Fair Value and Derivative Financial Instruments Fair Value and Derivative Financial Instruments (gain (loss) reclassified from accumulated OCI to net income) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011
Derivative Instruments, Gain (Loss) [Line Items]
Forward contracts, gain (loss) reclassified from accumulated OCI into net income	$ (641)	$ 155	$ (981)	$ 208
Foreign Exchange Forward [Member] | Net sales [Member] | Cash Flow Hedging [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Forward contracts, gain (loss) reclassified from accumulated OCI into net income	(631)	133	(1,138)	(25)
Foreign Exchange Forward [Member] | Other, net [Member] | Cash Flow Hedging [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Forward contracts, gain (loss) reclassified from accumulated OCI into net income	$ (10)	$ 22	$ 157	$ 233