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Condensed Consolidated Balance Sheets (Unaudited) (Parentheticals) - $ / shares
$ / shares in Thousands
9 Months Ended 12 Months Ended
Sep. 30, 2021
Dec. 31, 2020
Common stock, par value (in dollars per share) $ 0 $ 0
Common stock, shares issued (in shares) 47,786,013 27,557,363
Common stock, shares outstanding (in shares) 47,786,013 27,557,363
Common stock, authorized Unlimited Unlimited