Profit Sharing Plan (Details Textual) - USD ($)	12 Months Ended
	Aug. 31, 2018	Aug. 31, 2017
Defined Contribution Plan, Employer Matching Contribution, Percent of Employees' Gross Pay	50.00%
Defined Contribution Plan, Administrative Expense	$ 282,000	$ 236,000
Defined Contribution Plan, Description	five-year
Employee Contributions [Member]
Defined Contribution Plan, Employer Matching Contribution, Percent of Match	4.00%
Deferred Profit Sharing [Member]
Defined Contribution Plan, Employer Matching Contribution, Percent of Match	15.00%