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LOANS RECEIVABLE AND ALLOWANCE FOR LOAN LOSSES - Credit Quality Information (Details)	6 Months Ended	12 Months Ended
	Jun. 30, 2020 USD ($) loan	Dec. 31, 2019 USD ($) loan	Jun. 30, 2019 USD ($)	Dec. 31, 2018 USD ($)
Financing Receivable, Recorded Investment [Line Items]
Total	$ 284,963,000	$ 284,738,000
Non-accrual	3,941,000	4,127,000	$ 4,518,000	$ 1,947,000
Troubled debt restructures	$ 40,000	$ 41,000
Number of TDRs accounts | loan	1	1
Non-performing TDRs	40	41,000
Number of non-performing TDRs accounts | loan	1	1
Pass
Financing Receivable, Recorded Investment [Line Items]
Total	$ 280,525,000	$ 280,070,000
Substandard
Financing Receivable, Recorded Investment [Line Items]
Total	4,320,000	4,589,000
Doubtful
Financing Receivable, Recorded Investment [Line Items]
Total	118,000	79,000
Consumer
Financing Receivable, Recorded Investment [Line Items]
Total	12,221,000	12,076,000
Non-accrual	86,000	137,000	216,000	186,000
Troubled debt restructures	$ 40,000	$ 41,000
Number of TDRs accounts | loan	1	1
Non-performing TDRs	40	41,000
Number of non-performing TDRs accounts | loan	1	1
Consumer | Pass
Financing Receivable, Recorded Investment [Line Items]
Total	$ 12,136,000	$ 11,939,000
Consumer | Substandard
Financing Receivable, Recorded Investment [Line Items]
Total	85,000	137,000
Residential Real estate
Financing Receivable, Recorded Investment [Line Items]
Total	83,089,000	81,033,000
Non-accrual	631,000	728,000	883,000	956,000
Residential Real estate | Pass
Financing Receivable, Recorded Investment [Line Items]
Total	82,459,000	80,305,000
Residential Real estate | Substandard
Financing Receivable, Recorded Investment [Line Items]
Total	630,000	728,000
Indirect
Financing Receivable, Recorded Investment [Line Items]
Total	87,168,000	102,384,000
Non-accrual	152,000	123,000	30,000	116,000
Indirect | Pass
Financing Receivable, Recorded Investment [Line Items]
Total	87,015,000	102,261,000
Indirect | Substandard
Financing Receivable, Recorded Investment [Line Items]
Total	35,000	44,000
Indirect | Doubtful
Financing Receivable, Recorded Investment [Line Items]
Total	118,000	79,000
Commercial
Financing Receivable, Recorded Investment [Line Items]
Total	11,809,000	11,907,000
Non-accrual			86,000	27,000
Commercial | Pass
Financing Receivable, Recorded Investment [Line Items]
Total	11,809,000	11,907,000
Commercial SBA PPP
Financing Receivable, Recorded Investment [Line Items]
Total	17,367,000	0
Commercial SBA PPP | Pass
Financing Receivable, Recorded Investment [Line Items]
Total	17,367,000
Construction
Financing Receivable, Recorded Investment [Line Items]
Total	2,928,000	3,317,000
Construction | Pass
Financing Receivable, Recorded Investment [Line Items]
Total	2,928,000	3,317,000
Commercial Real Estate
Financing Receivable, Recorded Investment [Line Items]
Total	70,381,000	74,021,000
Non-accrual	3,072,000	3,139,000	$ 3,303,000	$ 662,000
Commercial Real Estate | Pass
Financing Receivable, Recorded Investment [Line Items]
Total	66,811,000	70,341,000
Commercial Real Estate | Substandard
Financing Receivable, Recorded Investment [Line Items]
Total	$ 3,570,000	$ 3,680,000

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- Definition

Number of financing receivables accounts that have been modified by troubled debt restructurings within the previous 12 months and for which there was a payment default.

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