Fair Value Of Financial Instruments (Schedule Of Assets And Liabilities Measured On A Recurring Basis) (Details) - USD ($) $ in Thousands	Jun. 30, 2015	Dec. 31, 2014	Jun. 30, 2014	Dec. 31, 2013
Fair Value, Inputs, Level 1 [Member]
Available-for-sale Securities	$ 14,664	$ 15,503
Fair Value, Inputs, Level 2 [Member]
Cash Flow Hedge Derivative Instrument Assets at Fair Value	0	0
Cash Flow Hedge Derivative Instrument Liabilities at Fair Value	6,021	5,193
Fair Value, Inputs, Level 3 [Member]
Business Combination, Contingent Consideration, Liability	$ 3,000	$ 3,000	$ 4,000	$ 2,600