Derivative Instruments (Fair Values Of Derivative Instruments) (Details) (Prepaid Expenses And Other Assets [Member], USD $) In Thousands, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011
Interest Rate Contract [Member] | Designated As Hedging Instrument [Member]
Derivative [Line Items]
Asset derivatives, Notional Amount	$ 0	$ 15,000
Asset derivatives, Fair Value	0	0
Foreign Exchange Contract [Member] | Nondesignated [Member]
Derivative [Line Items]
Asset derivatives, Notional Amount	93,813	80,375
Asset derivatives, Fair Value	$ (406)	$ 260