PREMISES AND EQUIPMENT (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Operating Leases [Abstract]
Weighed average remaining lease term	8 years 9 months 18 days		8 years 9 months 18 days
Weighted average discount rate used in measurement of operating lease liabilities	0.85%		0.85%
Lease Expenses [Abstract]
Short-term lease expense	$ 39,000	$ 27,000	$ 113,000	$ 75,000
Operating lease expense	300,000	273,000	899,000	847,000
Total lease expense	339,000	$ 300,000	1,012,000	$ 922,000
Future Minimum Rental Commitments under Operating Leases [Abstract]
2020	279,000		279,000
2021	1,067,000		1,067,000
2022	1,050,000		1,050,000
2023	805,000		805,000
2024	680,000		680,000
2025 and Thereafter	3,494,000		3,494,000
Total undiscounted cash flows	7,375,000		7,375,000
Discounted cash flows	(375,000)		(375,000)
Total lease liability	$ 7,000,000		$ 7,000,000
Minimum [Member]
Operating Leases [Abstract]
Term of leases	2 years		2 years
Maximum [Member]
Operating Leases [Abstract]
Term of leases	16 years		16 years