Income Taxes (Details Textual) - USD ($)	3 Months Ended		6 Months Ended		12 Months Ended
	Feb. 28, 2019	Feb. 28, 2018	Feb. 28, 2019	Feb. 28, 2018	Aug. 31, 2018
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent	22.80%	30.20%	26.80%	34.40%
Deferred Income Tax Expense (Benefit)			$ 184,000
Effective Income Tax Rate Reconciliation, Percent			21.00%		35.00%
Income Tax Expense (Benefit)	$ 580,000	$ 571,000	$ 1,425,000	$ 1,317,000
Deferred Tax Assets, Valuation Allowance	$ 498,000		$ 498,000