CONSOLIDATED STATEMENTS OF FINANCIAL CONDITION (Parenthetical) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Securities held to maturity, fair value	$ 5,630	$ 6,419
Common stock, par value	$ 0.01	$ 0.01
Common stock, shares authorized	10,000,000	10,000,000
Common stock, shares issued	4,633,012	4,604,563
Common stock, shares outstanding	4,633,012	4,604,563
Preferred Class B [Member]
Preferred stock, par value	$ 0.01	$ 0.01
Preferred stock, shares authorized	2,000,000	2,000,000
Preferred stock, shares issued	272,636	272,636
Preferred stock, shares outstanding	272,636	272,636