BORROWINGS - Schedule of subordinated debt (Details) - Subordinated Notes	Sep. 30, 2023 USD ($)
Subordinated Notes Issued March 2020
BORROWINGS
Interest bearing rate (as a percent)	5.125%
Basis points	0.0450
Carrying Value	$ 8,000,000
Initial Debt Issuance Costs	120,000
Remaining Net Balance	$ 7,964,000
Subordinated Notes Issued November 2020
BORROWINGS
Interest bearing rate (as a percent)	4.25%
Basis points	0.0402
Carrying Value	$ 10,000,000
Initial Debt Issuance Costs	162,000
Remaining Net Balance	$ 9,904,000
Subordinated Notes Issued August 2021
BORROWINGS
Interest bearing rate (as a percent)	3.25%
Basis points	0.0258
Carrying Value	$ 15,000,000
Initial Debt Issuance Costs	242,000
Remaining Net Balance	$ 14,837,000
Subordinated Notes Issued December 2022
BORROWINGS
Interest bearing rate (as a percent)	7.00%
Basis points	0.0328
Carrying Value	$ 20,000,000
Initial Debt Issuance Costs	506,000
Remaining Net Balance	$ 19,574,000