Operating Segments (Summary Of Segment Information) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Mar. 31, 2018	Mar. 31, 2017
Segment Reporting Information [Line Items]
Revenues	$ 162,721	$ 147,944	$ 463,695	$ 455,010
Operating income (loss)	7,564	24,547	48,877	82,317
Depreciation and amortization	9,341	10,290	27,030	31,117
Expenditures for long-lived assets	4,225	1,949	7,801	8,498
Reportable Segment [Member]
Segment Reporting Information [Line Items]
Revenues	179,322	162,362	508,558	492,782
Operating income (loss)	12,795	31,563	65,579	99,494
Depreciation and amortization	6,302	6,587	18,219	20,929
Expenditures for long-lived assets	4,225	1,949	7,801	8,498
Corporate/Eliminations [Member]
Segment Reporting Information [Line Items]
Operating income (loss)	(5,231)	(7,016)	(16,702)	(17,177)
Depreciation and amortization	3,039	3,703	8,811	10,188
Expenditures for long-lived assets
South African Transaction Processing [Member] | Reportable Segment [Member]
Segment Reporting Information [Line Items]
Revenues	73,508	63,967	204,093	181,397
Operating income (loss)	12,719	15,531	38,521	44,451
Depreciation and amortization	1,236	1,139	3,476	3,433
Expenditures for long-lived assets	1,794	448	3,171	1,490
International Transaction Processing [Member] | Reportable Segment [Member]
Segment Reporting Information [Line Items]
Revenues	46,240	41,514	136,447	131,704
Operating income (loss)	(14,892)	1,968	(14,567)	11,689
Depreciation and amortization	4,668	5,083	13,681	16,440
Expenditures for long-lived assets	1,990	1,309	3,788	6,275
Financial Inclusion And Applied Technologies [Member] | Reportable Segment [Member]
Segment Reporting Information [Line Items]
Revenues	59,574	56,881	168,018	179,681
Operating income (loss)	14,968	14,064	41,625	43,354
Depreciation and amortization	398	365	1,062	1,056
Expenditures for long-lived assets	$ 441	$ 192	$ 842	$ 733