XML 85 R70.htm IDEA: XBRL DOCUMENT
v3.6.0.2

Subsequent events - Additional Information (Detail) - USD ($) | 1 Months Ended | 12 Months Ended |
--- | --- | --- | ---
Jan. 26, 2017 | Oct. 31, 2016 | Dec. 08, 2016
San Diego, California [Member] |  |  |
Subsequent Event [Line Items] |  |  |
Lease Expiration Date |  | Mar. 31, 2017 |
San Diego, California [Member] | Scenario, Forecast [Member] |  |  |
Subsequent Event [Line Items] |  |  |
Lease Expiration Date | Jul. 31, 2022 |  |
Increase Decrease In Monthly Operating Lease Rent Expenses | $ 2,596 |  |
San Diego, California [Member] | Minimum [Member] | Scenario, Forecast [Member] |  |  |
Subsequent Event [Line Items] |  |  |
Operating Leases, Rent Expense | 20,125 |  |
San Diego, California [Member] | Maximum [Member] | Scenario, Forecast [Member] |  |  |
Subsequent Event [Line Items] |  |  |
Operating Leases, Rent Expense | $ 22,721 |  |
Subsequent Event |  |  |
Subsequent Event [Line Items] |  |  |
Dividends Payable, Amount Per Share |  |  | $ 0.02

X
- Definition This elements represent the amount of monthly operating lease rent increase (decrease ) during the period. + References No definition available. + Details
Name: | rfil_IncreaseDecreaseInMonthlyOperatingLeaseRentExpenses
Namespace Prefix: | rfil_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The per share amount of a dividend declared, but not paid, as of the financial reporting date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=6367179&loc=d3e4304-108586 + Details
Name: | us-gaap_DividendsPayableAmountPerShare
Namespace Prefix: | us-gaap_
Data Type: | num:perShareItemType
Balance Type: | na
Period Type: | instant

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- Definition Amount of rent expense incurred for leased assets, including but not limited to, furniture and equipment, that is not directly or indirectly associated with the manufacture, sale or creation of a product or product line. + References No definition available. + Details
Name: | us-gaap_LeaseAndRentalExpense
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Date which lease or group of leases is set to expire, in CCYY-MM-DD format. + References No definition available. + Details
Name: | us-gaap_LeaseExpirationDate1
Namespace Prefix: | us-gaap_
Data Type: | xbrli:dateItemType
Balance Type: | na
Period Type: | duration

X
- Definition Detail information of subsequent event by type. User is expected to use existing line items from elsewhere in the taxonomy as the primary line items for this disclosure, which is further associated with dimension and member elements pertaining to a subsequent event. + References No definition available. + Details
Name: | us-gaap_SubsequentEventLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_StatementGeographicalAxis=rfil_SanDiegoCaliforniaMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementScenarioAxis=us-gaap_ScenarioForecastMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RangeAxis=us-gaap_MinimumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RangeAxis=us-gaap_MaximumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_SubsequentEventTypeAxis=us-gaap_SubsequentEventMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |