Shareholders' Equity - Additional Information (Details) - USD ($)	12 Months Ended
	Aug. 31, 2022	Aug. 31, 2021
Shareholders' Equity
Antidilutive securities excluded from computation of earnings per share, amount	40,000	40,000
Convertible preferred stock (in shares)	36,000	36,000
Percentage of preferred stock, dividend rate	8.50%
Amount of dividend rate (in dollars per share)	$ 25
Total cash purchase price	$ 900,000
Conversion price	$ 22.50
Final settlement to Holders of preferred stock during dissolution	$25.00 per share plus all unpaid dividends
Series A cumulative convertible preferred stock
Shareholders' Equity
Convertible preferred stock (in shares)	36,000