Operating Segments (Reconciliation Of Reportable Segments Revenue) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2019	Dec. 31, 2018
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenues	$ 74,080	$ 97,150	$ 154,836	$ 223,034
Continuing [Member]
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenues	74,080	77,442	154,836	184,539
Discontinued [Member]
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenues		19,708		38,495
South African Transaction Processing [Member]
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenues	18,171	20,803	35,370	55,266
International Transaction Processing [Member]
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenues	34,363	38,124	68,380	77,511
Financial Inclusion And Applied Technologies [Member]
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenues	21,546	38,223	51,086	90,257
Financial Inclusion And Applied Technologies [Member] | Continuing [Member]
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenues		18,515		51,762
Financial Inclusion And Applied Technologies [Member] | Discontinued [Member]
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenues		19,708		38,495
Reportable Segment [Member]
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenues	76,699	98,849	160,260	229,191
Reportable Segment [Member] | Continuing [Member]
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenues	76,699	79,141	160,260	190,696
Reportable Segment [Member] | Discontinued [Member]
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenues	0	19,708	0	38,495
Reportable Segment [Member] | South African Transaction Processing [Member]
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenues	20,350	21,970	39,749	59,719
Reportable Segment [Member] | International Transaction Processing [Member]
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenues	34,363	38,124	68,380	77,511
Reportable Segment [Member] | Financial Inclusion And Applied Technologies [Member]
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenues	21,986	38,755	52,131	91,961
Reportable Segment [Member] | Financial Inclusion And Applied Technologies [Member] | Continuing [Member]
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenues		19,047		53,466
Reportable Segment [Member] | Financial Inclusion And Applied Technologies [Member] | Discontinued [Member]
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenues		19,708		38,495
Inter-Segment [Member]
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenues	(2,619)	(1,699)	(5,424)	(6,157)
Inter-Segment [Member] | Continuing [Member]
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenues		(1,699)		(6,157)
Inter-Segment [Member] | Discontinued [Member]
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenues		0		0
Inter-Segment [Member] | South African Transaction Processing [Member]
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenues	(2,179)	(1,167)	(4,379)	(4,453)
Inter-Segment [Member] | International Transaction Processing [Member]
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenues	0	0	0	0
Inter-Segment [Member] | Financial Inclusion And Applied Technologies [Member]
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenues	$ (440)	(532)	$ (1,045)	(1,704)
Inter-Segment [Member] | Financial Inclusion And Applied Technologies [Member] | Continuing [Member]
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenues		(532)		(1,704)
Inter-Segment [Member] | Financial Inclusion And Applied Technologies [Member] | Discontinued [Member]
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenues		$ 0		$ 0