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Net Sales, Income (Loss) Before Provision for Income Taxes and Other Related Segment Information (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
Segment Reporting Information [Line Items]
Net sales	$ 8,076us-gaap_SalesRevenueNet	$ 5,764us-gaap_SalesRevenueNet	$ 14,969us-gaap_SalesRevenueNet	$ 11,614us-gaap_SalesRevenueNet
Income from continuing operations before provision for income taxes	733us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	770us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	764us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	1,116us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments
Depreciation and amortization	199us-gaap_DepreciationAndAmortization	145us-gaap_DepreciationAndAmortization	389us-gaap_DepreciationAndAmortization	294us-gaap_DepreciationAndAmortization
RF Connector and Cable Assembly
Segment Reporting Information [Line Items]
Net sales	3,339us-gaap_SalesRevenueNet / us-gaap_StatementBusinessSegmentsAxis = rfil_RfConnectorsAndCableAssemblyMember	3,312us-gaap_SalesRevenueNet / us-gaap_StatementBusinessSegmentsAxis = rfil_RfConnectorsAndCableAssemblyMember	6,040us-gaap_SalesRevenueNet / us-gaap_StatementBusinessSegmentsAxis = rfil_RfConnectorsAndCableAssemblyMember	6,284us-gaap_SalesRevenueNet / us-gaap_StatementBusinessSegmentsAxis = rfil_RfConnectorsAndCableAssemblyMember
Income from continuing operations before provision for income taxes	448us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments / us-gaap_StatementBusinessSegmentsAxis = rfil_RfConnectorsAndCableAssemblyMember	590us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments / us-gaap_StatementBusinessSegmentsAxis = rfil_RfConnectorsAndCableAssemblyMember	404us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments / us-gaap_StatementBusinessSegmentsAxis = rfil_RfConnectorsAndCableAssemblyMember	958us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments / us-gaap_StatementBusinessSegmentsAxis = rfil_RfConnectorsAndCableAssemblyMember
Depreciation and amortization	41us-gaap_DepreciationAndAmortization / us-gaap_StatementBusinessSegmentsAxis = rfil_RfConnectorsAndCableAssemblyMember	47us-gaap_DepreciationAndAmortization / us-gaap_StatementBusinessSegmentsAxis = rfil_RfConnectorsAndCableAssemblyMember	82us-gaap_DepreciationAndAmortization / us-gaap_StatementBusinessSegmentsAxis = rfil_RfConnectorsAndCableAssemblyMember	96us-gaap_DepreciationAndAmortization / us-gaap_StatementBusinessSegmentsAxis = rfil_RfConnectorsAndCableAssemblyMember
Medical Cabling and Interconnector
Segment Reporting Information [Line Items]
Net sales	485us-gaap_SalesRevenueNet / us-gaap_StatementBusinessSegmentsAxis = rfil_MedicalCablingAndInterconnectorMember	712us-gaap_SalesRevenueNet / us-gaap_StatementBusinessSegmentsAxis = rfil_MedicalCablingAndInterconnectorMember	1,060us-gaap_SalesRevenueNet / us-gaap_StatementBusinessSegmentsAxis = rfil_MedicalCablingAndInterconnectorMember	1,463us-gaap_SalesRevenueNet / us-gaap_StatementBusinessSegmentsAxis = rfil_MedicalCablingAndInterconnectorMember
Income from continuing operations before provision for income taxes	130us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments / us-gaap_StatementBusinessSegmentsAxis = rfil_MedicalCablingAndInterconnectorMember	193us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments / us-gaap_StatementBusinessSegmentsAxis = rfil_MedicalCablingAndInterconnectorMember	276us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments / us-gaap_StatementBusinessSegmentsAxis = rfil_MedicalCablingAndInterconnectorMember	333us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments / us-gaap_StatementBusinessSegmentsAxis = rfil_MedicalCablingAndInterconnectorMember
Depreciation and amortization	5us-gaap_DepreciationAndAmortization / us-gaap_StatementBusinessSegmentsAxis = rfil_MedicalCablingAndInterconnectorMember	7us-gaap_DepreciationAndAmortization / us-gaap_StatementBusinessSegmentsAxis = rfil_MedicalCablingAndInterconnectorMember	10us-gaap_DepreciationAndAmortization / us-gaap_StatementBusinessSegmentsAxis = rfil_MedicalCablingAndInterconnectorMember	15us-gaap_DepreciationAndAmortization / us-gaap_StatementBusinessSegmentsAxis = rfil_MedicalCablingAndInterconnectorMember
Corporate
Segment Reporting Information [Line Items]
Net sales		0us-gaap_SalesRevenueNet / us-gaap_StatementBusinessSegmentsAxis = us-gaap_CorporateMember	0us-gaap_SalesRevenueNet / us-gaap_StatementBusinessSegmentsAxis = us-gaap_CorporateMember	0us-gaap_SalesRevenueNet / us-gaap_StatementBusinessSegmentsAxis = us-gaap_CorporateMember
Income from continuing operations before provision for income taxes	10us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments / us-gaap_StatementBusinessSegmentsAxis = us-gaap_CorporateMember	6us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments / us-gaap_StatementBusinessSegmentsAxis = us-gaap_CorporateMember	15us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments / us-gaap_StatementBusinessSegmentsAxis = us-gaap_CorporateMember	11us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments / us-gaap_StatementBusinessSegmentsAxis = us-gaap_CorporateMember
Depreciation and amortization		0us-gaap_DepreciationAndAmortization / us-gaap_StatementBusinessSegmentsAxis = us-gaap_CorporateMember	0us-gaap_DepreciationAndAmortization / us-gaap_StatementBusinessSegmentsAxis = us-gaap_CorporateMember	0us-gaap_DepreciationAndAmortization / us-gaap_StatementBusinessSegmentsAxis = us-gaap_CorporateMember
Custom Cabling Manufacturing and Assembly
Segment Reporting Information [Line Items]
Net sales	4,252us-gaap_SalesRevenueNet / us-gaap_StatementBusinessSegmentsAxis = rfil_CustomCablingManufacturingAndAssemblyMember	1,740us-gaap_SalesRevenueNet / us-gaap_StatementBusinessSegmentsAxis = rfil_CustomCablingManufacturingAndAssemblyMember	7,869us-gaap_SalesRevenueNet / us-gaap_StatementBusinessSegmentsAxis = rfil_CustomCablingManufacturingAndAssemblyMember	3,867us-gaap_SalesRevenueNet / us-gaap_StatementBusinessSegmentsAxis = rfil_CustomCablingManufacturingAndAssemblyMember
Income from continuing operations before provision for income taxes	145us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments / us-gaap_StatementBusinessSegmentsAxis = rfil_CustomCablingManufacturingAndAssemblyMember	(19)us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments / us-gaap_StatementBusinessSegmentsAxis = rfil_CustomCablingManufacturingAndAssemblyMember	69us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments / us-gaap_StatementBusinessSegmentsAxis = rfil_CustomCablingManufacturingAndAssemblyMember	(186)us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments / us-gaap_StatementBusinessSegmentsAxis = rfil_CustomCablingManufacturingAndAssemblyMember
Depreciation and amortization	$ 153us-gaap_DepreciationAndAmortization / us-gaap_StatementBusinessSegmentsAxis = rfil_CustomCablingManufacturingAndAssemblyMember	$ 91us-gaap_DepreciationAndAmortization / us-gaap_StatementBusinessSegmentsAxis = rfil_CustomCablingManufacturingAndAssemblyMember	$ 297us-gaap_DepreciationAndAmortization / us-gaap_StatementBusinessSegmentsAxis = rfil_CustomCablingManufacturingAndAssemblyMember	$ 183us-gaap_DepreciationAndAmortization / us-gaap_StatementBusinessSegmentsAxis = rfil_CustomCablingManufacturingAndAssemblyMember

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