Annual report pursuant to Section 13 and 15(d)

Acquisitions - Additional Information (Details)

v3.20.2
Acquisitions - Additional Information (Details) - USD ($)
$ in Thousands
 12 Months Ended
Jan. 07, 2020
May 11, 2018
Dec. 02, 2017
Aug. 31, 2020
Aug. 31, 2019
Aug. 31, 2018
Dec. 01, 2017
Business Acquisition [Line Items]              
Cash paid for business acquisitions, net of cash acquired       $ 33,298 $ 0 $ 23,218  
Net sales       493,292 654,758 641,303  
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       5,100 $ 14,100 $ 9,400  
HTL Group [Member]              
Business Acquisition [Line Items]              
Business Acquisition, Date of Acquisition Agreement Jan. 07, 2020            
Cash paid for business acquisitions, net of cash acquired $ 33,300            
Recognition of Goodwill due to Business acquired 11,300            
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill 16,100            
Net sales       $ 6,300      
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Property, Plant, and Equipment 6,700            
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          
Customer Relationships | HTL Group [Member]              
Business Acquisition [Line Items]              
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill 12,100            
Patents | HTL Group [Member]              
Business Acquisition [Line Items]              
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill 700            
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          
Trade Names | HTL Group [Member]              
Business Acquisition [Line Items]              
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill $ 3,300