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LOANS AND ALLOWANCE FOR CREDIT LOSSES - Narrative (Details) $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2022 USD ($) contract	Dec. 31, 2022 USD ($) troubled_debt_restructuring	Mar. 31, 2023 USD ($)
Accounts, Notes, Loans and Financing Receivable [Line Items]
Unfunded commitments		$ 17,939	$ 22,679
Outstanding commitments			0
Remaining borrowing capacity			71
Impaired financing receivable, recorded investment	$ 33,741	26,823
Financing receivable, troubled debt restructuring		$ 7,788
Number of troubled debt restructuring | troubled_debt_restructuring		1
Investment in troubled debt restructuring		$ 15
Number of Contracts	9	1
Total amount of TDR commitments meeting TDR criteria		$ 26
Financing receivable, modifications, available line of credit loan, amount		484
Number of Modifications | contract	0
Purchased Credit Impaired Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, troubled debt restructuring		6,904
TDR Loan
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, troubled debt restructuring		7,018
7
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, troubled debt restructuring		12,901
Performing loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, troubled debt restructuring		5,171
Acquired Loans | Purchased Credit Impaired Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, troubled debt restructuring		7,000
Unfunded commitment
Accounts, Notes, Loans and Financing Receivable [Line Items]
Unfunded commitments		0	1,530
Commercial/Agricultural Real Estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Unfunded commitments		14,085	$ 18,496
Impaired financing receivable, recorded investment	$ 20,321	$ 16,849
Number of Contracts | contract	4
Commercial/Agricultural Real Estate | Agricultural real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loan-to-value ratio (as a percent)			75.00%

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