Annual report pursuant to Section 13 and 15(d)

Reconciliation of Income Taxes at Federal Statutory Rate to Effective Tax Rate (Detail)

v3.5.0.2
Reconciliation of Income Taxes at Federal Statutory Rate to Effective Tax Rate (Detail) - USD ($)
$ in Thousands
 12 Months Ended
Aug. 31, 2016
Aug. 31, 2015
Aug. 31, 2014
Income Tax Disclosure [Abstract]      
Deferred Tax Assets Operating Loss And Tax Credit Carryforwards $ 36,761 $ 19,419  
Federal statutory rate 35.00% 35.00% 35.00%
State income taxes, net of federal effect 1.20% (0.20%) 0.80%
Net effects of foreign tax rate differential and credits 1.60% (58.40%) (10.50%)
Domestic manufacturing deduction 0.30% (5.10%) (1.00%)
Foreign Branch Currency Losses 4.90% 0.00% 0.00%
Goodwill impairment (27.00%) 78.60% 0.00%
Valuation allowance additions and releases (0.70%) 15.50% (8.00%)
Changes in liability for unrecognized tax benefits (0.90%) (42.10%) 3.20%
Change in income tax accounting method, net 0.00% 0.00% (5.60%)
Business divestiture 3.90% 0.00% 3.00%
Other items 1.00% (1.60%) 1.80%
Effective income tax rate 19.30% 21.70% 18.70%
Deferred Tax Assets, Tax Deferred Expense, Compensation and Benefits $ 25,086 $ 27,047  
Deferred Tax Assets, Tax Deferred Expense, Compensation and Benefits, Postretirement Benefits 8,727 6,778  
Deferred Tax Assets, Inventory 3,044 3,253  
Deferred Tax Assets, Tax Deferred Expense, Reserves and Accruals, Other 8,317 11,976  
Deferred Tax Assets, Gross 81,935 68,473  
Deferred Tax Assets, Valuation Allowance 8,147 8,053  
Deferred Tax Assets, Net of Valuation Allowance 73,788 60,420  
Deferred Tax Liabilities Depreciation And Amortization 83,020 110,763  
Deferred Tax Liabilities, Other 5,493 4,539  
Deferred Tax Liabilities, Gross 88,513 115,302  
Deferred Tax Assets, Net $ (14,725) $ (54,882)