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Acquisitions - Additional Information (Detail) - USD ($)
$ in Millions
 3 Months Ended 12 Months Ended
Jan. 12, 2018
Apr. 25, 2017
Apr. 13, 2017
Dec. 30, 2016
Oct. 31, 2018
Oct. 31, 2018
Oct. 31, 2017
Oct. 29, 2016
Business Acquisition [Line Items]                
Payments to acquire business, net of cash acquired           $ 60.0 $ 156.4 $ 31.7
Goodwill         $ 161.8 161.8 133.2 84.5
Net sales           2,381.3 2,267.8 1,926.0
Operating income           27.8 $ 82.7 $ 72.4
Lance Camper Mfg. Corp. [Member]                
Business Acquisition [Line Items]                
Percentage of voting interest acquired 100.00%              
Business acquisition, purchase price paid $ 67.9              
Cash acquired from acquisition 6.0              
Payments to acquire business, net of cash acquired 61.9              
Additional amount payable to selling shareholders         10.0 10.0    
Deferred purchase price payable         5.0 5.0    
Goodwill 27.5              
Net sales           106.9    
Operating income           9.6    
Business acquisition, purchase price $ 67.9              
Ferrara Fire Apparatus, Inc. [Member]                
Business Acquisition [Line Items]                
Percentage of voting interest acquired   100.00%            
Cash acquired from acquisition   $ 3.0            
Payments to acquire business, net of cash acquired   94.8            
Goodwill   31.7            
Net sales           122.9    
Operating income           7.7    
Business acquisition, purchase price   97.8            
Subsequent adjustment cash received from seller based on level of net working capital   2.3            
Midwest Automotive Designs [Member]                
Business Acquisition [Line Items]                
Payments to acquire business, net of cash acquired     $ 34.9          
Goodwill     12.9          
Net sales           67.0    
Operating income           5.3    
Business acquisition, purchase price   $ 34.9 34.9          
Subsequent adjustment cash received from seller based on level of net working capital     $ 0.5          
Renegade R V [Member]                
Business Acquisition [Line Items]                
Percentage of voting interest acquired       100.00%        
Cash acquired from acquisition       $ 1.6        
Payments to acquire business, net of cash acquired       20.9        
Goodwill       4.2        
Business acquisition, purchase price       22.5        
Payment for net working capital       $ 0.3        
Increase in intangible assets         1.3      
Increase in deferred income tax liabilities         2.1      
Net increase in goodwill         $ 0.8      
Net sales           133.2    
Operating income           $ 16.3