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LOANS RECEIVABLE AND ALLOWANCE FOR CREDIT LOSSES - Current, Past Due, and Non-Accrual Loans by Categories of loans and Restructured Loans (Details) - USD ($)	Mar. 31, 2024	Dec. 31, 2023	Mar. 31, 2023	Dec. 31, 2022
Loans and Allowance for Credit Losses - Loans
Financing Receivable, Recorded Investment, Current	$ 177,950,000	$ 176,307,000
Non-accrual	371,000	527,000	$ 468,000	$ 488,000
Allowance for loan losses	2,035,000	2,157,000	2,157,000	2,162,000
Total	177,950,000	176,307,000	176,307,000
Specific Reserves	21,000	200,000
Current
Loans and Allowance for Credit Losses - Loans
Financing Receivable, Recorded Investment, Current	176,652,000	174,826,000
30 To 89 Days Past Due
Loans and Allowance for Credit Losses - Loans
Financing Receivable, Recorded Investment, Current	927,000	954,000
Real Estate Loan
Loans and Allowance for Credit Losses - Loans
Non-accrual	280,000	145,000
Total	136,710,000	136,230,000	136,230,000
Specific Reserves	21,000	21,000
Real Estate Loan \| Current
Loans and Allowance for Credit Losses - Loans
Financing Receivable, Recorded Investment, Current	135,791,000	135,576,000
Real Estate Loan \| 30 To 89 Days Past Due
Loans and Allowance for Credit Losses - Loans
Financing Receivable, Recorded Investment, Current	639,000	509,000
Real Estate Loan \| Construction and Land
Loans and Allowance for Credit Losses - Loans
Financing Receivable, Recorded Investment, Current	6,106,000	4,636,000
Allowance for loan losses	37,000	31,000		44,000
Total	6,106,000	4,636,000	4,636,000
Real Estate Loan \| Construction and Land \| Current
Loans and Allowance for Credit Losses - Loans
Financing Receivable, Recorded Investment, Current	6,106,000	4,636,000
Real Estate Loan \| Farmland
Loans and Allowance for Credit Losses - Loans
Financing Receivable, Recorded Investment, Current	322,000	325,000
Allowance for loan losses	17,000	18,000		20,000
Total	322,000	325,000	325,000
Real Estate Loan \| Farmland \| Current
Loans and Allowance for Credit Losses - Loans
Financing Receivable, Recorded Investment, Current	322,000	325,000
Real Estate Loan \| Single-family Residential
Loans and Allowance for Credit Losses - Loans
Financing Receivable, Recorded Investment, Current	86,068,000	86,887,000
Non-accrual	139,000	145,000	100,000	104,000
Allowance for loan losses	1,305,000	1,290,000		1,230,000
Total	86,068,000	86,887,000	86,887,000
Specific Reserves	21,000	21,000
Real Estate Loan \| Single-family Residential \| Current
Loans and Allowance for Credit Losses - Loans
Financing Receivable, Recorded Investment, Current	85,290,000	86,233,000
Real Estate Loan \| Single-family Residential \| 30 To 89 Days Past Due
Loans and Allowance for Credit Losses - Loans
Financing Receivable, Recorded Investment, Current	639,000	509,000
Real Estate Loan \| Multi-family
Loans and Allowance for Credit Losses - Loans
Financing Receivable, Recorded Investment, Current	5,130,000	5,165,000
Allowance for loan losses	95,000	96,000		103,000
Total	5,130,000	5,165,000	5,165,000
Real Estate Loan \| Multi-family \| Current
Loans and Allowance for Credit Losses - Loans
Financing Receivable, Recorded Investment, Current	5,130,000	5,165,000
Real Estate Loan \| Commercial
Loans and Allowance for Credit Losses - Loans
Financing Receivable, Recorded Investment, Current	39,084,000	39,217,000
Non-accrual	141,000
Allowance for loan losses	196,000	190,000		221,000
Total	39,084,000	39,217,000	39,217,000
Real Estate Loan \| Commercial \| Current
Loans and Allowance for Credit Losses - Loans
Financing Receivable, Recorded Investment, Current	38,943,000	39,217,000
Commercial and Industrial
Loans and Allowance for Credit Losses - Loans
Non-accrual		299,000
Total	19,154,000	16,774,000	16,774,000
Specific Reserves		179,000
Commercial and Industrial \| Current
Loans and Allowance for Credit Losses - Loans
Financing Receivable, Recorded Investment, Current	19,154,000	16,475,000
Commercial and Industrial \| Commercial and Industrial
Loans and Allowance for Credit Losses - Loans
Financing Receivable, Recorded Investment, Current	13,282,000	10,850,000
Non-accrual		299,000	296,000	299,000
Allowance for loan losses	159,000	304,000		174,000
Total	13,282,000	10,850,000	10,850,000
Specific Reserves		179,000
Commercial and Industrial \| Commercial and Industrial \| Current
Loans and Allowance for Credit Losses - Loans
Financing Receivable, Recorded Investment, Current	13,282,000	10,551,000
Commercial and Industrial \| SBA guaranty
Loans and Allowance for Credit Losses - Loans
Financing Receivable, Recorded Investment, Current	5,872,000	5,924,000
Allowance for loan losses	21,000	21,000		22,000
Total	5,872,000	5,924,000	5,924,000
Commercial and Industrial \| SBA guaranty \| Current
Loans and Allowance for Credit Losses - Loans
Financing Receivable, Recorded Investment, Current	5,872,000	5,924,000
Consumer Loans
Loans and Allowance for Credit Losses - Loans
Non-accrual	91,000	83,000
Total	22,086,000	23,303,000	23,303,000
Consumer Loans \| Current
Loans and Allowance for Credit Losses - Loans
Financing Receivable, Recorded Investment, Current	21,707,000	22,775,000
Consumer Loans \| 30 To 89 Days Past Due
Loans and Allowance for Credit Losses - Loans
Financing Receivable, Recorded Investment, Current	288,000	445,000
Consumer Loans \| Consumer
Loans and Allowance for Credit Losses - Loans
Financing Receivable, Recorded Investment, Current	2,399,000	2,039,000
Allowance for loan losses	37,000	30,000		23,000
Total	2,399,000	2,039,000	2,039,000
Consumer Loans \| Consumer \| Current
Loans and Allowance for Credit Losses - Loans
Financing Receivable, Recorded Investment, Current	2,399,000	1,981,000
Consumer Loans \| Consumer \| 30 To 89 Days Past Due
Loans and Allowance for Credit Losses - Loans
Financing Receivable, Recorded Investment, Current		58,000
Consumer Loans \| Automobile
Loans and Allowance for Credit Losses - Loans
Financing Receivable, Recorded Investment, Current	19,687,000	21,264,000
Non-accrual	91,000	83,000	72,000	85,000
Allowance for loan losses	168,000	177,000		$ 325,000
Total	19,687,000	21,264,000	$ 21,264,000
Consumer Loans \| Automobile \| Current
Loans and Allowance for Credit Losses - Loans
Financing Receivable, Recorded Investment, Current	19,308,000	20,794,000
Consumer Loans \| Automobile \| 30 To 89 Days Past Due
Loans and Allowance for Credit Losses - Loans
Financing Receivable, Recorded Investment, Current	$ 288,000	$ 387,000