Derivative Instruments (Notional Amount Of Foreign Exchange Contracts) (Details) (USD $) In Thousands, unless otherwise specified	9 Months Ended
	Sep. 30, 2013
Derivative [Line Items]
Transaction Amount	$ 3,900
Foreign Exchange Contract 3 [Member]
Derivative [Line Items]
Transaction Date	May 01, 2012
Transaction Amount	300
Effective Date	Jan. 01, 2013
Expiration Date	Dec. 01, 2013
Foreign Exchange Contract 4 [Member]
Derivative [Line Items]
Transaction Date	Aug. 01, 2013
Transaction Amount	1,200
Effective Date	Jan. 01, 2014
Expiration Date	Dec. 01, 2014
Foreign Exchange Contract 6 [Member]
Derivative [Line Items]
Transaction Date	Dec. 01, 2012
Transaction Amount	1,500
Effective Date	Dec. 01, 2012
Expiration Date	Dec. 01, 2013
Foreign Exchange Contract 7 [Member]
Derivative [Line Items]
Transaction Date	Jan. 01, 2013
Transaction Amount	$ 900
Effective Date	Jan. 01, 2013
Expiration Date	Dec. 01, 2013