ALLOWANCE FOR CREDIT LOSSES AND CREDIT QUALITY INFORMATION - Narrative (Details)	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 30, 2024 USD ($)	Jun. 30, 2023 USD ($)	Jun. 30, 2024 USD ($) loan	Jun. 30, 2023 USD ($)	Dec. 31, 2023 USD ($) loan
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loan workout and other credit costs	$ (1,278,000)	$ 536,000	$ (207,000)	$ 481,000
Various Modifications
Accounts, Notes, Loans and Financing Receivable [Line Items]
Unused commitments to extend credit	31,800,000		31,800,000		$ 18,400,000
Loans Modified
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans modified with subsequent default	0	900,000	$ 3,931,000	900,000
Residential
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of loans in the process of foreclosure | loan			34		31
Total loans outstanding			$ 5,400,000		$ 3,200,000
Commercial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of loans in the process of foreclosure | loan			14		9
Total loans outstanding			$ 3,500,000		$ 1,100,000
Residential and Consumer Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loan workout and other credit costs	$ 300,000	$ 200,000	$ (100,000)	$ 300,000
Impairment loans, charge off period			90 days