Balance Sheets (Current Period Unaudited) (Parentheticals) - USD ($) $ / shares in Thousands, $ in Thousands	Dec. 31, 2023	Sep. 30, 2023
Accumulated depreciation	$ 2,356	$ 2,287
Common Stock, No Par Value (in dollars per share)	$ 0	$ 0
Common Stock, Authorized (in shares)	22,500,000	22,500,000
Common Stock, Issued (in shares)	7,673,869	7,671,099
Common Stock, Outstanding (in shares)	7,673,869	7,671,099