Fair Value Of Financial Instruments, Derivative And Marketable Securities (Notional Amount Of Foreign Exchange Contracts) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013
Derivative [Line Items]
Transaction Amount	$ 34,965
Foreign Exchange Contract 1 [Member]
Derivative [Line Items]
Transaction Date	2013-08
Transaction Amount	1,200
Effective Date	2014-01
Expiration Date	2014-12
Foreign Exchange Contract 2 [Member]
Derivative [Line Items]
Transaction Date	2013-11
Transaction Amount	600
Effective Date	2014-01
Expiration Date	2014-12
Foreign Exchange Contract 3 [Member]
Derivative [Line Items]
Transaction Date	2013-12
Transaction Amount	1,268
Effective Date	2014-03
Expiration Date	2014-03
Foreign Exchange Contract 4 [Member]
Derivative [Line Items]
Transaction Date	2013-12
Transaction Amount	1,269
Effective Date	2014-06
Expiration Date	2014-06
Foreign Exchange Contract 5 [Member]
Derivative [Line Items]
Transaction Date	2013-12
Transaction Amount	$ 30,628
Effective Date	2014-07
Expiration Date	2014-07