Fair Value of Financial Instruments (Details) - USD ($)	Aug. 31, 2022	Aug. 31, 2021
Fair Value of Financial Instruments
Marketable securities	$ 3,925,000	$ 3,741,000
Level 1
Fair Value of Financial Instruments
Marketable securities	3,925,000	3,741,000
Level 2
Fair Value of Financial Instruments
Marketable securities	0	0
Level 3
Fair Value of Financial Instruments
Marketable securities	$ 0	$ 0