Balance Sheets (Parenthetical) - USD ($) $ in Thousands	Mar. 31, 2020	Sep. 30, 2019
Statement of Financial Position [Abstract]
Property and equipment, accumulated depreciation	$ 1,493	$ 1,379
Common stock, no par value	$ 0	$ 0
Common stock, shares authorized	22,500,000	22,500,000
Common stock, shares issued	7,261,323	7,527,040
Common stock, shares outstanding	7,261,323	7,527,040