Quarterly report pursuant to Section 13 or 15(d)

Divestiture Activities (Details)

v3.8.0.1
Divestiture Activities (Details) - USD ($)
$ in Thousands
 3 Months Ended 6 Months Ended
Feb. 28, 2018
Feb. 28, 2017
Feb. 28, 2018
Feb. 28, 2017
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]        
Proceeds from sale of business, net of transaction costs     $ 8,780 $ 0
Viking [Domain]        
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]        
Proceeds from sale of business, net of transaction costs     8,780  
Transaction Costs in connection with Disposal of Business     1,600  
Divestiture Charges $ 12,400      
Business Exit Costs 3,000      
Discrete Income Tax Expense $ 9,400      
Viking [Member]        
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]        
Disposal Group, Not Discontinued Operation, annual revenue   $ 6,000 $ 2,700 $ 11,500