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Warranty Accruals Activity (Detail) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
May 31, 2016
May 31, 2015
May 31, 2016
May 31, 2015
Product Liability Contingency [Line Items]        
Balance at beginning of period $ 12,147 $ 9,188 $ 11,512 $ 9,340
Charged to cost of revenue, net 1,202 2,036 4,086 3,982
Payments (1,205) (994) (3,386) (2,797)
Currency translation effect (12) (32) (80) (327)
Balance at end of period $ 12,132 $ 10,198 $ 12,132 $ 10,198