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Income Taxes (Interest And Penalties) (Details) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2013	Dec. 31, 2012
Income Tax Uncertainties [Abstract]
Gross liability for unrecognized tax benefits, exclusive of interest and penalties	$ 11,887	$ 11,553
Interest and penalties on unrecognized benefits	822	770
Gross uncertain tax positions	12,709	12,323
Amount included in Current liabilities	5,309	5,291
Amount included in Other long-term liabilities	$ 7,400	$ 7,032

This element represents the total of accruals as of the date of the statement of financial position for interest recognized for an underpayment of income taxes computed by applying the applicable statutory rate of interest to the difference between a tax position recognized for financial reporting purposes and the amount previously taken or expected to be taken in a tax return of the entity and the amount of statutory penalties for a tax position claimed or expected to be claimed by the entity, in its tax return, that does not meet the minimum statutory threshold to avoid payment of penalties.

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