Consolidated Balance Sheets (Unaudited) (Parentheticals) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2016	Dec. 31, 2015
Investment securities held to maturity, at fair value (in Dollars)	$ 181,306	$ 171,845
Loans receivable, allowance for loan losses (in Dollars)	$ 9,029	$ 8,703
Preferred stock par value (in Dollars per share)	$ 0.01	$ 0.01
Preferred stock, shares authorized	10,000,000	10,000,000
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	50,000,000	50,000,000
Common stock, shares issued	38,366,098	38,365,848
Common stock, shares outstanding	37,837,253	37,837,003
Treasury stock	503,408	503,408
Stock held by deferred compensation plan	25,437	25,437