Revenue Recognition (Revenue Disaggregated By Major Revenue Streams) (Details) - USD ($) $ in Thousands	3 Months Ended			6 Months Ended
	Dec. 31, 2020	Sep. 30, 2020	Dec. 31, 2019	Dec. 31, 2020	Dec. 31, 2019
Disaggregation of Revenue [Line Items]
Revenues	$ 32,305	$ 35,136	$ 38,918	$ 67,441	$ 85,134
Processing [Member]
Disaggregation of Revenue [Line Items]
Revenues	18,812	21,518	22,847	40,330	48,940
Financial Services [Member]
Disaggregation of Revenue [Line Items]
Revenues	8,895		11,317	16,415	24,532
Technology [Member]
Disaggregation of Revenue [Line Items]
Revenues	4,598		4,754	10,696	11,662
Processing Fees [Member]
Disaggregation of Revenue [Line Items]
Revenues	15,330	16,929	16,236	32,259	31,679
Processing Fees [Member] | Processing [Member]
Disaggregation of Revenue [Line Items]
Revenues	14,755	16,330	14,938	31,085	29,132
Processing Fees [Member] | Financial Services [Member]
Disaggregation of Revenue [Line Items]
Revenues	575		1,298	1,174	2,547
Processing Fees [Member] | Technology [Member]
Disaggregation of Revenue [Line Items]
Revenues	0		0	0	0
Telecom Products And Services [Member]
Disaggregation of Revenue [Line Items]
Revenues	3,148		6,639	7,570	15,933
Telecom Products And Services [Member] | Processing [Member]
Disaggregation of Revenue [Line Items]
Revenues	3,148		6,639	7,570	15,933
Telecom Products And Services [Member] | Financial Services [Member]
Disaggregation of Revenue [Line Items]
Revenues	0		0	0	0
Telecom Products And Services [Member] | Technology [Member]
Disaggregation of Revenue [Line Items]
Revenues	0		0	0	0
Account Holder Fees [Member]
Disaggregation of Revenue [Line Items]
Revenues	1,273		3,103	2,456	8,363
Account Holder Fees [Member] | Processing [Member]
Disaggregation of Revenue [Line Items]
Revenues	0		0	0	0
Account Holder Fees [Member] | Financial Services [Member]
Disaggregation of Revenue [Line Items]
Revenues	1,273		3,103	2,456	8,363
Account Holder Fees [Member] | Technology [Member]
Disaggregation of Revenue [Line Items]
Revenues	0		0	0	0
Lending Revenue [Member]
Disaggregation of Revenue [Line Items]
Revenues	5,288		5,384	9,488	10,538
Lending Revenue [Member] | Processing [Member]
Disaggregation of Revenue [Line Items]
Revenues	0		0	0	0
Lending Revenue [Member] | Financial Services [Member]
Disaggregation of Revenue [Line Items]
Revenues	5,288		5,384	9,488	10,538
Lending Revenue [Member] | Technology [Member]
Disaggregation of Revenue [Line Items]
Revenues	0		0	0	0
Technology Products [Member]
Disaggregation of Revenue [Line Items]
Revenues	5,081		5,042	11,615	12,176
Technology Products [Member] | Processing [Member]
Disaggregation of Revenue [Line Items]
Revenues	665		303	1,125	543
Technology Products [Member] | Financial Services [Member]
Disaggregation of Revenue [Line Items]
Revenues	70		0	70	0
Technology Products [Member] | Technology [Member]
Disaggregation of Revenue [Line Items]
Revenues	4,346		4,739	10,420	11,633
Insurance Revenue [Member]
Disaggregation of Revenue [Line Items]
Revenues	1,613		1,372	3,070	2,758
Insurance Revenue [Member] | Processing [Member]
Disaggregation of Revenue [Line Items]
Revenues	0		0	0	0
Insurance Revenue [Member] | Financial Services [Member]
Disaggregation of Revenue [Line Items]
Revenues	1,613		1,372	3,070	2,758
Insurance Revenue [Member] | Technology [Member]
Disaggregation of Revenue [Line Items]
Revenues	0		0	0	0
Other [Member]
Disaggregation of Revenue [Line Items]
Revenues	572		1,142	983	3,687
Other [Member] | Processing [Member]
Disaggregation of Revenue [Line Items]
Revenues	244		967	550	3,332
Other [Member] | Financial Services [Member]
Disaggregation of Revenue [Line Items]
Revenues	76		160	157	326
Other [Member] | Technology [Member]
Disaggregation of Revenue [Line Items]
Revenues	252		15	276	29
South Africa [Member]
Disaggregation of Revenue [Line Items]
Revenues	31,427	33,580	38,068	65,007	83,085
South Africa [Member] | Processing [Member]
Disaggregation of Revenue [Line Items]
Revenues	17,934	19,962	21,997	37,896	46,891
South Africa [Member] | Financial Services [Member]
Disaggregation of Revenue [Line Items]
Revenues	8,895		11,317	16,415	24,532
South Africa [Member] | Technology [Member]
Disaggregation of Revenue [Line Items]
Revenues	4,598		4,754	10,696	11,662
South Africa [Member] | Processing Fees [Member]
Disaggregation of Revenue [Line Items]
Revenues	14,452	15,373	15,386	29,825	29,630
South Africa [Member] | Processing Fees [Member] | Processing [Member]
Disaggregation of Revenue [Line Items]
Revenues	13,877	14,774	14,088	28,651	27,083
South Africa [Member] | Processing Fees [Member] | Financial Services [Member]
Disaggregation of Revenue [Line Items]
Revenues	575		1,298	1,174	2,547
South Africa [Member] | Processing Fees [Member] | Technology [Member]
Disaggregation of Revenue [Line Items]
Revenues	0		0	0	0
Rest Of World [Member]
Disaggregation of Revenue [Line Items]
Revenues	878	1,556	850	2,434	2,049
Rest Of World [Member] | Processing [Member]
Disaggregation of Revenue [Line Items]
Revenues	878	1,556	850		2,049
Rest Of World [Member] | Financial Services [Member]
Disaggregation of Revenue [Line Items]
Revenues	0		0		0
Rest Of World [Member] | Technology [Member]
Disaggregation of Revenue [Line Items]
Revenues	0		0		0
Rest Of World [Member] | Processing Fees [Member]
Disaggregation of Revenue [Line Items]
Revenues	878	1,556	850	2,434	2,049
Rest Of World [Member] | Processing Fees [Member] | Processing [Member]
Disaggregation of Revenue [Line Items]
Revenues	878	$ 1,556	850	2,434	2,049
Rest Of World [Member] | Processing Fees [Member] | Financial Services [Member]
Disaggregation of Revenue [Line Items]
Revenues	0		0	0	0
Rest Of World [Member] | Processing Fees [Member] | Technology [Member]
Disaggregation of Revenue [Line Items]
Revenues	$ 0		$ 0	$ 0	$ 0