LOANS AND ALLOWANCE FOR LOAN LOSSES - Troubled Debt Restructures (Details)	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 30, 2020 USD ($)	Jun. 30, 2019 USD ($)	Jun. 30, 2020 USD ($) item	Jun. 30, 2019 USD ($)	Dec. 31, 2019 USD ($) item
Loans past due
Accruing	$ 2,896,000		$ 2,896,000		$ 2,459,000
Nonaccrual	504,000		504,000		487,000
Total	3,400,000		3,400,000		2,946,000
Specific reserve	405,000		405,000		344,000
Charge offs	0	$ 0	0	$ 0
Commercial real estate
Loans past due
Accruing	2,896,000		2,896,000		2,437,000
Nonaccrual	479,000		479,000		482,000
Total	3,375,000		$ 3,375,000		$ 2,919,000
Amount of loan defaulted		$ 482,000		$ 777,000
Number of loans modified | item			1		1
Total recorded investment			$ 511,000		$ 25,000
Commercial and industrial
Loans past due
Accruing					22,000
Nonaccrual	25,000		25,000		5,000
Total	25,000		25,000		$ 27,000
Amount of loan defaulted	$ 21,000		$ 21,000