Reinsurance Assets And Policyholder Liabilities Under Insurance And Investment Contracts (Summary Of The Movement In Reinsurance Assets And Policyholder Liabilities Under Insurance Contracts) (Details) $ in Thousands	9 Months Ended
	Mar. 31, 2019 USD ($)
Reinsurance Assets And Policyholder Liabilities Under Insurance And Investment Contracts [Abstract]
Reinsurance assets, Beginning Balance	$ 633	[1]
Reinsurance assets, Increase in policyholder benefits under insurance contracts	67	[1]
Reinsurance assets, Claims and policyholders' benefits under insurance contracts	(22)	[1],[2]
Reinsurance assets, Foreign currency adjustment	(34)	[1],[2]
Reinsurance assets, Ending Balance	644	[1]
Insurance contracts, Beginning Balance	(2,032)	[3]
Insurance contracts, Increase in policyholder benefits under insurance contracts	(5,940)	[3]
Insurance contracts, Claims and policyholders' benefits under insurance contracts	6,427	[2],[3]
Insurance contracts, Foreign currency adjustment	106	[2],[3]
Insurance contracts, Ending Balance	$ (1,439)	[3]

[1] Included in other long-term assets.

[2] Represents the effects of the fluctuations between the ZAR and the U.S. dollar.

[3] Included in other long-term liabilities.