Operating Segments (Revenue Based On Geographic Location) (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2014
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	$ 151,259	$ 134,736	$ 150,281	$ 154,473	$ 164,286	$ 151,121	$ 154,131	$ 156,441	$ 590,749	$ 625,979	$ 581,656
South Africa [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues									422,022	461,425	428,931
South Korea [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues									158,609	160,853	146,667
Rest Of World [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues									$ 10,118	$ 3,701	$ 6,058