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Consolidated Balance Sheets (Parentheticals) - $ / shares
Dec. 31, 2015
Dec. 31, 2014
Preferred Stock, par value (in dollars per share) $ 0 $ 0
Preferred stock, shares issued (in shares) 0 0
Preferred stock, shares outstanding (in shares) 0 0
Common stock, par value (in dollars per share) $ 0 $ 0
Common stock, shares issued (in shares) 7,490,288 2,293,057
Common stock, shares outstanding (in shares) 7,490,288 2,293,057