Accounts Receivable, Net And Other Receivables And Finance Loans Receivable, Net (Schedule Of Accounts Receivable, Net And Other Receivables) (Details) - USD ($) $ in Thousands	9 Months Ended	12 Months Ended
	Mar. 31, 2020	Jun. 30, 2019
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accounts receivable, trade, net	$ 12,691	$ 12,637
Accounts receivable, trade, gross	13,076	13,298
Allowance for doubtful accounts receivable, end of period	385	661
Beginning of year	661	678
Reversed to statement of operations	(183)	(22)
Charged to statement of operations	145	3,118
Utilized	(128)	(3,059)
Deconsolidation	0	(38)
Foreign currency adjustment	(110)	(16)
Taxes refundable related to sale of Net1 Korea (Note 2)	19,473	0
Other receivables	10,678	11,238
Total accounts receivable, net	45,842	31,135
Carbon [Member] | Accounts Receivable [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loan provided	3,000	3,000
DNI [Member] | Accounts Receivable [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loan provided	$ 0	$ 4,260