Income Taxes (Details) - USD ($)	3 Months Ended
	Nov. 30, 2020	Nov. 30, 2019
Income Taxes
Income Tax Expense (Benefit)	$ 298,000	$ 1,076,000
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent	25.90%	36.00%
Effective Income Tax Rate Reconciliation, Percent	21.00%