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Goodwill And Intangible Assets (Changes In Intangible Assets, Net Of Accumulated Amortization) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010
Goodwill And Intangible Assets [Abstract]
Net balance at January 1	$ 53,880	$ 13,543
Amortization expense	(5,728)	(3,698)
Acquisitions		43,956
Disposals	(518)
Currency translation	(515)	79
Net balance at December 31	$ 47,119	$ 53,880

The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method.

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