Unaudited Condensed Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands	Feb. 28, 2022	Aug. 31, 2021
Statement Of Financial Position [Abstract]
Allowance for doubtful accounts	$ 197	$ 199
Common stock, par value (in dollars per share)	$ 0.0000056	$ 0.0000056
Common stock, shares authorized	7,500,000	7,500,000
Common stock, shares issued	4,514,000	4,460,000
Common stock, shares outstanding	4,514,000	4,460,000