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Consolidated Balance Sheets (Parentheticals) - $ / shares
Dec. 31, 2015
Dec. 31, 2014
Common Stock, Par Value (in Dollars per share) $ 0.01 $ 0.01
Common Stock, Shares Authorized 100,000,000 100,000,000
Common Stock, Shares Issued 44,285,108 44,285,108
Common Stock, Shares Outstanding 40,517,676 42,889,773
Preferred Shares Authorized 5,000,000 5,000,000
Preferred Shares Outstanding 0 0
Preferred Shares Par Value (in Dollars per share) $ 0.01 $ 0.01
Treasury stock, shares 3,767,432 1,395,335
Treasury stock, par value (in Dollars per share) $ 0.01 $ 0.01