Quarterly report pursuant to Section 13 or 15(d)

Condensed Consolidated Balance Sheets (Current Period Unaudited) (Parentheticals)

v3.19.2
Condensed Consolidated Balance Sheets (Current Period Unaudited) (Parentheticals) - $ / shares
Jun. 30, 2019
Dec. 31, 2018
Preferred stock, par value (in dollars per share)   $ 0.001
Preferred stock, shares authorized (in shares)   5,000,000
Preferred stock, shares issued (in shares)   7,000
Preferred stock, shares outstanding (in shares)   7,000
Common stock, par value (in dollars per share) $ 0.001 $ 0.001
Common stock, shares authorized (in shares) 50,000,000 50,000,000
Common stock, shares issued (in shares) 47,132,220 33,859,034
Common stock, shares to be issued (in shares) 0 2,470,565
Common stock, shares outstanding (in shares) 47,098,886 33,825,701
Treasury stock, at cost, shares (in shares) 33,333 33,333