Accumulated Other Comprehensive Loss (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Nov. 30, 2013	Nov. 30, 2012	Aug. 31, 2013
Accumulated Other Comprehensive Income (Loss) [Line Items]
Foreign currency translation adjustments	$ (7,314)		$ (6,423)
Pension obligations, net	(2,773)		(2,817)
Cash flow hedges, net	0		(121)
Total accumulated other comprehensive loss	(10,087)
Increase (Decrease) In Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Beginning balance	(9,361)
Total other comprehensive loss, net of tax	(726)	(866)
Ending balance	(10,087)
Accumulated Translation Adjustment [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Total accumulated other comprehensive loss	(7,314)
Increase (Decrease) In Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Beginning balance	(6,423)
Other comprehensive loss before reclassifications	(891)
Other Comprehensive Income (Loss) Before Reclassifications, Tax	0
Other comprehensive loss before reclassifications, net of tax	(891)
Amounts reclassified from accumulated other comprehensive loss	0
Reclassification From Accumulated Other Comprehensive Income, Current Period, Tax	0
Amounts reclassified from accumulated other comprehensive loss, net of tax	0
Total other comprehensive loss, net of tax	(891)
Ending balance	(7,314)
Accumulated Defined Benefit Plans Adjustment [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Total accumulated other comprehensive loss	(2,773)
Increase (Decrease) In Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Beginning balance	(2,817)
Other comprehensive loss before reclassifications	0
Other Comprehensive Income (Loss) Before Reclassifications, Tax	0
Other comprehensive loss before reclassifications, net of tax	0
Amounts reclassified from accumulated other comprehensive loss	69
Reclassification From Accumulated Other Comprehensive Income, Current Period, Tax	(25)
Amounts reclassified from accumulated other comprehensive loss, net of tax	44
Total other comprehensive loss, net of tax	44
Ending balance	(2,773)
Accumulated Net Gain (Loss) from Designated or Qualifying Cash Flow Hedges [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Total accumulated other comprehensive loss	0
Increase (Decrease) In Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Beginning balance	(121)
Other comprehensive loss before reclassifications	0
Other Comprehensive Income (Loss) Before Reclassifications, Tax	0
Other comprehensive loss before reclassifications, net of tax	0
Amounts reclassified from accumulated other comprehensive loss	98
Reclassification From Accumulated Other Comprehensive Income, Current Period, Tax	23
Amounts reclassified from accumulated other comprehensive loss, net of tax	121
Total other comprehensive loss, net of tax	121
Ending balance	$ 0