Accumulated Other Comprehensive Loss (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Feb. 28, 2014	Feb. 28, 2013	Feb. 28, 2014	Feb. 28, 2013
Increase (Decrease) In Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Beginning balance	$ (10,087)		$ (9,361)
Other comprehensive loss before reclassifications	(5,993)		(6,884)
Income tax benefit	76		76
Other comprehensive loss before reclassifications, net of tax	(5,917)		(6,808)
Amounts reclassified from accumulated other comprehensive loss	71		238
Income tax (expense) benefit	(26)		(28)
Amounts reclassified from accumulated other comprehensive loss, net of tax	45		210
Total other comprehensive loss, net of tax	(5,872)	(5,362)	(6,598)	(6,229)
Ending balance	(15,959)		(15,959)
Foreign Currency Translation Adjustments [Member]
Increase (Decrease) In Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Beginning balance	(7,314)		(6,423)
Other comprehensive loss before reclassifications	(5,688)		(6,579)
Income tax benefit	0		0
Other comprehensive loss before reclassifications, net of tax	(5,688)		(6,579)
Amounts reclassified from accumulated other comprehensive loss	0		0
Income tax (expense) benefit	0		0
Amounts reclassified from accumulated other comprehensive loss, net of tax	0		0
Total other comprehensive loss, net of tax	(5,688)		(6,579)
Ending balance	(13,002)		(13,002)
Pension Obligations, net [Member]
Increase (Decrease) In Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Beginning balance	(2,773)		(2,817)
Other comprehensive loss before reclassifications	0		0
Income tax benefit	0		0
Other comprehensive loss before reclassifications, net of tax	0		0
Amounts reclassified from accumulated other comprehensive loss	71		140
Income tax (expense) benefit	(26)		(51)
Amounts reclassified from accumulated other comprehensive loss, net of tax	45		89
Total other comprehensive loss, net of tax	45		89
Ending balance	(2,728)		(2,728)
Net Unrealized Gain/(Loss) on Cash Flow Hedges [Member]
Increase (Decrease) In Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Beginning balance	0		(121)
Other comprehensive loss before reclassifications	(305)		(305)
Income tax benefit	76		76
Other comprehensive loss before reclassifications, net of tax	(229)		(229)
Amounts reclassified from accumulated other comprehensive loss	0		98
Income tax (expense) benefit	0		23
Amounts reclassified from accumulated other comprehensive loss, net of tax	0		121
Total other comprehensive loss, net of tax	(229)		(108)
Ending balance	$ (229)		$ (229)