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Inventories and major vendors - Additional Information (Detail) | 9 Months Ended
--- | ---
Jul. 31, 2013 | Jul. 31, 2012
Schedule of Inventory [Line Items] |  |
Number of major vendors | 3 | 2
Vendor One |  |
Schedule of Inventory [Line Items] |  |
Purchases of connector products, percentage | 33.00% | 17.00%
Vendor Two |  |
Schedule of Inventory [Line Items] |  |
Purchases of connector products, percentage | 14.00% | 13.00%
Vendor Three |  |
Schedule of Inventory [Line Items] |  |
Purchases of connector products, percentage | 10.00% |

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- Definition Number of vendors + References No definition available. + Details
Name: | rfil_NumberOfVendors
Namespace Prefix: | rfil_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

X
- Definition Percentage of Purchases from Major Suppliers + References No definition available. + Details
Name: | rfil_PercentageOfPurchasesFromMajorSuppliers
Namespace Prefix: | rfil_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | rfil_ScheduleOfInventoryLineItems
Namespace Prefix: | rfil_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration