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Components of Intangible Assets (Parenthetical) (Detail)	6 Months Ended	12 Months Ended
	Apr. 30, 2013	Oct. 31, 2012
Non-compete agreements (estimated life 5 years)
Intangible Assets [Line Items]
Amortizable intangible assets, estimated life	5 years	5 years
Customer relationships (estimated life 9.6 years)
Intangible Assets [Line Items]
Amortizable intangible assets, estimated life	9 years 7 months 6 days	9 years 7 months 6 days
Backlog (estimated life 6 months)
Intangible Assets [Line Items]
Amortizable intangible assets, estimated life	6 months	6 months

X

- Details

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

X

- Definition

Useful life of finite-lived intangible assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

No definition available.

+ Details

Name:	us-gaap_FiniteLivedIntangibleAssetUsefulLife
Namespace Prefix:	us-gaap_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration