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Consolidated Statements of Cash Flows (Supplementals) (Details 3) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Supplemental Cash Flow Information
Interest paid	$ 38,092	$ 21,168	$ 15,351
Income taxes paid	$ 12,501	$ 33,641	$ 24,307

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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