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LOANS - Troubled Debt Restructurings (Details) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021 USD ($) loan	Jun. 30, 2020 USD ($) loan	Jun. 30, 2021 USD ($) loan	Jun. 30, 2020 USD ($) loan
Troubled Debt Restructurings
Troubled debt restructurings, number of contracts | loan	1	1	3	2
Troubled debt restructurings, post-modification recorded investment | $	$ 116	$ 240	$ 152	$ 270
Commercial | Real estate loan | Interest only payments for a nine-month period
Troubled Debt Restructurings
Troubled debt restructurings, number of contracts | loan	0	1	0	1
Troubled debt restructurings, post-modification recorded investment | $	$ 0	$ 240	$ 0	$ 240
Residential mortgage | Real estate loan | Reduced monthly payments and extended maturity date
Troubled Debt Restructurings
Troubled debt restructurings, number of contracts | loan			1	0
Troubled debt restructurings, post-modification recorded investment | $			$ 24	$ 0
Residential mortgage | Real estate loan | first liens | Reduced monthly payments for a fifteen-month period
Troubled Debt Restructurings
Troubled debt restructurings, number of contracts | loan	1	0	1	0
Troubled debt restructurings, post-modification recorded investment | $	$ 116	$ 0	$ 116	$ 0
Residential mortgage | Real estate loan | first liens | Reduced monthly payments and extended maturity date
Troubled Debt Restructurings
Troubled debt restructurings, number of contracts | loan			1	0
Troubled debt restructurings, post-modification recorded investment | $			$ 12	$ 0
Residential mortgage | Real estate loan | junior liens | New loan at lower than risk-adjusted market rate to borrower from whom short sale of other collateral was accepted
Troubled Debt Restructurings
Troubled debt restructurings, number of contracts | loan			0	1
Troubled debt restructurings, post-modification recorded investment | $			$ 0	$ 30

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Number of financing receivables that have been modified by troubled debt restructurings.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 33
-URI http://asc.fasb.org/extlink&oid=121611835&loc=SL6953676-111524

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Amount, after troubled debt restructuring, of modified financing receivable.

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Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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-Name Accounting Standards Codification
-Topic 310
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