CONSOLIDATED STATEMENTS OF FINANCIAL CONDITION (Unaudited) (Parenthetical) - USD ($) $ in Thousands	Jun. 30, 2020	Dec. 31, 2019
Statement of Financial Position [Abstract]
Investment securities, held to maturity, fair value	$ 238,499	$ 241,429
Preferred Stock, par value (in dollar per share)	$ 0.01	$ 0.01
Preferred Stock, shares authorized	3,000,000	3,000,000
Common Stock, par value (in dollar per share)	$ 0.01	$ 0.01
Common Stock, shares authorized	90,000,000	90,000,000
Common Stock, shares issued	16,780,276	16,771,544
Common Stock, shares outstanding	16,780,276	16,771,544