Equity Instruments Issued Pursuant To BEE Transactions (Narrative) (Details) - Equity Instrument 2014 Transaction [Member] - USD ($) $ in Millions		12 Months Ended
	Apr. 16, 2014	Jun. 30, 2016
Business Acquisition, Equity Interests Issued or Issuable [Line Items]
Expected volatility rate		21.04%
Risk free rate		7.90%
Expected term, in years		5 years
Estimated expected volatility calculation period, in days		30 days
Common Stock [Member]
Business Acquisition, Equity Interests Issued or Issuable [Line Items]
Number of shares, issued	4,400,000
Fair value of option	$ 11.3