INVESTMENT SECURITIES - Securities with unrealized losses (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2017	Dec. 31, 2017
Debt Securities, Available-for-sale [Line Items]
Less than 12 months, Fair Value	$ 8,959			$ 12,298
Less than 12 months, Unrealized Losses	(307)			(239)
More than 12 months, Fair Value	35,150			37,716
More than 12 months, Unrealized Losses	(2,097)			(1,347)
Total Fair Value	44,109			50,014
Total Unrealized Losses	(2,404)			(1,586)
Sales	22,500		$ 22,507
Realized gains		$ 100	$ 100
U.S. treasury and federal agency
Debt Securities, Available-for-sale [Line Items]
More than 12 months, Fair Value	249			249
More than 12 months, Unrealized Losses	(1)			(1)
Total Fair Value	249			249
Total Unrealized Losses	(1)			(1)
Association (“GNMA”) mortgage-backed securities – residential
Debt Securities, Available-for-sale [Line Items]
Less than 12 months, Fair Value	8,017			11,621
Less than 12 months, Unrealized Losses	(299)			(237)
More than 12 months, Fair Value	27,294			27,480
More than 12 months, Unrealized Losses	(1,649)			(955)
Total Fair Value	35,311			39,101
Total Unrealized Losses	(1,948)			(1,192)
Collateralized mortgage obligations issued by U.S. government sponsored entities and agencies
Debt Securities, Available-for-sale [Line Items]
Less than 12 months, Fair Value	876			677
Less than 12 months, Unrealized Losses	(6)			(2)
More than 12 months, Fair Value	7,607			7,968
More than 12 months, Unrealized Losses	(447)			(294)
Total Fair Value	8,483			8,645
Total Unrealized Losses	(453)			(296)
Corporate collateralized mortgage obligations and mortgage-backed securities
Debt Securities, Available-for-sale [Line Items]
Less than 12 months, Fair Value	66
Less than 12 months, Unrealized Losses	(2)
More than 12 months, Fair Value				1,316
More than 12 months, Unrealized Losses				(50)
Total Fair Value	66			1,316
Total Unrealized Losses	$ (2)			(50)
Equity mutual fund
Debt Securities, Available-for-sale [Line Items]
More than 12 months, Fair Value				703
More than 12 months, Unrealized Losses				(47)
Total Fair Value				703
Total Unrealized Losses				$ (47)