CONSOLIDATED STATEMENTS OF FINANCIAL CONDITION (Unaudited) (Parenthetical) - USD ($) $ in Thousands	Jun. 30, 2015	Dec. 31, 2014
Statement Of Financial Position [Abstract]
Held to maturity, Fair Value	$ 4,679	$ 0
Allowance for loan losses	$ 16,881	$ 17,687
Preferred stock, par value	$ 0	$ 0
Preferred stock, shares authorized	1,000,000	1,000,000
Preferred stock, shares issued	0	0
Preferred stock, shares outstanding	0	0
Common stock, par value	$ 0	$ 0
Common stock, shares authorized	499,000,000	499,000,000
Common stock, shares issued	54,138,910	54,138,910
Common stock, shares outstanding	47,763,154	49,239,004
Treasury stock, shares	6,375,756	4,899,906