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LOANS RECEIVABLE AND ALLOWANCE FOR LOAN LOSSES - Impaired financing receivables (Details) - USD ($)	9 Months Ended	12 Months Ended
	Sep. 30, 2020	Dec. 31, 2019
Financing Receivable, Impaired [Line Items]
Recorded Investment with specific reserves	$ 39,000	$ 26,000
Unpaid Principal Balance with specific reserves	39,000	41,000
Interest Income Recognized with specific reserves	2,000	2,000
Specific Reserve with specific reserves	11,000	15,000
Recorded Investment	50,000	50,000
Recorded Investment with no specific reserve	5,350,000	4,627,000
Unpaid Principal Balance with no specific reserve	5,596,000	5,396,000
Interest Income Recognized with no specific reserve	148,000	109,000
Specific Reserve	10,758
Average Recorded Investment with no specific reserve	6,781,000	5,895,000
Consumer
Financing Receivable, Impaired [Line Items]
Recorded Investment with specific reserves	39,000	26,000
Unpaid Principal Balance with specific reserves	39,000	41,000
Interest Income Recognized with specific reserves	2,000	2,000
Specific Reserve with specific reserves	11,000	15,000
Recorded Investment	50,000	50,000
Recorded Investment with no specific reserve	44,000	96,000
Unpaid Principal Balance with no specific reserve	44,000	96,000
Interest Income Recognized with no specific reserve	3,000	8,000
Average Recorded Investment with no specific reserve	66,000	122,000
Consumer | Real Estate Loan [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment with no specific reserve	522,000	728,000
Unpaid Principal Balance with no specific reserve	768,000	1,497,000
Interest Income Recognized with no specific reserve	3,000	14,000
Average Recorded Investment with no specific reserve	1,653,000	1,928,000
Indirect
Financing Receivable, Impaired [Line Items]
Interest Income Recognized with specific reserves		6,000
Recorded Investment with no specific reserve	215,000	123,000
Unpaid Principal Balance with no specific reserve	215,000	123,000
Interest Income Recognized with no specific reserve	8,000
Specific Reserve	10,758
Average Recorded Investment with no specific reserve	248,000
Commercial | Real Estate Loan [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment with no specific reserve	4,569,000	3,680,000
Unpaid Principal Balance with no specific reserve	4,569,000	3,680,000
Interest Income Recognized with no specific reserve	134,000	81,000
Average Recorded Investment with no specific reserve	$ 4,814,000	$ 3,845,000

X

- Definition

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

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 11B
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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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