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Business Acquisition - Additional Information (Detail) (USD $) | 0 Months Ended | 3 Months Ended | 6 Months Ended
--- | --- | --- | ---
Nov. 02, 2014 | Apr. 30, 2015 | Apr. 30, 2014 | Apr. 30, 2015 | Apr. 30, 2014
Business Acquisition Cost Of Acquired Entity Purchase Price value |  | $ 4,150,000 rfil_BusinessAcquisitionCostOfAcquiredEntityPurchasePriceValue |  | $ 4,150,000 rfil_BusinessAcquisitionCostOfAcquiredEntityPurchasePriceValue |
Business Acquisition, Effective Date of Acquisition |  |  |  | Nov. 01, 2014 |
Business Acquisition, Cash Deposited Into Bank |  |  |  | 300,000 rfil_BusinessAcquisitionCashDepositedIntoBank |
Business Acquisition Unregistered Common Stock Shares |  |  |  | 252,381 rfil_BusinessAcquisitionUnregisteredCommonStockShares |
Business Acquisition Unregistered Common Stock Value |  |  |  | 1,060,000 rfil_BusinessAcquisitionUnregisteredCommonStockValue |
Business Acquisition, Percentage of Voting Interests Acquired |  | 100.00%us-gaap_BusinessAcquisitionPercentageOfVotingInterestsAcquired |  | 100.00%us-gaap_BusinessAcquisitionPercentageOfVotingInterestsAcquired |
Payments to Acquire Businesses, Gross | 3,090,000 us-gaap_PaymentsToAcquireBusinessesGross |  |  |  |
Business Combination, Consideration Transferred | 645,000 us-gaap_BusinessCombinationConsiderationTransferred1 |  |  | 3,090,000 us-gaap_BusinessCombinationConsiderationTransferred1 |
Business Acquisition, Share Price |  | $ 4.20 us-gaap_BusinessAcquisitionSharePrice |  | $ 4.20 us-gaap_BusinessAcquisitionSharePrice |
Revenues |  | 8,076,000 us-gaap_Revenues | 5,764,000 us-gaap_Revenues | 14,969,000 us-gaap_Revenues | 11,614,000 us-gaap_Revenues
Comnet Telecom Supply Inc [Member] |  |  |  |  |
Revenues |  | 2,800,000 us-gaap_Revenues / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = rfil_ComnetTelecomSupplyIncMember |  | 5,000,000 us-gaap_Revenues / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = rfil_ComnetTelecomSupplyIncMember |
Portera [Member] |  |  |  |  |
Business Acquisition, Additional Payment In Cash |  |  |  | 1,360,000 rfil_BusinessAcquisitionAdditionalPaymentInCash / us-gaap_BusinessAcquisitionAxis = rfil_PorteraMember |
Salary Payable To President |  |  |  | 210,000 rfil_SalaryPayableToPresident / us-gaap_BusinessAcquisitionAxis = rfil_PorteraMember |
Description For President Annual Bonus |  |  |  | earn an annual bonus of up to 50% of his base salary. |
Payments to Acquire Businesses, Gross |  |  |  | $ 4,150,000 us-gaap_PaymentsToAcquireBusinessesGross / us-gaap_BusinessAcquisitionAxis = rfil_PorteraMember |

X
- Definition Amount of additional cash payments during the period. + References No definition available. + Details
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Namespace Prefix: | rfil_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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- Definition Amount related to business acquisition deposited into bank. + References No definition available. + Details
Name: | rfil_BusinessAcquisitionCashDepositedIntoBank
Namespace Prefix: | rfil_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition The total cost of the acquired entity including the cash paid to shareholders of acquired entities, fair value of debt and equity securities issued to shareholders of acquired entities, the fair value of the liabilities assumed, and direct costs of the acquisition. + References No definition available. + Details
Name: | rfil_BusinessAcquisitionCostOfAcquiredEntityPurchasePriceValue
Namespace Prefix: | rfil_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Value of all classes of common stock held by shareholders. May be all or portion of the number of unregistered Common Stock Shares + References No definition available. + Details
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Balance Type: | na
Period Type: | duration

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- Definition Unregistered common stock value relates to the business acquisition. + References No definition available. + Details
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Namespace Prefix: | rfil_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
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- Definition Description describes the president annual bonus. + References No definition available. + Details
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- Definition This element refers amount of salary payable to president. + References No definition available. + Details
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Balance Type: | debit
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- Definition Date when the acquirer obtains control of the acquiree, in CCYY-MM-DD format. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 10 -Section 25 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=34752592&loc=d3e845-128460 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Acquisition Date -URI http://asc.fasb.org/extlink&oid=6919109 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 10 -Section 25 -Paragraph 7 -URI http://asc.fasb.org/extlink&oid=34752592&loc=d3e848-128460 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=25497992&loc=d3e1392-128463 + Details
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- Definition Percentage of voting equity interests acquired at the acquisition date in the business combination. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=25497992&loc=d3e1392-128463 + Details
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- Definition Price of a single share of a number of saleable stocks paid or offered to be paid in a business combination. + References No definition available. + Details
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- Definition Amount of consideration transferred, consisting of acquisition-date fair value of assets transferred by the acquirer, liabilities incurred by the acquirer, and equity interest issued by the acquirer. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 30 -Paragraph 7 -URI http://asc.fasb.org/extlink&oid=6911251&loc=d3e6578-128477 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 30 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=6911251&loc=d3e6613-128477 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=35744584&loc=d3e6927-128479 + Details
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- Definition The cash outflow associated with the acquisition of business during the period. The cash portion only of the acquisition price. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Investing Activities -URI http://asc.fasb.org/extlink&oid=6516133 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 13 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3213-108585 + Details
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- Definition Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. Includes, but is not limited to, investment and interest income before deduction of interest expense when recognized as a component of revenue, and sales and trading gain (loss). + 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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- Details
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- Details
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