SECURITIES - Amortized cost, fair value and tax equivalent yield of securities (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2020 USD ($)
U.S. Government agency notes - After 1 year but within 5 years
Amortized cost
Fair value
Yield
U.S. Government agency notes - After 5 years but within 10 years
Amortized cost	$ 2,496
Fair value	$ 2,567
Yield	3.48%
U.S. Government agency notes - Total
Amortized cost	$ 2,493
Fair value	$ 2,567
Yield	3.48%
Municipal bonds - After 5 year but within 10 years
Amortized cost	$ 1,727
Fair value	$ 1,841
Yield	3.16%
Municipal bonds - After 10 years
Amortized cost	$ 24,665
Fair value	$ 25,409
Yield	3.43%
Municipal bonds - Total
Amortized cost	$ 26,392
Fair value	$ 27,250
Yield	3.41%
Mortgage-backed securities and Collateralized mortgage obligations - U.S. Government agencies
Amortized cost	$ 54,399
Fair value	$ 56,394
Yield	2.85%
Corporate bonds - After 5 years but within 10 years
Amortized cost	$ 5,000
Fair value	$ 5,122
Yield	5.21%
Securities available-for-sale
Amortized cost	$ 88,287
Fair value	$ 91,333
Yield	3.17%