Document And Entity Information - shares
9 Months Ended
Mar. 31, 2018
May 06, 2018
Document And Entity Information [Abstract]    
Document Type 10-Q  
Amendment Flag false  
Document Period End Date Mar. 31, 2018  
Document Fiscal Year Focus 2018  
Document Fiscal Period Focus Q3  
Entity Registrant Name NET 1 UEPS TECHNOLOGIES INC  
Entity Central Index Key 0001041514  
Current Fiscal Year End Date --06-30  
Entity Filer Category Accelerated Filer  
Trading Symbol ueps  
Entity Common Stock, Shares Outstanding   56,862,187