Balance Sheets (Parenthetical) - USD ($) $ in Thousands	Dec. 31, 2022	Sep. 30, 2022
Statement of Financial Position [Abstract]
Property and equipment, accumulated depreciation	$ 2,106	$ 2,057
Common stock, no par value	$ 0	$ 0
Common stock, shares authorized	22,500,000	22,500,000
Common stock, shares issued	7,573,706	7,571,741
Common stock, shares outstanding	7,573,706	7,571,741