Derivative Financial Instruments and Hedging Activities (Narrative) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended	9 Months Ended
	Sep. 30, 2012	Sep. 30, 2013 contract
Notional Amount of Foreign Currency Fair Value Hedge Derivatives	$ 3,280
Number Of Foreign Currency Transactions Engaged In During Period		0
Gain (Loss) on Derivative Instruments, Net, Pretax	204
Derivatives	(47)
Contract 1 [Member]
Notional Amount of Foreign Currency Fair Value Hedge Derivatives	3,186
Contract 2 [Member]
Notional Amount of Foreign Currency Fair Value Hedge Derivatives	$ 3,388