Consolidated Balance Sheets (Current Period Unaudited) (Parentheticals) - USD ($) $ in Thousands	Jun. 30, 2023	Sep. 30, 2022
Note payable, discount, noncurrent	$ 0
Preferred stock, par value (in dollars per share)	$ 0.0001	$ 0.0001
Preferred Stock, Shares Authorized (in shares)	20,000,000	20,000,000
Preferred Stock, Shares Outstanding (in shares)	0	0
Common stock, par value (in dollars per share)	$ 0.0001	$ 0.0001
Common Stock, Shares Authorized (in shares)	100,000,000	100,000,000
Common Stock, Shares, Issued (in shares)	24,391,961	24,391,961
Common Stock, Shares, Outstanding (in shares)	24,391,961	24,391,961