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Equity-Accounted Investments And Other Long-Term Assets (Narrative) (Details) R / shares in Units, $ / shares in Units, R in Millions									1 Months Ended										3 Months Ended			12 Months Ended
	Aug. 10, 2023 USD ($)	Aug. 10, 2023 ZAR (R) R / shares	Feb. 03, 2021 USD ($)	Oct. 26, 2020 USD ($)	Sep. 30, 2020 USD ($) $ / shares	Apr. 01, 2020 ZAR (R) Item	Aug. 02, 2017 USD ($) shares	Aug. 02, 2017 ZAR (R) shares	Feb. 28, 2022 USD ($)	Oct. 31, 2021 shares	Jun. 30, 2021 USD ($) $ / shares	Mar. 31, 2021 USD ($) $ / shares	Nov. 30, 2020 USD ($) $ / shares	Oct. 31, 2020 USD ($)	Mar. 31, 2020 USD ($)	Mar. 31, 2020 ZAR (R)	Jun. 30, 2017 USD ($)	Aug. 31, 2016 USD ($)	Sep. 30, 2022 R / shares	Dec. 31, 2020 USD ($) $ / shares	Sep. 30, 2020 USD ($) Item $ / shares	Jun. 30, 2023 USD ($) shares	Jun. 30, 2022 USD ($) shares	Jun. 30, 2021 USD ($) $ / shares	Jun. 30, 2019 USD ($)	Jun. 30, 2023 ZAR (R) R / shares shares	Jul. 01, 2020 USD ($)
Market value of holding																						$ 3,171,000	$ 5,861,000
Cash payment for repurchase of common stock																						1,287,000	0	$ 0
Change in fair value of equity securities																						0	0	49,304,000
Equity Method Investment Realized Gain Loss On Disposal																						(205,000)	(376,000)	(13,000)
Bank Frick [Member]
Fair value of consideration received			$ 15,000,000.0
Amount payable to terminate all existing arrangements and settle all liabilities			3,600,000
Transaction costs incurred			40,000.00
Consideration amount from disposal of discontinued operation including liabilities			18,600,000
Carbon Tech Limited [Member]
Cash consideration received on transaction																						$ 500,000
Percentage of retained equity ownership interest disposed																						25.00%
Allowance for doubtful loans receivable																							$ 1,000,000.0
Equity Method Investment Realized Gain Loss On Disposal																						$ 250,000
Amount received at closing from interest sold																						250,000
Sale of interest, amount owned in twelve months																						250,000
Sale of interest, remaining amount																						750,000
Loan [Member] \| Carbon Tech Limited [Member]
Notes payable amount																						750,000
Debt, face value																						$ 3,000,000
Receivable On July 15, 2022 [Member] \| Bank Frick [Member]
Fair value of consideration received			3,900,000
Receivable On October 30, 2021 [Member] \| Bank Frick [Member]
Fair value of consideration received			7,500,000
Finbond [Member]
Equity-accounted investments, ownership percentage																						27.80%	29.31%			27.80%
Investment shares owned \| shares																						220,523,358				220,523,358
Number of shares sold \| shares																						25,456,545	22,841,030
Impairment loss on equity method investment																				$ 800,000	$ 16,800,000	$ 1,100,000		17,700,000
Market value of holding																						$ 4,600,000				R 86,000.0
Share price per share \| (per share)					$ 1.04														R 0.49	$ 0.99	$ 1.04					R 0.39
Number of shareholders that own approximately 90% of issued and outstanding shares \| Item																					3
Liquidity discount																			25.00%	15.00%	15.00%		15.00%
Percentage of issued and outstanding shares owned by three shareholders																					90.00%	80.00%
Equity Method Investment Realized Gain Loss On Disposal																						$ (400,000)	$ (400,000)
Finbond [Member] \| Subsequent Event [Member]
Cash consideration received on transaction	$ 3,400,000	R 64.2
Sale price per share \| R / shares		R 0.2911
V2 [Member]
Impairment loss on equity method investment																								500,000
Market value of holding																											$ 700,000
Working capital facility					$ 1,500,000						$ 5,000,000.0										$ 1,500,000			5,000,000.0
Amount drawn from working capital facility grant														$ 1,000,000.0										500,000
Allowance for doubtful loans receivable											$ 1,500,000													$ 1,500,000
Cell C [Member]
Equity-accounted investments, ownership percentage																			15.00%			5.00%	15.00%			5.00%
Investment amount owned																						$ 0.0	$ 0.0
Cell C [Member] \| Class A [Member]
Investment shares owned \| shares																						75,000,000				75,000,000
CPS [Member]
Equity-accounted investments, ownership percentage																						87.50%	87.50%			87.50%
Cedar Cellular [Member]
Equity-accounted investments, ownership percentage																						7.625%	7.625%			7.625%
Mobikwik [Member]
Equity-accounted investments, ownership percentage																						10.00%	10.00%			10.00%
Investment amount owned												$ 52,900,000	$ 27,000,000.0							$ 42,100,000		$ 76,300,000
Share price per share \| $ / shares											$ 245.50	$ 170.33	$ 135.54											$ 245.50
Post conversion share price \| $ / shares											$ 12.28	$ 8.52	$ 6.78											$ 12.28
Aggregate purchase price of shares in cash																	$ 10,600,000	$ 15,000,000.0							$ 1,100,000
Change in fair value of equity securities											$ 24,000,000.0	$ 10,800,000	$ 15,100,000											$ 49,300,000
Mobikwik [Member] \| I P O [Member]
Shares issued in conversion \| shares										6,215,620
Equity investment, shares, conversion ratio										20
Mobikwik [Member] \| Convertible Preferred Stock [Member] \| I P O [Member]
Compulsorily Convertible Cumulative Preference Shares \| shares										310,781
Mobikwik [Member] \| Minimum [Member]
Equity investment acquisition period																		24 months
Mobikwik [Member] \| Maximum [Member]
Market value of holding																		$ 40,000,000.0
Carbon [Member]
Investment amount owned																							$ 0
Carbon [Member] \| Carbon Tech Limited [Member]
Investment amount owned																							$ 0
Revix [Member]
Investment amount owned									$ 0
Fair value of consideration received									700,000
Equity Method Investment Realized Gain Loss On Disposal									$ 700,000
Lesaka [Member] \| DNI [Member] \| Call Option [Member]
Cash consideration received on transaction															$ 5,500,000	R 99.2
Lesaka [Member] \| Finbond [Member]
Equity-accounted investments, ownership percentage																						27.80%				27.80%
Lesaka [Member] \| Cell C [Member] \| Class A [Member]
Investment shares owned \| shares							75,000,000	75,000,000
Aggregate purchase price of shares in cash							$ 151,000,000.0	R 2,000.0
Lesaka [Member] \| MIC [Member] \| Sale Of Remaining Interest in DNI [Member] \| Unsecured Notes Payable [Member]
Cash consideration received on transaction				$ 5,700,000	$ 300,000																			$ 6,000,000.0
Number of equal installment payments \| Item						18
Periodic principal payment amount						R 5.5									$ 300,000
Frick Family Foundation [Member] \| Bank Frick [Member]
Consideration amount from disposal of discontinued operation including liabilities			$ 30,000,000
Percentage of retained equity ownership interest disposed			35.00%