| Document and Entity Information Document | Dec. 04, 2020 |
| Document Information [Line Items] | |
| Document Type | 8-K |
| Document Creation Date | Dec. 4, 2020 |
| Document Period End Date | Dec. 4, 2020 |
| Amendment Flag | false |
| Entity Registrant Name | Net 1 UEPS Technologies, Inc. |
| Entity Address, Address Line One | President Place, 4th Floor, Cnr. |
| Entity Address, Address Line Two | Jan Smuts Avenue and Bolton Road |
| Entity Address, City or Town | Johannesburg |
| Entity Address, Country | ZA |
| Entity Address, Postal Zip Code | |
| Entity Incorporation, State Country Name | FL |
| City Area Code | 27 |
| Local Phone Number | 11-343-2000 |
| Entity File Number | 000-31203 |
| Entity Central Index Key | 0001041514 |
| Entity Emerging Growth Company | false |
| Entity Tax Identification Number | 98-0171860 |
| Written Communications | false |
| Soliciting Material | false |
| Pre-commencement Tender Offer | false |
| Pre-commencement Issuer Tender Offer | false |
| NASDAQ Global Select Market [Member] | |
| Document Information [Line Items] | |
| Title of 12(b) Security | Common Shares |
| Trading Symbol | UEPS |
| Security Exchange Name | NASDAQ |
