LOANS RECEIVABLE AND ALLOWANCE FOR CREDIT LOSSES - Allowance for Credit Losses (Details)	9 Months Ended
	Sep. 30, 2022 USD ($) borrower	Sep. 30, 2021 USD ($) borrower
Financing Receivable, Allowance For Credit Losses [Line Items]
Average loans	$ 197,199,000	$ 239,492,000
Net charge-offs to average loans (annualized)	0.00%	(0.19%)
Number of borrowers | borrower	14	20
Loans charged off	$ 151,000	$ 193,000
Outstanding commitments	30,500,000	30,600,000
Unfunded commitments
Beginning balance	371,000	33,000
Reduction of unfunded reserve	(76,000)	(34,000)
Provisions charged to operations	174,000
Ending balance	$ 469,000	456,000
ASU 2016-13
Unfunded commitments
Impact of ASC 326 adoption		$ 457,000