LOANS RECEIVABLE AND ALLOWANCE FOR CREDIT LOSSES - Loans - Impaired Financing Receivables (Details) - USD ($)	9 Months Ended	12 Months Ended
Sep. 30, 2023	Dec. 31, 2022
Financing Receivable, Impaired [Line Items]
Recorded Investment with specific reserves	$ 160,000	$ 254,000
Unpaid Principal Balance with specific reserves	331,000	333,000
Interest Income Recognized with specific reserves	3,000	21,000
Specific Reserve with specific reserves	171,000	79,000
Average Recorded Investment	547,000	547,000
Recorded Investment with no specific reserve	253,000	155,000
Unpaid Principal Balance with no specific reserve	253,000	155,000
Interest Income Recognized with no specific reserve	11,000	8,000
Average Recorded Investment with no specific reserve	293,000	186,000
Real Estate Loan
Financing Receivable, Impaired [Line Items]
Recorded Investment with specific reserves	9,000	14,000
Unpaid Principal Balance with specific reserves	31,000	34,000
Interest Income Recognized with specific reserves	3,000	2,000
Specific Reserve with specific reserves	22,000	20,000
Average Recorded Investment	48,000	48,000
Recorded Investment with no specific reserve	118,000	70,000
Unpaid Principal Balance with no specific reserve	118,000	70,000
Interest Income Recognized with no specific reserve	5,000	2,000
Average Recorded Investment with no specific reserve	131,000	79,000
Commercial and Industrial
Financing Receivable, Impaired [Line Items]
Recorded Investment with specific reserves	151,000	240,000
Unpaid Principal Balance with specific reserves	300,000	299,000
Interest Income Recognized with specific reserves		19,000
Specific Reserve with specific reserves	149,000	59,000
Average Recorded Investment	499,000	499,000
Consumer Loans
Financing Receivable, Impaired [Line Items]
Recorded Investment with no specific reserve	135,000	85,000
Unpaid Principal Balance with no specific reserve	135,000	85,000
Interest Income Recognized with no specific reserve	6,000	6,000
Average Recorded Investment with no specific reserve	162,000	107,000
Single-family Residential \| Real Estate Loan
Financing Receivable, Impaired [Line Items]
Recorded Investment with specific reserves	9,000	14,000
Unpaid Principal Balance with specific reserves	31,051	34,000
Interest Income Recognized with specific reserves	3,000	2,000
Specific Reserve with specific reserves	22,000	20,000
Average Recorded Investment	48,000	48,000
Recorded Investment with no specific reserve	118,000	70,000
Unpaid Principal Balance with no specific reserve	118,000	70,000
Interest Income Recognized with no specific reserve	5,000	2,000
Specific Reserve loan	21,621
Average Recorded Investment with no specific reserve	131,000	79,000
Commercial \| Real Estate Loan
Financing Receivable, Impaired [Line Items]
Specific Reserve with specific reserves	149,000
Commercial and Industrial \| Commercial and Industrial
Financing Receivable, Impaired [Line Items]
Recorded Investment with specific reserves	151,000	240,000
Unpaid Principal Balance with specific reserves	300,000	299,000
Interest Income Recognized with specific reserves		19,000
Specific Reserve with specific reserves	149,000	59,000
Average Recorded Investment	499,000	499,000
Specific Reserve loan	149,453
Automobile \| Consumer Loans
Financing Receivable, Impaired [Line Items]
Recorded Investment with no specific reserve	135,000	85,000
Unpaid Principal Balance with no specific reserve	135,000	85,000
Interest Income Recognized with no specific reserve	6,000	6,000
Average Recorded Investment with no specific reserve	$ 162,000	$ 107,000

Amount of valuation allowance for financing receivables that are expected to be uncollectible that were individually evaluated for impairment.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Section 50
-Paragraph 11B
-Subparagraph (g)
-SubTopic 10
-Topic 310
-Publisher FASB
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Amount of allowance for credit losses related to recorded investment.

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-Name Accounting Standards Codification
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Amount of interest income, recognized on cash basis, on financing receivables, for which there is no related allowance for credit losses and are recognized as impaired.

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Amount of investment in impaired financing receivables for which there is no related allowance for credit losses.

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Amount of unpaid principal balance of impaired financing receivables for which there is no related allowance for credit losses.

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Amount of average investment of impaired financing receivables for which there is a related allowance for credit losses.

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Amount of interest income on financing receivables, for which there is a related allowance for credit losses, recognized on a cash-basis method of accounting that the financing receivables were impaired.

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