Basis Of Presentation And Summary Of Significant Accounting Policies (Impact Of Restatement On Affected Lines In Processing And Total Columns Included In Revenue Note (Note 16)) (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
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Revenues	$ 28,828	$ 35,136	$ 34,614	$ 96,269	$ 119,748
Processing [Member]
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Revenues	17,473	21,518	20,025	57,803	68,965
South Africa [Member]
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Revenues	28,407	33,580	33,050	93,414	116,135
South Africa [Member] | Processing [Member]
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Revenues	17,052	19,962	18,461	54,948	65,352
Rest Of World [Member]
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Revenues	421	1,556	1,564	2,855	3,613
Rest Of World [Member] | Processing [Member]
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Revenues	421	1,556	1,564	2,855	3,613
Processing Fees [Member]
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Revenues	14,410	16,929	16,820	46,669	48,499
Processing Fees [Member] | Processing [Member]
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Revenues	13,844	16,330	15,527	44,929	44,659
Processing Fees [Member] | South Africa [Member]
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Revenues	13,989	15,373	15,256	43,814	44,886
Processing Fees [Member] | South Africa [Member] | Processing [Member]
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Revenues	13,423	14,774	13,963	42,074	41,046
Processing Fees [Member] | Rest Of World [Member]
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Revenues	421	1,556	1,564	2,855	3,613
Processing Fees [Member] | Rest Of World [Member] | Processing [Member]
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Revenues	$ 421	1,556	1,564	$ 2,855	3,613
As Reported [Member]
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Revenues		37,113	36,514		125,019
As Reported [Member] | Processing [Member]
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Revenues		23,495	21,925		74,236
As Reported [Member] | South Africa [Member]
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Revenues		35,557	34,950		121,406
As Reported [Member] | South Africa [Member] | Processing [Member]
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Revenues		21,939	20,361		70,623
As Reported [Member] | Processing Fees [Member]
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Revenues		18,906	18,720		53,770
As Reported [Member] | Processing Fees [Member] | Processing [Member]
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Revenues		18,307	17,427		49,930
As Reported [Member] | Processing Fees [Member] | South Africa [Member]
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Revenues		17,350	17,156		50,157
As Reported [Member] | Processing Fees [Member] | South Africa [Member] | Processing [Member]
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Revenues		16,751	15,863		46,317
Correction [Member]
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Revenues		(1,977)	(1,900)		(5,271)
Correction [Member] | Processing [Member]
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Revenues		(1,977)	(1,900)		(5,271)
Correction [Member] | South Africa [Member]
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Revenues		(1,977)	(1,900)		(5,271)
Correction [Member] | South Africa [Member] | Processing [Member]
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Revenues		(1,977)	(1,900)		(5,271)
Correction [Member] | Processing Fees [Member]
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Revenues		(1,977)	(1,900)		(5,271)
Correction [Member] | Processing Fees [Member] | Processing [Member]
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Revenues		(1,977)	(1,900)		(5,271)
Correction [Member] | Processing Fees [Member] | South Africa [Member]
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Revenues		(1,977)	(1,900)		(5,271)
Correction [Member] | Processing Fees [Member] | South Africa [Member] | Processing [Member]
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Revenues		$ (1,977)	$ (1,900)		$ (5,271)