Financial Instruments And Fair Value Measurements (Summary Of Financial Assets At Fair Value) (Details) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2012	Jun. 30, 2012
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Total Investments	$ 41,598	$ 53,708
Level 1 [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Total Investments	0	0
Level 2 [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Total Investments	7,312	19,419
Level 3 [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Total Investments	34,286	34,289
Time Deposit - International [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Total Investments	7,312	19,419
Time Deposit - International [Member] | Level 1 [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Total Investments	0	0
Time Deposit - International [Member] | Level 2 [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Total Investments	7,312	19,419
Time Deposit - International [Member] | Level 3 [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Total Investments	0	0
Auction Rate Securities [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Total Investments	34,286	34,289
Auction Rate Securities [Member] | Level 1 [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Total Investments	0	0
Auction Rate Securities [Member] | Level 2 [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Total Investments	0	0
Auction Rate Securities [Member] | Level 3 [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Total Investments	$ 34,286	$ 34,289