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Sales by Geographic Area (Detail) (USD $) In Thousands, unless otherwise specified | 3 Months Ended | 6 Months Ended
--- | --- | ---
Apr. 30, 2015 | Apr. 30, 2014 | Apr. 30, 2015 | Apr. 30, 2014
Revenue, Major Customer [Line Items] |  |  |  |
Sales revenue | $ 8,076 us-gaap_SalesRevenueNet | $ 5,764 us-gaap_SalesRevenueNet | $ 14,969 us-gaap_SalesRevenueNet | $ 11,614 us-gaap_SalesRevenueNet
United States |  |  |  |
Revenue, Major Customer [Line Items] |  |  |  |
Sales revenue | 7,719 us-gaap_SalesRevenueNet / rfil_AllCountryAxis = country_US | 5,314 us-gaap_SalesRevenueNet / rfil_AllCountryAxis = country_US | 14,314 us-gaap_SalesRevenueNet / rfil_AllCountryAxis = country_US | 10,762 us-gaap_SalesRevenueNet / rfil_AllCountryAxis = country_US
Canada |  |  |  |
Revenue, Major Customer [Line Items] |  |  |  |
Sales revenue | 112 us-gaap_SalesRevenueNet / rfil_AllCountryAxis = stpr_CA | 107 us-gaap_SalesRevenueNet / rfil_AllCountryAxis = stpr_CA | 226 us-gaap_SalesRevenueNet / rfil_AllCountryAxis = stpr_CA | 209 us-gaap_SalesRevenueNet / rfil_AllCountryAxis = stpr_CA
Israel |  |  |  |
Revenue, Major Customer [Line Items] |  |  |  |
Sales revenue | 135 us-gaap_SalesRevenueNet / rfil_AllCountryAxis = stpr_IL | 157 us-gaap_SalesRevenueNet / rfil_AllCountryAxis = stpr_IL | 188 us-gaap_SalesRevenueNet / rfil_AllCountryAxis = stpr_IL | 222 us-gaap_SalesRevenueNet / rfil_AllCountryAxis = stpr_IL
Mexico |  |  |  |
Revenue, Major Customer [Line Items] |  |  |  |
Sales revenue | 95 us-gaap_SalesRevenueNet / rfil_AllCountryAxis = country_MX | 136 us-gaap_SalesRevenueNet / rfil_AllCountryAxis = country_MX | 189 us-gaap_SalesRevenueNet / rfil_AllCountryAxis = country_MX | 258 us-gaap_SalesRevenueNet / rfil_AllCountryAxis = country_MX
All other |  |  |  |
Revenue, Major Customer [Line Items] |  |  |  |
Sales revenue | 15 us-gaap_SalesRevenueNet / rfil_AllCountryAxis = rfil_AllOtherMember | 50 us-gaap_SalesRevenueNet / rfil_AllCountryAxis = rfil_AllOtherMember | 52 us-gaap_SalesRevenueNet / rfil_AllCountryAxis = rfil_AllOtherMember | 163 us-gaap_SalesRevenueNet / rfil_AllCountryAxis = rfil_AllOtherMember
Foreign Countries, total |  |  |  |
Revenue, Major Customer [Line Items] |  |  |  |
Sales revenue | $ 357 us-gaap_SalesRevenueNet / rfil_AllCountryAxis = rfil_ForeignCountriesTotalMember | $ 450 us-gaap_SalesRevenueNet / rfil_AllCountryAxis = rfil_ForeignCountriesTotalMember | $ 655 us-gaap_SalesRevenueNet / rfil_AllCountryAxis = rfil_ForeignCountriesTotalMember | $ 852 us-gaap_SalesRevenueNet / rfil_AllCountryAxis = rfil_ForeignCountriesTotalMember

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- Definition Total revenue from sale of goods and services rendered during the reporting period, in the normal course of business, reduced by sales returns and allowances, and sales discounts. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.1) -URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 1 -Article 5 + Details
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