INVESTMENT SECURITIES - Schedule of contractual maturity of Held to Maturity (Details 3) - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017
Held to Maturity, Amortized Cost
Within one year	$ 25	$ 0
One to five years	0	25
Five to ten years	0	0
Due after ten years	0	0
Amortized Cost, total	25	25
Held to Maturity, Amortized Cost	4,985	5,428
Held to Maturity, Fair Value
Within one year	25	0
One to five years	0	25
Five to ten years	0	0
Due after ten years	0	0
Fair Value, total	25	25
Held to Maturity, Fair Value	4,782	5,330
Residential mortgage-backed securities
Held to Maturity, Amortized Cost
Held to Maturity, Amortized Cost	4,960	5,403
Held to Maturity, Fair Value
Held to Maturity, Fair Value	4,757	5,305
Residential collateralized mortgage obligations
Held to Maturity, Amortized Cost
Held to Maturity, Amortized Cost	0	0
Held to Maturity, Fair Value
Held to Maturity, Fair Value	0	0
Commercial collateralized mortgage obligations
Held to Maturity, Amortized Cost
Held to Maturity, Amortized Cost		0
Held to Maturity, Fair Value
Held to Maturity, Fair Value		0
CRA mutual fund
Held to Maturity, Amortized Cost
Held to Maturity, Amortized Cost	0	0
Held to Maturity, Fair Value
Held to Maturity, Fair Value	$ 0	$ 0

Amount of investment in debt security measured at amortized cost (held-to-maturity).

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