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Operating Segments (Narrative) (Details) - USD ($)
3 Months Ended 12 Months Ended
Mar. 31, 2020
Dec. 31, 2019
Jun. 30, 2021
Jun. 30, 2020
Jun. 30, 2019
Segment Reporting Information [Line Items]          
Impairment of goodwill   $ 8,200,000 $ 0 $ 5,589,000 $ 14,440,000
Termination fee to cancel Bank Frick option     0 17,517,000 0
Inter-Segment [Member]          
Segment Reporting Information [Line Items]          
Termination fee to cancel Bank Frick option     17,500,000    
Corporate/Eliminations [Member] | Bank Frick [Member]          
Segment Reporting Information [Line Items]          
Termination fee to cancel Bank Frick option       17,500,000  
International Transaction Processing [Member]          
Segment Reporting Information [Line Items]          
Impairment of goodwill   7,000,000.0      
Financial Inclusion And Applied Technology [Member]          
Segment Reporting Information [Line Items]          
Impairment of goodwill         6,200,000
South African Transaction Processing [Member]          
Segment Reporting Information [Line Items]          
Impairment of goodwill $ 5,600,000 $ 1,200,000 $ 5,600,000 8,200,000  
Processing [Member]          
Segment Reporting Information [Line Items]          
Impairment of goodwill       $ 5,600,000 $ 8,200,000