Quarterly report pursuant to Section 13 or 15(d)

Acquisitions (Details)

v3.20.4
Acquisitions (Details) - USD ($)
 3 Months Ended
Jan. 07, 2020
Nov. 30, 2020
Nov. 30, 2019
Business Acquisition [Line Items]      
Net Sales   $ 119,430,000 $ 146,674,000
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 $ 33,300,000    
Goodwill, Acquired During Period 11,300,000    
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill 16,100,000    
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Property, Plant, and Equipment 6,700,000    
Net Sales   $ 2,400,000  
Tradenames | HTL Group [Member]      
Business Acquisition [Line Items]      
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill 3,300,000    
Customer relationships | HTL Group [Member]      
Business Acquisition [Line Items]      
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill 12,100,000    
Patents | HTL Group [Member]      
Business Acquisition [Line Items]      
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill $ 700,000