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Inventories and major vendors - Additional Information (Detail)	3 Months Ended	6 Months Ended
	Apr. 30, 2015	Apr. 30, 2015	Apr. 30, 2014
Inventory [Line Items]
Purchases of connector products, percentage	7.00%us-gaap_ConcentrationRiskPercentage1	13.00%us-gaap_ConcentrationRiskPercentage1
Vendor One
Inventory [Line Items]
Purchases of connector products, percentage		13.00%us-gaap_ConcentrationRiskPercentage1 / us-gaap_MajorCustomersAxis = rfil_VendorOneMember	18.00%us-gaap_ConcentrationRiskPercentage1 / us-gaap_MajorCustomersAxis = rfil_VendorOneMember
Vendor Two
Inventory [Line Items]
Purchases of connector products, percentage		11.00%us-gaap_ConcentrationRiskPercentage1 / us-gaap_MajorCustomersAxis = rfil_VendorTwoMember	13.00%us-gaap_ConcentrationRiskPercentage1 / us-gaap_MajorCustomersAxis = rfil_VendorTwoMember
Vendor Three
Inventory [Line Items]
Purchases of connector products, percentage		7.00%us-gaap_ConcentrationRiskPercentage1 / us-gaap_MajorCustomersAxis = rfil_VendorThreeMember	10.00%us-gaap_ConcentrationRiskPercentage1 / us-gaap_MajorCustomersAxis = rfil_VendorThreeMember

X

- Definition

For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 825

-SubTopic 10

-Section 50

-Paragraph 21

-Subparagraph (a)

-URI http://asc.fasb.org/extlink&oid=35750535&loc=d3e13537-108611



Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 275

-SubTopic 10

-Section 50

-Paragraph 20

-URI http://asc.fasb.org/extlink&oid=6927468&loc=d3e6404-108592



Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 825

-SubTopic 10

-Section 50

-Paragraph 20

-URI http://asc.fasb.org/extlink&oid=35750535&loc=d3e13531-108611



Reference 4: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 275

-SubTopic 10

-Section 50

-Paragraph 18

-URI http://asc.fasb.org/extlink&oid=6927468&loc=d3e6351-108592

+ Details

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Data Type:	num:percentItemType
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- Details

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- Details

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X

- Details

Name:	us-gaap_MajorCustomersAxis=rfil_VendorThreeMember
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X

- Details

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Period Type: