Fair Value Measurements (Contractual Maturities Of Available For Sale Investments) (Details) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2014	Dec. 31, 2013
Fair Value Disclosures [Abstract]
Maturing in one year or less	$ 3,296	$ 1,846
Maturing after one year through three years	6,065	7,113
Maturing after three years	1,743	2,486
Total debt securities	$ 11,104	$ 11,445

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

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