XML 73 R58.htm IDEA: XBRL DOCUMENT
v2.4.1.9

Stock Repurchase Program - Additional Information (Detail) | Oct. 31, 2014 | Apr. 30, 2014
--- | --- | ---
Stock Repurchase Program [Line Items] |  |
Stock Repurchase Program, Number of Shares Authorized to be Repurchased | 22,828 us-gaap_StockRepurchaseProgramNumberOfSharesAuthorizedToBeRepurchased |
Board Of Directors |  |
Stock Repurchase Program [Line Items] |  |
Stock Repurchase Program, Number of Shares Authorized to be Repurchased |  | 500,000 us-gaap_StockRepurchaseProgramNumberOfSharesAuthorizedToBeRepurchased / us-gaap_TitleOfIndividualAxis = us-gaap_BoardOfDirectorsChairmanMember

X
- Details
Name: | rfil_StockRepurchaseProgramLineItems
Namespace Prefix: | rfil_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The number of shares authorized to be repurchased by an entity's Board of Directors under a stock repurchase plan. + References No definition available. + Details
Name: | us-gaap_StockRepurchaseProgramNumberOfSharesAuthorizedToBeRepurchased
Namespace Prefix: | us-gaap_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | instant

X
- Details
Name: | us-gaap_TitleOfIndividualAxis=us-gaap_BoardOfDirectorsChairmanMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |