Revenue Recognition (Revenue Disaggregated By Major Revenue Streams) (Details) - USD ($) $ in Thousands	3 Months Ended			9 Months Ended
	Mar. 31, 2021	Sep. 30, 2020	Mar. 31, 2020	Mar. 31, 2021	Mar. 31, 2020
Disaggregation of Revenue [Line Items]
Revenues	$ 28,828	$ 35,136	$ 34,614	$ 96,269	$ 119,748
Processing [Member]
Disaggregation of Revenue [Line Items]
Revenues	17,473	21,518	20,025	57,803	68,965
Financial Services [Member]
Disaggregation of Revenue [Line Items]
Revenues	9,326		10,746	25,741	35,278
Technology [Member]
Disaggregation of Revenue [Line Items]
Revenues	2,029		3,843	12,725	15,505
Processing Fees [Member]
Disaggregation of Revenue [Line Items]
Revenues	14,410	16,929	16,820	46,669	48,499
Processing Fees [Member] | Processing [Member]
Disaggregation of Revenue [Line Items]
Revenues	13,844	16,330	15,527	44,929	44,659
Processing Fees [Member] | Financial Services [Member]
Disaggregation of Revenue [Line Items]
Revenues	566		1,293	1,740	3,840
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	2,945		3,704	10,515	19,637
Telecom Products And Services [Member] | Processing [Member]
Disaggregation of Revenue [Line Items]
Revenues	2,945		3,704	10,515	19,637
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	1,414		2,525	3,870	10,888
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	1,414		2,525	3,870	10,888
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	5,474		5,552	14,962	16,090
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	5,474		5,552	14,962	16,090
Lending Revenue [Member] | Technology [Member]
Disaggregation of Revenue [Line Items]
Revenues	0		0	0	0
Technology Products [Member]
Disaggregation of Revenue [Line Items]
Revenues	2,266		4,071	13,881	16,247
Technology Products [Member] | Processing [Member]
Disaggregation of Revenue [Line Items]
Revenues	459		241	1,584	784
Technology Products [Member] | Financial Services [Member]
Disaggregation of Revenue [Line Items]
Revenues	87		0	157	0
Technology Products [Member] | Technology [Member]
Disaggregation of Revenue [Line Items]
Revenues	1,720		3,830	12,140	15,463
Insurance Revenue [Member]
Disaggregation of Revenue [Line Items]
Revenues	1,709		1,228	4,779	3,986
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	1,709		1,228	4,779	3,986
Insurance Revenue [Member] | Technology [Member]
Disaggregation of Revenue [Line Items]
Revenues	0		0	0	0
Other [Member]
Disaggregation of Revenue [Line Items]
Revenues	610		714	1,593	4,401
Other [Member] | Processing [Member]
Disaggregation of Revenue [Line Items]
Revenues	225		553	775	3,885
Other [Member] | Financial Services [Member]
Disaggregation of Revenue [Line Items]
Revenues	76		148	233	474
Other [Member] | Technology [Member]
Disaggregation of Revenue [Line Items]
Revenues	309		13	585	42
South Africa [Member]
Disaggregation of Revenue [Line Items]
Revenues	28,407	33,580	33,050	93,414	116,135
South Africa [Member] | Processing [Member]
Disaggregation of Revenue [Line Items]
Revenues	17,052	19,962	18,461	54,948	65,352
South Africa [Member] | Financial Services [Member]
Disaggregation of Revenue [Line Items]
Revenues	9,326		10,746	25,741	35,278
South Africa [Member] | Technology [Member]
Disaggregation of Revenue [Line Items]
Revenues	2,029		3,843	12,725	15,505
South Africa [Member] | Processing Fees [Member]
Disaggregation of Revenue [Line Items]
Revenues	13,989	15,373	15,256	43,814	44,886
South Africa [Member] | Processing Fees [Member] | Processing [Member]
Disaggregation of Revenue [Line Items]
Revenues	13,423	14,774	13,963	42,074	41,046
South Africa [Member] | Processing Fees [Member] | Financial Services [Member]
Disaggregation of Revenue [Line Items]
Revenues	566		1,293	1,740	3,840
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	421	1,556	1,564	2,855	3,613
Rest Of World [Member] | Processing [Member]
Disaggregation of Revenue [Line Items]
Revenues	421	1,556	1,564	2,855	3,613
Rest Of World [Member] | Financial Services [Member]
Disaggregation of Revenue [Line Items]
Revenues	0		0	0	0
Rest Of World [Member] | Technology [Member]
Disaggregation of Revenue [Line Items]
Revenues	0		0	0	0
Rest Of World [Member] | Processing Fees [Member]
Disaggregation of Revenue [Line Items]
Revenues	421	1,556	1,564	2,855	3,613
Rest Of World [Member] | Processing Fees [Member] | Processing [Member]
Disaggregation of Revenue [Line Items]
Revenues	421	$ 1,556	1,564	2,855	3,613
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