Fair Value Of Financial Instruments (Fair Value Of Assets And Liabilities Measured On Recurring Basis) (Details) - USD ($) $ in Thousands	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2020
Cell C [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fixed maturity investments (included in cash and cash equivalents)	$ 0	$ 0
Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment	0	0
Cash, cash equivalents and restricted cash (included in other long term assets)	371	381
Fixed maturity investments (included in cash and cash equivalents)	1,196	3,158
Total assets at fair value	1,567	3,539
Quoted Price In Active Markets For Identical Assets (Level 1) [Member] | Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment	0	0
Cash, cash equivalents and restricted cash (included in other long term assets)	371	381
Fixed maturity investments (included in cash and cash equivalents)	1,196	3,158
Total assets at fair value	1,567	3,539
Significant Other Observable Inputs (Level 2) [Member] | Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment	0	0
Cash, cash equivalents and restricted cash (included in other long term assets)	0	0
Fixed maturity investments (included in cash and cash equivalents)	0	0
Total assets at fair value	0	0
Significant Unobservable Inputs (Level 3) [Member] | Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment	0	0
Cash, cash equivalents and restricted cash (included in other long term assets)	0	0
Fixed maturity investments (included in cash and cash equivalents)	0	0
Total assets at fair value	$ 0	$ 0	$ 0