Summary of Significant Accounting Policies (Schedule Of Long-Term Investments) (Details) (Level 3 [Member], Preferred Stock [Member], USD $) In Thousands, unless otherwise specified	Jun. 30, 2012	Jun. 30, 2011
Level 3 [Member] | Preferred Stock [Member]
Investment Holdings [Line Items]
Investment Owned, at Cost	$ 6,300	$ 6,300
Investment Owned, Unrecognized Unrealized Appreciation (Depreciation), Net	(4,108)	(4,108)
Investment Owned, at Fair Value	$ 2,192	$ 2,192