Operating Segments (Summary Of Segment Information) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended								12 Months Ended
	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2012
Segment Reporting Information [Line Items]
Revenues	$ 182,753	$ 138,126	$ 137,283	$ 123,494	$ 117,882	$ 111,141	$ 111,442	$ 111,682	$ 581,656	$ 452,147	$ 390,264
Operating income (loss)	42,647	23,949	18,802	16,400	13,591	(4,726)	4,972	9,325	101,798	23,162	61,150
Depreciation and amortization									40,286	40,599	36,499
Expenditures for long-lived assets									23,906	22,747	39,167
Reportable Segment [Member]
Segment Reporting Information [Line Items]
Revenues									621,897	486,694	406,047
Operating income (loss)									144,038	50,383	94,439
Depreciation and amortization									23,733	22,377	16,942
Expenditures for long-lived assets									23,906	22,747	39,167
Inter-Segment [Member]
Segment Reporting Information [Line Items]
Revenues									40,241	34,547	15,783
Operating income (loss)									(42,240)	(27,221)	(33,289)
Depreciation and amortization									16,553	18,222	19,557
South African Transaction Processing [Member] | Reportable Segment [Member]
Segment Reporting Information [Line Items]
Revenues									261,577	242,739	194,630
Operating income (loss)									61,401	(21,316)	33,906
Depreciation and amortization									7,036	7,516	2,982
Expenditures for long-lived assets									3,425	9,400	23,332
International Transaction Processing [Member] | Reportable Segment [Member]
Segment Reporting Information [Line Items]
Revenues									152,725	135,954	120,625
Operating income (loss)									21,952	14,208	14,649
Depreciation and amortization									15,823	14,183	13,209
Expenditures for long-lived assets									19,393	12,490	14,994
Financial Inclusion And Applied Technology [Member] | Reportable Segment [Member]
Segment Reporting Information [Line Items]
Revenues									207,595	108,001	90,792
Operating income (loss)									60,685	57,491	45,884
Depreciation and amortization									874	678	751
Expenditures for long-lived assets									$ 1,088	$ 857	$ 841