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Goodwill And Other Intangible Assets (Narrative) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Finite-Lived Intangible Assets [Line Items]
Long-term growth rate used in determining the terminal value	4.00%
Amortization of intangible assets	$ 5,588	$ 5,588	$ 5,743
Maximum [Member]
Finite-Lived Intangible Assets [Line Items]
Discounted rates on projected future cash flows	15.80%
Minimum [Member]
Finite-Lived Intangible Assets [Line Items]
Discounted rates on projected future cash flows	11.00%

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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