitment
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Allowance for credit loss		4,100
Cumulative Effect, Period of Adoption, Adjustment [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Retained earnings	$ (6,900)
Allowance for credit loss	6,983
Allowance for credit loss		6,983
PCD allowance established in acquisition	200
Cumulative Effect, Period of Adoption, Adjustment [Member] | Commercial and industrial
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Allowance for credit loss	(822)
Allowance for credit loss		(822)
Cumulative Effect, Period of Adoption, Adjustment [Member] | Commercial real estate - owner occupied
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Allowance for credit loss	587
Allowance for credit loss		587
Cumulative Effect, Period of Adoption, Adjustment [Member] | Commercial real estate - non-owner occupied
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Allowance for credit loss	501
Allowance for credit loss		501
Cumulative Effect, Period of Adoption, Adjustment [Member] | Construction and land development
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Allowance for credit loss	1,969
Allowance for credit loss		1,969
Cumulative Effect, Period of Adoption, Adjustment [Member] | Multi-family
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Allowance for credit loss	85
Allowance for credit loss		85
Cumulative Effect, Period of Adoption, Adjustment [Member] | One-to-four family residential
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Allowance for credit loss	797
Allowance for credit loss		797
Cumulative Effect, Period of Adoption, Adjustment [Member] | Agricultural and farmland
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Allowance for credit loss	1,567
Allowance for credit loss		1,567
Cumulative Effect, Period of Adoption, Adjustment [Member] | Municipal, consumer, and other
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Allowance for credit loss	2,299
Allowance for credit loss		$ 2,299
Cumulative Effect, Period of Adoption, Adjustment [Member] | Unfunded Loan Commitment
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Allowance for credit loss	2,899
Cumulative Effect, Period of Adoption, Adjusted Balance [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Allowance for credit loss	32,316
Cumulative Effect, Period of Adoption, Adjusted Balance [Member] | Commercial and industrial
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Allowance for credit loss	2,457
Cumulative Effect, Period of Adoption, Adjusted Balance [Member] | Commercial real estate - owner occupied
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Allowance for credit loss	1,780
Cumulative Effect, Period of Adoption, Adjusted Balance [Member] | Commercial real estate - non-owner occupied
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Allowance for credit loss	7,222
Cumulative Effect, Period of Adoption, Adjusted Balance [Member] | Construction and land development
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Allowance for credit loss	6,192
Cumulative Effect, Period of Adoption, Adjusted Balance [Member] | Multi-family
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Allowance for credit loss	1,557
Cumulative Effect, Period of Adoption, Adjusted Balance [Member] | One-to-four family residential
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Allowance for credit loss	2,556
Cumulative Effect, Period of Adoption, Adjusted Balance [Member] | Agricultural and farmland
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Allowance for credit loss	2,363
Cumulative Effect, Period of Adoption, Adjusted Balance [Member] | Municipal, consumer, and other
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Allowance for credit loss	8,189
Cumulative Effect, Period of Adoption, Adjusted Balance [Member] | Unfunded Loan Commitment
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Allowance for credit loss	$ 2,899