COMMITMENTS AND CONTINGENCIES - Significant Off-balance Sheet Commitments (Details) $ in Thousands	Sep. 30, 2021 USD ($)
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Total	$ 173,135
Commitments to originate loans: | Adjustable-rate
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Total	9,946
Commitments to originate loans: | Fixed-rate
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Total	20,673
Standby letters of credit
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Total	1,870
Undisbursed loan funds and unused lines of credit
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Total	$ 140,646