Operating Segments (Revenue Based On Geographic Location) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended								12 Months Ended
	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2012
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	$ 182,753	$ 138,126	$ 137,283	$ 123,494	$ 117,882	$ 111,141	$ 111,442	$ 111,682	$ 581,656	$ 452,147	$ 390,264
South Africa [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues									428,931	317,916	272,063
South Korea [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues									146,667	129,338	114,096
Rest Of World [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues									$ 6,058	$ 4,893	$ 4,105