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Consolidated Statements of Stockholders' Equity (Unaudited)-parentheticals (Parentheticals)
Sep. 30, 2021
$ / shares
Warrants at $6.50 Per Share [Member]  
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share) $ 6.50
Warrants at $8.125 Per Share [Member]  
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share) $ 8.125