XML 68 R55.htm IDEA: XBRL DOCUMENT v3.5.0.1

Accrued expenses - Additional Information (Detail)	Apr. 30, 2016 USD ($)
Other Noncurrent Liabilities [Member]
Schedule Of Accrued Liabilities [Line Items]
Accrued Earn Out Liability Non Current	$ 377,000

X

- Definition

It represents accrued earn out liability non current portion.

+ References

No definition available.

+ Details

Name:	rfil_AccruedEarnOutLiabilityNonCurrent
Namespace Prefix:	rfil_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Definition

Schedule of Accrued Liabilities [Line Items]

+ References

No definition available.

+ Details

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

X

- Details

Name:	us-gaap_BalanceSheetLocationAxis=us-gaap_OtherNoncurrentLiabilitiesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: