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Business Acquisition - Additional Information (Detail) (USD $)	0 Months Ended	3 Months Ended
	Nov. 02, 2014	Jan. 31, 2015
Business Acquisition Cost Of Acquired Entity Purchase Price value		$ 4,150,000rfil_BusinessAcquisitionCostOfAcquiredEntityPurchasePriceValue
Business Acquisition, Effective Date of Acquisition		Nov. 01, 2014
Business Acquisition, Cash Deposited Into Bank		300,000rfil_BusinessAcquisitionCashDepositedIntoBank
Business Acquisition Unregistered Common Stock Shares		252,381rfil_BusinessAcquisitionUnregisteredCommonStockShares
Business Acquisition Unregistered Common Stock Value		1,060,000rfil_BusinessAcquisitionUnregisteredCommonStockValue
Business Acquisition, Percentage of Voting Interests Acquired		100.00%us-gaap_BusinessAcquisitionPercentageOfVotingInterestsAcquired
Payments to Acquire Businesses, Gross	3,090,000us-gaap_PaymentsToAcquireBusinessesGross
Business Combination, Consideration Transferred	645,000us-gaap_BusinessCombinationConsiderationTransferred1	3,090,000us-gaap_BusinessCombinationConsiderationTransferred1
Business Acquisition, Share Price		$ 4.20us-gaap_BusinessAcquisitionSharePrice
Revenues		2,200,000us-gaap_Revenues
Portera [Member]
Business Acquisition, Additional Payment In Cash		1,360,000rfil_BusinessAcquisitionAdditionalPaymentInCash / us-gaap_BusinessAcquisitionAxis = rfil_PorteraMember
Salary Payable To President		210,000rfil_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		$ 4,150,000us-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

X

- 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

Unregistered common stock shares relating to business acquied.

+ References

No definition available.

+ Details

Name:	rfil_BusinessAcquisitionUnregisteredCommonStockShares
Namespace Prefix:	rfil_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Unregistered common stock value relates to the business acquisition.

+ References

No definition available.

+ Details

Name:	rfil_BusinessAcquisitionUnregisteredCommonStockValue
Namespace Prefix:	rfil_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- Definition

Description describes the president annual bonus.

+ References

No definition available.

+ Details

Name:	rfil_DescriptionForPresidentAnnualBonus
Namespace Prefix:	rfil_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

This element refers amount of salary payable to president.

+ References

No definition available.

+ Details

Name:	rfil_SalaryPayableToPresident
Namespace Prefix:	rfil_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- 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

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X

- 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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Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

X

- 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

Name:	us-gaap_BusinessAcquisitionSharePrice
Namespace Prefix:	us-gaap_
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Balance Type:	na
Period Type:	instant

X

- 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



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-Publisher FASB

-Name Accounting Standards Codification

-Topic 805

-SubTopic 30

-Section 30

-Paragraph 8

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-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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Namespace Prefix:	us-gaap_
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Balance Type:	credit
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X

- 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

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Balance Type:	credit
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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



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-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 03

-Paragraph 1

-Article 5

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- Details

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