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Principles Of Preparation (Supplemental Cash Flow Disclosures) (Details) (USD $) In Thousands, unless otherwise specified	6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012
Supplemental Cash Flow Information [Abstract]
Interest on long-term debt and borrowing under the revolving credit facility	$ 26,840	$ 25,106
Income taxes paid (refund), net	(169)	3,159
Grants of restricted shares of common stock	2,483	2,331
Issuance of performance shares	$ 849	$ 1,193

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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- Definition

Aggregate value of stock related to Restricted Stock Awards issued during the period.

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