Consolidated Balance Sheets (Current Period Unaudited) (Parentheticals) - USD ($)	May 31, 2023	Aug. 31, 2022
Doubtful accounts and allowances	$ 439,000	$ 439,000
Preferred Stock, No Par Value (in dollars per share)	$ 0	$ 0
Preferred Stock, Shares Authorized (in shares)	10,000	10,000
Preferred Stock, Shares Issued (in shares)	0
Preferred Stock, Shares Outstanding (in shares)	0	0
Common Stock, Par or Stated Value Per Share (in dollars per share)	$ 0.02	$ 0.02
Common Stock, Shares Authorized (in shares)	15,000,000	15,000,000
Common Stock, Shares, Outstanding (in shares)	9,369,923	9,232,483
Common Stock, Shares, Issued (in shares)	9,369,923	9,232,483