XML 46 R34.htm IDEA: XBRL DOCUMENT
v3.24.1

Note 2 - Concentrations of Credit Risk (Details Textual) $ in Millions | 3 Months Ended
--- | ---
Jan. 31, 2024 USD ($) | Jan. 31, 2023
Cash, Uninsured Amount | $ 3.7 |
Wireless Carrier [Member] |  |
Number of Customers |  | 1
Wireless Carrier [Member] | Customer Concentration Risk [Member] | Revenue from Contract with Customer Benchmark [Member] |  |
Concentration Risk, Percentage |  | 15.00%
Wireless Carrier [Member] | Customer Concentration Risk [Member] | Accounts Receivable [Member] |  |
Concentration Risk, Percentage |  | 16.00%
Two Distributors [Member] |  |
Number of Customers | 2 |
Two Distributors [Member] | Customer Concentration Risk [Member] | Revenue from Contract with Customer Benchmark [Member] |  |
Concentration Risk, Percentage | 10.00% | 10.00%
Two Distributors [Member] | Customer Concentration Risk [Member] | Accounts Receivable [Member] |  |
Concentration Risk, Percentage |  | 7.00%
Distributor Two [Member] | Customer Concentration Risk [Member] | Accounts Receivable [Member] |  |
Concentration Risk, Percentage | 10.00% |

X
- Definition Represents the number of customers. + References No definition available. + Details
Name: | rfil_NumberOfCustomers
Namespace Prefix: | rfil_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition The amount of cash as of the balance sheet date that is not insured by the Federal Deposit Insurance Corporation. + References No definition available. + Details
Name: | us-gaap_CashUninsuredAmount
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 280 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 42 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482810/280-10-50-42 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 21 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482907/825-10-50-21 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 20 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482907/825-10-50-20 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 275 -SubTopic 10 -Section 50 -Paragraph 18 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482861/275-10-50-18 Reference 5: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 275 -SubTopic 10 -Section 50 -Paragraph 20 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482861/275-10-50-20 + Details
Name: | us-gaap_ConcentrationRiskPercentage1
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | srt_MajorCustomersAxis=rfil_WirelessCarrierMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ConcentrationRiskByTypeAxis=us-gaap_CustomerConcentrationRiskMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ConcentrationRiskByBenchmarkAxis=us-gaap_RevenueFromContractWithCustomerMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ConcentrationRiskByBenchmarkAxis=us-gaap_AccountsReceivableMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_MajorCustomersAxis=rfil_TwoDistributorsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_MajorCustomersAxis=rfil_DistributorTwoMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |