Consolidated Statements of Financial Condition (Parentheticals) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Other securities, fair value option	$ 35,408	$ 6,180
Mortgage-backed securities, fair value option	2,016	2,527
Other securities, fair value option	$ 28,429	$ 28,205
Preferred stock, par value (in dollars per share)	$ 0.01	$ 0.01
Preferred stock, shares authorized (in shares)	5,000,000	5,000,000
Preferred stock, shares issued (in shares)	0	0
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common stock, shares authorized (in shares)	100,000,000	100,000,000
Common stock, shares issued (in shares)	31,530,595	31,530,595
Common stock, shares outstanding (in shares)	28,632,904	28,830,558
Treasury stock, at average cost (in shares)	2,897,691	2,700,037
Collateralized Mortgage Backed Securities [Member]
Mortgage-backed securities, assets pledged	$ 145,860	$ 496,121
Other Securities [Member]
Mortgage-backed securities, assets pledged	$ 82,064	$ 0