Contract Termination Costs (Narrative) (Details) $ in Thousands	9 Months Ended
	May 31, 2017 USD ($)
Contract Termination Costs [Abstract]
License agreement period	10 years
Sub-licensee and minimum royalty payments	$ 16,300
Royalty ratio, obligated	33.00%
Royalty payments	$ 5,400
Royalty ratio, excess of the contractual minimums	33.00%
Profit sharing agreement, termination payment	$ 1,500
Contract termination costs	$ 1,500