SECURITIES - Aggreggate fair value and gross unrealized loss of securities (Details) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Less Than 12 Months, Fair value
Available-for-sale
U.S. Government Agency notes		$ 34
Municipal bonds	6,307
Mortgage-backed securities: U.S. Government agencies and U.S. Government- sponsored enterprises	6,097	13,063
Collateralized mortgage obligations: U.S. Government agencies
Total temporarily impaired securities	12,404	13,097
Less Than 12 Months, Unrealized losses
Available-for-sale
U.S. Government Agency notes
Municipal bonds	45
Mortgage-backed securities: U.S. Government agencies and U.S. Government- sponsored enterprises	34	175
Collateralized mortgage obligations: U.S. Government agencies
Total temporarily impaired securities	79	175
12 Months or Longer, Fair value
Available-for-sale
U.S. Government Agency notes	306	532
Municipal bonds
Mortgage-backed securities: U.S. Government agencies and U.S. Government- sponsored enterprises	731	26,777
Collateralized mortgage obligations: U.S. Government agencies		8,281
Total temporarily impaired securities	1,037	35,590
12 Months or Longer, Unrealized losses
Available-for-sale
U.S. Government Agency notes	3	3
Municipal bonds
Mortgage-backed securities: U.S. Government agencies and U.S. Government- sponsored enterprises	3	386
Collateralized mortgage obligations: U.S. Government agencies		173
Total temporarily impaired securities	6	562
Total, Fair value
Available-for-sale
U.S. Government Agency notes	306	566
Municipal bonds	6,307
Mortgage-backed securities: U.S. Government agencies and U.S. Government- sponsored enterprises	6,828	39,840
Collateralized mortgage obligations: U.S. Government agencies		8,281
Total temporarily impaired securities	13,441	48,687
Total, Unrealized losses
Available-for-sale
U.S. Government Agency notes	3	3
Municipal bonds	45
Mortgage-backed securities: U.S. Government agencies and U.S. Government- sponsored enterprises	37	561
Collateralized mortgage obligations: U.S. Government agencies		173
Total temporarily impaired securities	$ 85	$ 737