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, 2018 USD ($)
Reinsurance Assets And Policyholder Liabilities Under Insurance And Investment Contracts [Abstract]
Reinsurance assets, Beginning Balance	$ 191	[1]
Reinsurance assets, Increase in policyholder benefits under insurance contracts	1,276	[1]
Reinsurance assets, Claims and policyholders' benefits under insurance contracts	(1,263)	[1]
Reinsurance assets, Foreign currency adjustment	20	[1],[2]
Reinsurance assets, Ending Balance	224	[1]
Insurance contracts, Beginning Balance	(1,611)	[3]
Insurance contracts, Increase in policyholder benefits under insurance contracts	(7,881)	[3]
Policyholder Benefits and Claims Incurred, Net	7,691	[3]
Insurance contracts, Foreign currency adjustment	(168)	[2],[3]
Insurance contracts, Ending Balance	$ (1,969)	[3]

[1] Included in other long-term assets.

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

[3] Included in other long-term liabilities.