Short-Term And Long-Term Investments (Narrative) (Details) (USD $)	Dec. 31, 2012	Jun. 30, 2012
Short-term Investments	$ 10,640,000	$ 11,227,000
Amount that fair value exceeded based on observable market activity and internal valuations	2,200,000
Fixed Deposits And Certificates Of Deposit [Member]
Short-term Investments	6,143,000	6,603,000
Variable Rate Demand Obligation [Member]
Short-term Investments	2,475,000	2,560,000
Repurchase Agreements [Member]
Short-term Investments	$ 2,000,000	$ 2,000,000