INVESTMENT SECURITIES - Schedule of contractual maturity of Available for Sale (Details) - USD ($)	Sep. 30, 2018	Dec. 31, 2017
Available for Sale, Amortized Cost
Within one year	$ 0	$ 0
One to five years	0	1,581,000
Five to ten years	22,018,000	17,036,000
Due after ten years	6,508,000	13,887,000
Amortized Cost, total	28,526,000	32,504,000
Available for Sale, Amortized Cost	28,526,000	32,504,000
Available for Sale, Fair Value
Within one year	0	0
One to five years	0	1,550,000
Five to ten years	21,205,000	16,905,000
Due after ten years	6,285,000	13,702,000
Fair Value, total	27,490,000	32,157,000
Available for Sale, Fair Value	27,490,000	32,157,000
Securities pledged fair value	0	0
Residential mortgage-backed securities
Available for Sale, Amortized Cost
Available for Sale, Amortized Cost	22,911,000	24,856,000
Available for Sale, Fair Value
Available for Sale, Fair Value	22,125,000	24,684,000
Residential collateralized mortgage obligations
Available for Sale, Amortized Cost
Available for Sale, Amortized Cost	2,340,000	2,809,000
Available for Sale, Fair Value
Available for Sale, Fair Value	2,205,000	2,706,000
Commercial collateralized mortgage obligations
Available for Sale, Amortized Cost
Available for Sale, Amortized Cost		1,581,000
Available for Sale, Fair Value
Available for Sale, Fair Value		1,550,000
CRA mutual fund
Available for Sale, Amortized Cost
Available for Sale, Amortized Cost	2,195,000	2,160,000
Available for Sale, Fair Value
Available for Sale, Fair Value	$ 2,077,000	$ 2,108,000