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Condensed Consolidated Balance Sheets (Current Period Unaudited) (Parentheticals) - USD ($)
 6 Months Ended 12 Months Ended
Jun. 30, 2016
Dec. 31, 2015
Series B Preferred Stock [Member]    
Preferred Stock, Par Value (in dollars per share) $ 0.000001 $ 0.000001
Preferred Stock, Shares Authorized (in shares) 18,000,000 18,000,000
Preferred Stock, Shares Issued (in shares) 11,018,766 11,018,766
Preferred Stock, Shares Outstanding (in shares) 0 0
Common Stock, Par Value (in dollars per share) $ 0.0001 $ 0.0001
Common Stock, Shares Authorized (in shares) 100,000,000 20,000,000
Common Stock, Shares Issued (in shares) 86,078 7,612,838
Common Stock, Shares Outstanding (in shares) 86,078 6,612,838
Treasury Stock, Par Value $ 0.001 $ 0.001
Treasury Stock, Shares (in shares) 1,000,000 1,000,000