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Condensed Consolidated Balance Sheets (Current Period Unaudited) (Parentheticals) (USD $)
Mar. 31, 2014
Dec. 31, 2013
Preferred stock, par or stated value (in Dollars per share) $ 0.01 $ 0.01
Prеfеrrеd stock, sharеs authorizеd 10,000,000 10,000,000
Common stock, par value (in Dollars per share) $ 0.001 $ 0.001
Common stock, authorized shares 75,000,000 75,000,000
Common stock, issued shares 24,968,037 23,765,180
Common stock, outstanding shares 24,968,037 23,765,180
Series A Convertible Preferred Stock [Member]
    
Preferred stock, par or stated value (in Dollars per share) $ 1,000 $ 1,000
Prеfеrrеd stock, sharеs issuеd 0 71
Prеfеrrеd stock, sharеs outstanding 0 71
Series B Convertible Preferred Stock [Member]
    
Preferred stock, par or stated value (in Dollars per share) $ 1,000 $ 1,000
Prеfеrrеd stock, sharеs issuеd 1,300 1,650
Prеfеrrеd stock, sharеs outstanding 1,300 1,650