SECURITIES - Aggreggate fair value and gross unrealized loss of securities (Details) - USD ($) $ in Thousands	Mar. 31, 2019	Dec. 31, 2018
Less Than 12 Months, Fair value
Available-for-sale
U.S. Government Agency notes		$ 34
Mortgage-backed securities: U.S. Government agencies and U.S. Government- sponsored enterprises	1,060	13,063
Collateralized mortgage obligations: U.S. Government agencies
Total temporarily impaired securities	1,060	13,097
Less Than 12 Months, Unrealized losses
Available-for-sale
U.S. Government Agency notes
Mortgage-backed securities: U.S. Government agencies and U.S. Government- sponsored enterprises	13	175
Collateralized mortgage obligations: U.S. Government agencies
Total temporarily impaired securities	13	175
12 Months or Longer, Fair value
Available-for-sale
U.S. Government Agency notes	448	532
Mortgage-backed securities: U.S. Government agencies and U.S. Government- sponsored enterprises	22,957	26,777
Collateralized mortgage obligations: U.S. Government agencies	8,159	8,281
Total temporarily impaired securities	31,564	35,590
12 Months or Longer, Unrealized losses
Available-for-sale
U.S. Government Agency notes	2	3
Mortgage-backed securities: U.S. Government agencies and U.S. Government- sponsored enterprises	140	386
Collateralized mortgage obligations: U.S. Government agencies	74	173
Total temporarily impaired securities	216	562
Total, Fair value
Available-for-sale
U.S. Government Agency notes	448	566
Mortgage-backed securities: U.S. Government agencies and U.S. Government- sponsored enterprises	24,017	39,840
Collateralized mortgage obligations: U.S. Government agencies	8,159	8,281
Total temporarily impaired securities	32,624	48,687
Total, Unrealized losses
Available-for-sale
U.S. Government Agency notes	2	3
Mortgage-backed securities: U.S. Government agencies and U.S. Government- sponsored enterprises	153	561
Collateralized mortgage obligations: U.S. Government agencies	74	173
Total temporarily impaired securities	$ 229	$ 737