Quarterly report pursuant to Section 13 or 15(d)

Acquisitions Acquisitions (Details)

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Acquisitions Acquisitions (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
May 11, 2018
Dec. 02, 2017
May 31, 2018
May 31, 2018
May 31, 2017
Dec. 01, 2017
Business Acquisition [Line Items]            
Cash paid for business acquisitions, Net of Cash Acquired       $ 22,326 $ 0  
Goodwill, Acquired During Period       12,085    
Goodwill, Purchase Accounting Adjustments     $ 1,000      
Mirage Machines [Member] [Member]            
Business Acquisition [Line Items]            
Business Acquisition, Date of Acquisition Agreement   Dec. 01, 2017        
Cash paid for business acquisitions, Net of Cash Acquired   $ 17,500        
Goodwill, Acquired During Period   $ 9,800        
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill           $ 4,100
Mirage Machines [Member] [Member] | Tradenames            
Business Acquisition [Line Items]            
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill           2,300
Equalizer [Member]            
Business Acquisition [Line Items]            
Business Acquisition, Date of Acquisition Agreement May 11, 2018          
Cash paid for business acquisitions, Net of Cash Acquired $ 5,800          
Goodwill, Acquired During Period 2,300          
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill 1,900          
Equalizer [Member] | Tradenames            
Business Acquisition [Line Items]            
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill 800          
FY18 Acquisitions (Mirage Machines and Equalizer) [Domain]            
Business Acquisition [Line Items]            
Cash paid for business acquisitions, Net of Cash Acquired       22,326    
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill     6,049 6,049    
Acquisition Costs, Period Cost     300 700    
Net sales     $ 3,100 $ 5,100    
Customer relationships | Mirage Machines [Member] [Member]            
Business Acquisition [Line Items]            
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill           $ 1,800
Customer relationships | Equalizer [Member]            
Business Acquisition [Line Items]            
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill $ 1,100