Quarterly report pursuant to Section 13 or 15(d)

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

v3.22.2.2
Condensed Consolidated Balance Sheets (Current Period Unaudited) (Parentheticals) - $ / shares
Jun. 30, 2022
Dec. 31, 2021
Preferred stock, par value (in dollars per share) $ 0.001 $ 0.001
Preferred stock, shares authorized (in shares) 40,000,000 40,000,000
Preferred stock, shares issued (in shares) 0 0
Preferred stock, shares outstanding (in shares) 0 0
Common stock, par value (in dollars per share) $ 0.001 $ 0.001
Common stock, shares authorized (in shares) 300,000,000 300,000,000
Common stock, shares issued (in shares) 160,237,149 159,140,665
Common stock, shares outstanding (in shares) 160,237,149 159,140,665