Fair Value Of Financial Instruments (Fair Value Of Assets And Liabilities Measured On Recurring Basis) (Details) - Recurring [Member] - USD ($)	Dec. 31, 2024	Jun. 30, 2024	Dec. 31, 2023	Jun. 30, 2023
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash, cash equivalents and restricted cash (included in other long-term assets)	$ 217,000	$ 216,000
Fixed maturity investments (included in cash and cash equivalents)	4,532,000	4,635,000
Total assets at fair value	47,315,000	4,851,000
Cell C [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment	0	0
Mobikwik [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment	42,566,000
Quoted Price In Active Markets For Identical Assets (Level 1) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash, cash equivalents and restricted cash (included in other long-term assets)	217,000	216,000
Fixed maturity investments (included in cash and cash equivalents)	4,532,000	4,635,000
Total assets at fair value	47,315,000	4,851,000
Quoted Price In Active Markets For Identical Assets (Level 1) [Member] | Cell C [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment	0	0
Quoted Price In Active Markets For Identical Assets (Level 1) [Member] | Mobikwik [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment	42,566,000
Significant Other Observable Inputs (Level 2) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
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 Other Observable Inputs (Level 2) [Member] | Cell C [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment	0	0
Significant Other Observable Inputs (Level 2) [Member] | Mobikwik [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment	0
Significant Unobservable Inputs (Level 3) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
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	$ 0
Significant Unobservable Inputs (Level 3) [Member] | Cell C [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment	0	$ 0
Significant Unobservable Inputs (Level 3) [Member] | Mobikwik [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment	$ 0