SECURITIES - Aggreggate fair value and gross unrealized loss of securities (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Less Than 12 Months, Fair value
Available-for-sale
U.S. Government Agency notes		$ 34
Municipal bonds	6,273
Mortgage-backed securities: U.S. Government agencies and U.S. Government- sponsored enterprises	5,781	13,063
Collateralized mortgage obligations: U.S. Government agencies	1,438
Total temporarily impaired securities	13,492	13,097
Less Than 12 Months, Unrealized losses
Available-for-sale
U.S. Government Agency notes
Municipal bonds	73
Mortgage-backed securities: U.S. Government agencies and U.S. Government- sponsored enterprises	22	175
Collateralized mortgage obligations: U.S. Government agencies	10
Total temporarily impaired securities	105	175
12 Months or Longer, Fair value
Available-for-sale
U.S. Government Agency notes	195	532
Municipal bonds
Mortgage-backed securities: U.S. Government agencies and U.S. Government- sponsored enterprises	704	26,777
Collateralized mortgage obligations: U.S. Government agencies		8,281
Total temporarily impaired securities	899	35,590
12 Months or Longer, Unrealized losses
Available-for-sale
U.S. Government Agency notes	1	3
Municipal bonds
Mortgage-backed securities: U.S. Government agencies and U.S. Government- sponsored enterprises	2	386
Collateralized mortgage obligations: U.S. Government agencies		173
Total temporarily impaired securities	3	562
Total, Fair value
Available-for-sale
U.S. Government Agency notes	195	566
Municipal bonds	6,273
Mortgage-backed securities: U.S. Government agencies and U.S. Government- sponsored enterprises	6,485	39,840
Collateralized mortgage obligations: U.S. Government agencies	1,438	8,281
Total temporarily impaired securities	14,391	48,687
Total, Unrealized losses
Available-for-sale
U.S. Government Agency notes	1	3
Municipal bonds	73
Mortgage-backed securities: U.S. Government agencies and U.S. Government- sponsored enterprises	24	561
Collateralized mortgage obligations: U.S. Government agencies	10	173
Total temporarily impaired securities	$ 108	$ 737