LOANS RECEIVABLE AND ALLOWANCE FOR CREDIT LOSSES - Loans - Allowance by Loan Segment (Details) - USD ($)	9 Months Ended		12 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Dec. 31, 2022
Financing Receivable, Allowance for Credit Losses
Balance, beginning of year	$ 2,162,000	$ 2,470,000	$ 2,470,000
Charged off	(136,000)	(151,000)	(392,000)
Recoveries	75,000		196,000
(Release) provision for credit losses	(7,000)		(112,000)
Balance, end of year	2,094,000		2,162,000
Individually evaluated for impairment:
Individually evaluated for impairment, Balance in allowance	171,000		79,000
Individually evaluated for impairment, Related loan balance	331,000		334,000
Collectively evaluated for impairment:
Collectively evaluated for impairment, Balance in allowance	1,923,000		2,083,000
Collectively evaluated for impairment, Related loan balance	174,465,000		186,106,000
Real Estate Loan
Individually evaluated for impairment:
Individually evaluated for impairment, Balance in allowance	22,000		20,000
Commercial and Industrial
Individually evaluated for impairment:
Individually evaluated for impairment, Balance in allowance	149,000		59,000
Construction and Land | Real Estate Loan
Financing Receivable, Allowance for Credit Losses
Balance, beginning of year	44,000	5,000	5,000
(Release) provision for credit losses	(9,000)		39,000
Balance, end of year	35,000		44,000
Collectively evaluated for impairment:
Collectively evaluated for impairment, Balance in allowance	35,000		44,000
Collectively evaluated for impairment, Related loan balance	4,145,000		4,499,000
Farmland | Real Estate Loan
Financing Receivable, Allowance for Credit Losses
Balance, beginning of year	20,000	11,000	11,000
(Release) provision for credit losses	(2,000)		9,000
Balance, end of year	18,000		20,000
Collectively evaluated for impairment:
Collectively evaluated for impairment, Balance in allowance	18,000		20,000
Collectively evaluated for impairment, Related loan balance	327,000		333,000
Single-family Residential | Real Estate Loan
Financing Receivable, Allowance for Credit Losses
Balance, beginning of year	1,230,000	1,357,000	1,357,000
Recoveries	3,000
(Release) provision for credit losses	4,000		(127,000)
Balance, end of year	1,237,000		1,230,000
Individually evaluated for impairment:
Individually evaluated for impairment, Balance in allowance	22,000		20,000
Individually evaluated for impairment, Related loan balance	31,000		34,000
Collectively evaluated for impairment:
Collectively evaluated for impairment, Balance in allowance	1,215,000		1,210,000
Collectively evaluated for impairment, Related loan balance	82,967,000		80,217,000
Multi-family | Real Estate Loan
Financing Receivable, Allowance for Credit Losses
Balance, beginning of year	103,000	105,000	105,000
(Release) provision for credit losses	(6,000)		(2,000)
Balance, end of year	97,000		103,000
Collectively evaluated for impairment:
Collectively evaluated for impairment, Balance in allowance	97,000		103,000
Collectively evaluated for impairment, Related loan balance	5,201,000		5,304,000
Commercial and Industrial | Commercial and Industrial
Financing Receivable, Allowance for Credit Losses
Balance, beginning of year	174,000	115,000	115,000
Charged off			(200,000)
(Release) provision for credit losses	87,000		259,000
Balance, end of year	261,000		174,000
Individually evaluated for impairment:
Individually evaluated for impairment, Balance in allowance	149,000		59,000
Individually evaluated for impairment, Related loan balance			300,000
Collectively evaluated for impairment:
Collectively evaluated for impairment, Balance in allowance	261,000		115,000
Collectively evaluated for impairment, Related loan balance	10,032,000		8,690,000
Commercial | Real Estate Loan
Financing Receivable, Allowance for Credit Losses
Balance, beginning of year	221,000	278,000	278,000
(Release) provision for credit losses	(18,000)		(57,000)
Balance, end of year	203,000		221,000
Individually evaluated for impairment:
Individually evaluated for impairment, Balance in allowance	149,000
Individually evaluated for impairment, Related loan balance	300,000
Collectively evaluated for impairment:
Collectively evaluated for impairment, Balance in allowance	53,000		221,000
Collectively evaluated for impairment, Related loan balance	41,061,000		42,936,000
SBA Guaranty | Commercial and Industrial
Financing Receivable, Allowance for Credit Losses
Balance, beginning of year	22,000	30,000	30,000
Charged off			(9,000)
(Release) provision for credit losses			1,000
Balance, end of year	22,000		22,000
Collectively evaluated for impairment:
Collectively evaluated for impairment, Balance in allowance	22,000		22,000
Collectively evaluated for impairment, Related loan balance	5,970,000		6,158,000
Consumer
Financing Receivable, Allowance for Credit Losses
Charged off	(79,000)
Consumer | Consumer Loans
Financing Receivable, Allowance for Credit Losses
Balance, beginning of year	23,000	36,000	36,000
Charged off			(14,000)
Recoveries	0		8,000
(Release) provision for credit losses	1,000		(7,000)
Balance, end of year	24,000		23,000
Collectively evaluated for impairment:
Collectively evaluated for impairment, Balance in allowance	24,000		23,000
Collectively evaluated for impairment, Related loan balance	1,257,000		1,521,000
Automobile
Financing Receivable, Allowance for Credit Losses
Charged off	(57,000)
Automobile | Consumer Loans
Financing Receivable, Allowance for Credit Losses
Balance, beginning of year	325,000	$ 533,000	533,000
Charged off	(136,000)		(169,000)
Recoveries	72,000		188,000
(Release) provision for credit losses	(64,000)		(227,000)
Balance, end of year	197,000		325,000
Collectively evaluated for impairment:
Collectively evaluated for impairment, Balance in allowance	197,000		325,000
Collectively evaluated for impairment, Related loan balance	$ 23,505,000		$ 36,448,000