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Components of purchase price at fair value (Detail) - USD ($)
12 Months Ended
Jun. 02, 2015
May 19, 2015
Nov. 02, 2014
Oct. 31, 2016
Cash consideration paid       $ 2,100,000
Rel-Tech Electronics, Inc        
Cash consideration paid $ 2,100,000     3,100,000
RF Industries, Ltd. common shares issued 200,000      
Earn-out 610,000      
Total purchase price $ 2,910,000      
CompPro Product Line        
Cash consideration paid   $ 700,000    
Total purchase price   $ 700,000    
Comnet Telecom Supply Inc        
Cash consideration paid     $ 3,090,000 3,090,000
RF Industries, Ltd. common shares issued     1,060,000  
Earn-out     1,235,000  
Total purchase price     $ 5,385,000 $ 4,150,000