Consolidated Statements of Financial Condition (Parentheticals) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Statement of Financial Position [Abstract]
Held-to-maturity securities, fair value	$ 20,054	$ 27,670
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 (in dollars per share)	$ 0.01	$ 0.01
Common stock, shares authorized	150,000,000	150,000,000
Common stock, shares issued	88,228,000	88,228,000
Common stock, shares outstanding	77,952,000	77,695,000
Treasury stock, shares	10,276,000	10,533,000