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Retirement Plan - Additional Information (Detail) (USD $) | 12 Months Ended
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Oct. 31, 2014
Pension and Other Postretirement Benefit Contributions | $ 152,000 us-gaap_PensionAndOtherPostretirementBenefitContributions
Percentage Of Employee Contribution Paid | 3.00%rfil_PercentageOfEmployeeContributionPaid

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- Definition Represents the percentage of employee earnings under contribution plan. + References No definition available. + Details
Name: | rfil_PercentageOfEmployeeContributionPaid
Namespace Prefix: | rfil_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

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- Definition The amount of cash or cash equivalents contributed during the reporting period by the entity to fund its pension plans and its non-pension postretirement benefit plans. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 25 -Subparagraph (g) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3536-108585 + Details
Name: | us-gaap_PensionAndOtherPostretirementBenefitContributions
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration