Financial Instruments And Fair Value Measurements (Contractual Maturities Of Investments) (Details) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2012
Financial Instruments And Fair Value Measurements [Abstract]
Due within one year, Amortized Cost Basis	$ 19,252
Due 1 -2 years, Amortized Cost Basis	167
Due after 10 years - auction rate securities, Amortized Cost Basis	52,625
Total short-term and long-term investments, Amortized Cost Basis	72,044
Due within one year, Aggregate Fair Value	19,252
Due 1 -2 years, Aggregate Fair Value	167
Due after 10 years - auction rate securities, Aggregate Fair Value	34,289
Total short-term and long-term investments, Aggregate Fair Value	$ 53,708

Amount of available-for-sale debt securities at cost, net of adjustments, maturing in the second fiscal year through the fifth fiscal year following the latest fiscal year. Adjustments include, but are not limited to, accretion, amortization, collection of cash, previous other-than-temporary impairments (OTTI) recognized in earnings (less any cumulative-effect adjustments, as defined) and fair value hedge accounting adjustments.

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Amount of available-for-sale debt securities at cost, net of adjustments, maturing after the tenth fiscal year following the latest fiscal year. Adjustments include, but are not limited to, accretion, amortization, collection of cash, previous other-than-temporary impairments (OTTI) recognized in earnings (less any cumulative-effect adjustments, as defined) and fair value hedge accounting adjustments.

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- Definition

Amount of available-for-sale debt securities at cost, net of adjustments, which include, but are not limited to, accretion, amortization, collection of cash, previous other-than-temporary impairments (OTTI) recognized in earnings (less any cumulative-effect adjustments, as defined) and fair value hedge accounting adjustments.

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- Definition

Amount of available-for-sale debt securities at cost, net of adjustments, maturing in the next fiscal year following the latest fiscal year. Adjustments include, but are not limited to, accretion, amortization, collection of cash, previous other-than-temporary impairments (OTTI) recognized in earnings (less any cumulative-effect adjustments, as defined) and fair value hedge accounting adjustments.

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- Definition

Amount of debt securities categorized neither as held-to-maturity nor trading.

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