Consolidated Balance Sheets (Parentheticals) - $ / shares	Dec. 31, 2016	Dec. 31, 2015
Consolidated Balance Sheets [Abstract]
Common stock, par value (in Dollars per share)	$ 0.01	$ 0.01
Common stock, shares authorized	40,000,000	40,000,000
Common stock, shares issued	23,800,924	23,419,008
Common stock outstanding	23,446,035	23,167,216
Treasury stock, shares	354,889	251,792