Annual report pursuant to Section 13 and 15(d)

Acquisitions - Additional Information (Detail)

v3.19.3
Acquisitions - Additional Information (Detail)
$ in Thousands
 12 Months Ended
May 11, 2018
USD ($)
Dec. 02, 2017
USD ($)
Aug. 31, 2019
USD ($)
acquisition
Aug. 31, 2018
USD ($)
Aug. 31, 2017
USD ($)
Dec. 01, 2017
USD ($)
Business Acquisition [Line Items]            
Number of Businesses Acquired | acquisition     2      
Cash paid for business acquisitions, net of cash acquired     $ 0 $ 23,218 $ 0  
Recognition of Goodwill due to Business acquired       12,441    
Net sales     654,758 641,303 $ 616,591  
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   $ 17,400        
Recognition of Goodwill due to Business acquired   $ 10,300        
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill           $ 4,100
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          
Recognition of Goodwill due to Business acquired 2,400          
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill 2,100          
FY18 Acquisitions (Mirage Machines and Equalizer) [Domain]            
Business Acquisition [Line Items]            
Acquisition Costs, Period Cost       1,100    
Net sales     $ 14,100 $ 9,400    
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 1,300          
Trade Names | Mirage Machines [Member] [Member]            
Business Acquisition [Line Items]            
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill           $ 2,300
Trade Names | Equalizer [Member]            
Business Acquisition [Line Items]            
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill $ 800