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Document And Entity Information
 3 Months Ended
Jan. 31, 2015
Mar. 09, 2015
Document Information [Line Items]    
Document Type 10-Q  
Amendment Flag false  
Document Period End Date Jan. 31, 2015  
Document Fiscal Year Focus 2015  
Document Fiscal Period Focus Q1  
Entity Registrant Name R F INDUSTRIES LTD  
Entity Central Index Key 0000740664  
Current Fiscal Year End Date --10-31  
Entity Filer Category Smaller Reporting Company  
Trading Symbol RFIL  
Entity Common Stock, Shares Outstanding   8,509,437dei_EntityCommonStockSharesOutstanding