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INVESTMENT SECURITIES (Details Textual) - USD ($)	3 Months Ended	12 Months Ended
	Mar. 31, 2017	Dec. 31, 2017		Dec. 31, 2016		Dec. 31, 2015	Dec. 31, 2005
Investments [Line Items]
Gross investment gains		$ 115,000		$ 183,000		$ 107,000
Gross investment losses				(6,000)			$ (36,000)
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for Sale of Securities, Net of Tax		76,000		117,000		46,000
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for Sale of Securities, Tax		39,000	[1]	60,000	[1]	25,000
Investment Securities:
Consolidated investment securities portfolio modified, years	3 years 8 months 8 days
Proceeds from sales of investment securities — available for sale		8,143,000		8,966,000		$ 3,570,000
Book value of securities available for sale and held to maturity		$ 117,181,000		$ 104,953,000
Held-to-maturity, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions		133
Corporate bonds [Member]
Investment Securities:
Available For Sale Securities Debt Maturities Weighted Average Maturity Term		5 years 5 months 8 days
U.S. Agency [Member]
Investments [Line Items]
Portfolio rated		10.00%
Investment Securities:
Available For Sale Securities Debt Maturities Weighted Average Maturity Term		10 years 4 months 17 days
Held To Maturity Securities Weighted Average Maturity Term		4 years 6 months 25 days
U.S. Agency mortgage-backed securities [Member]
Investment Securities:
Available For Sale Securities Debt Maturities Weighted Average Maturity Term		4 years 7 months 6 days
Held To Maturity Securities Weighted Average Maturity Term		6 years 6 months 4 days
Standard & Poor's, AAA Rating [Member]
Investments [Line Items]
Portfolio rated		57.80%		63.50%
Standard & Poor's, A Rating [Member]
Investments [Line Items]
Portfolio rated		9.70%
[1] Amounts in parentheses indicate credits.

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