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Warranty Accruals Activity (Detail) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
May. 31, 2015
May. 31, 2014
May. 31, 2015
May. 31, 2014
Product Liability Contingency [Line Items]        
Balance at beginning of period $ 9,188 $ 10,673 $ 9,340 $ 12,128
Charged to cost of revenue, net 2,036 170 3,982 1,418
Payments (994) (1,208) (2,797) (4,191)
Currency translation effect (32) 83 (327) 363
Balance at end of period $ 10,198 $ 9,718 $ 10,198 $ 9,718