Fair Value Measurements (Details) (USD $) In Thousands, unless otherwise specified	Aug. 31, 2014	Aug. 31, 2013
Assets:
Total Assets	$ 202	$ 6,163
Liabilities:
Total liabilities	(46)	(1,672)
Prepaid expenses and other current assets | Non-recurring | Level 3
Assets:
Assets held for sale	0	2,902
Prepaid expenses and other current assets | Recurring | Level 2
Assets:
Foreign currency exchange forward contracts	202	0
Investments in joint venture partnerships | Non-recurring | Level 3
Assets:
Investment in joint venture partnership	0	3,261
Other accrued liabilities and Other long-term liabilities | Non-recurring | Level 3
Liabilities:
Contract termination costs	0	(1,672)
Other accrued liabilities | Recurring | Level 2
Liabilities:
Foreign currency exchange forward contracts	$ (46)	$ 0