Derivative Instruments And Hedging Activities (Summary Of Notional Amounts Of Derivative Instruments) (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Derivative [Line Items]
Total forward contracts notional amount	$ 139,624	$ 162,984
Euro Member Countries, Euro [Member]
Derivative [Line Items]
Total forward contracts notional amount	75,886	84,770
Japan, Yen [Member]
Derivative [Line Items]
Total forward contracts notional amount	23,284	42,209
Hungary, Forint [Member]
Derivative [Line Items]
Total forward contracts notional amount	21,159	36,005
United Kingdom, Pounds [Member]
Derivative [Line Items]
Total forward contracts notional amount	14,869
Malaysia, Ringgits [Member]
Derivative [Line Items]
Total forward contracts notional amount	$ 4,426