| Document And Entity Information | Jan. 23, 2024 |
| Document Information [Line Items] | |
| Entity, Registrant Name | R F INDUSTRIES, LTD. |
| Document, Type | 8-K |
| Document, Period End Date | Jan. 23, 2024 |
| Entity, Incorporation, State or Country Code | NV |
| Entity, File Number | 0-13301 |
| Entity, Tax Identification Number | 88-0168936 |
| Entity, Address, Address Line One | 16868 Via Del Campo Court |
| Entity, Address, Address Line Two | Suite 200 |
| Entity, Address, City or Town | San Diego |
| Entity, Address, State or Province | CA |
| Entity, Address, Postal Zip Code | 92127 |
| City Area Code | 858 |
| Local Phone Number | 549-6340 |
| Written Communications | false |
| Soliciting Material | false |
| Pre-commencement Tender Offer | false |
| Pre-commencement Issuer Tender Offer | false |
| Title of 12(b) Security | Common Stock |
| Trading Symbol | RFIL |
| Security Exchange Name | NASDAQ |
| Entity, Emerging Growth Company | false |
| Amendment Flag | false |
| Entity, Central Index Key | 0000740664 |
