Segment Information (Schedule Of Long-Lived Assets By Geographic Areas) (Details) - USD ($) $ in Thousands	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2016
Revenues from External Customers and Long-Lived Assets [Line Items]
Long lived assets	$ 386,550	$ 394,241	$ 384,276
United States [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Long lived assets	142,337	150,677	148,789
Australia [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Long lived assets	173,394	183,159	185,978
Rest Of The World [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Long lived assets	$ 70,819	$ 60,405	$ 49,509