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Supplemental Consolidated Cash Flow Information (Schedule of Supplemental Consolidated Cash Flow Information) (Details) (USD $) In Thousands	6 Months Ended
	Jun. 30, 2011	Jun. 30, 2010
Supplemental Consolidated Cash Flow Information
Interest paid	$ 2,949	$ 6,449
Income taxes paid (refunded)	$ 7,963	$ (262)

The amount of cash paid during the current period to foreign, federal, state, and local authorities as taxes on income, net of any cash received during the current period as refunds for the overpayment of taxes.

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