Condensed Consolidated Balance Sheets (Current Period Unaudited)-parentheticals (Parentheticals) - $ / shares	Sep. 30, 2022	Dec. 31, 2021
Preferred Stock, Shares Authorized (in shares)	5,000,000	5,000,000
Preferred Stock, Par or Stated Value Per Share (in dollars per share)	$ 0.0001	$ 0.0001
Preferred Stock, Shares Issued (in shares)	0	0
Preferred Stock, Shares Outstanding, Ending Balance (in shares)	0	0
Common Stock, Shares Authorized (in shares)	150,000,000	150,000,000
Common Stock, Par or Stated Value Per Share (in dollars per share)	$ 0.0001	$ 0.0001
Common Stock, Shares, Issued (in shares)	41,125,578	40,851,945
Common Stock, Shares, Outstanding, Ending Balance (in shares)	41,125,578	40,851,945