Income Taxes - Schedule (Details)	3 Months Ended		9 Months Ended
	May 31, 2016	May 31, 2015	May 31, 2016	May 31, 2015
Effective Income Tax Rate Reconciliation, Percent [Abstract]
Federal statutory rate	35.00%	35.00%	35.00%	35.00%
State taxes, net of credits	1.70%	4.70%	1.40%	1.20%
Foreign income taxed at different rates	(2.40%)	(0.50%)	(6.10%)	(7.40%)
Non-deductible officers’ compensation	0.70%	(0.60%)	(1.30%)	(0.20%)
Noncontrolling interests	(1.60%)	(0.80%)	3.00%	0.40%
Research and development credits	(2.10%)	7.40%	1.60%	0.30%
Tax return to provision adjustment	(1.10%)	(6.50%)	0.40%	(0.20%)
Valuation allowance on deferred tax assets	(31.20%)	(54.30%)	(33.50%)	(21.50%)
Non-deductible goodwill	0.30%	(5.00%)	(0.60%)	(2.80%)
Unrecognized tax benefits	1.40%	(4.00%)	(1.40%)	(0.60%)
Other non-deductible expenses	0.70%	2.70%	(1.80%)	(0.40%)
Other	(0.60%)	(0.20%)	0.80%	0.10%
Effective tax rate	0.80%	(22.10%)	(2.50%)	3.90%