Restructuring Charges (Schedule Of Restructuring And Related Costs) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Restructuring Cost and Reserve [Line Items]
Severance charges	$ 3,826	$ 17,570	$ 3,038
Lease termination charges	0	3,147	0
Asset impairment charges	1,956	6,643	0
Gain on sale of assets held for sale	(622)	(929)	0
Professional fees and other charges	252	4,234	2,500
Total restructuring charges	$ 5,412	$ 30,665	$ 5,538

The charge against earnings resulting from the aggregate write down of all assets from their carrying value to their fair value.

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Amount charged against earnings in the period for incurred and estimated costs associated with exit from or disposal of business activities or restructurings pursuant to a duly authorized plan, excluding asset retirement obligations.

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- Definition

The charge against earnings in the period for known and estimated costs of termination benefits provided to current employees that are involuntarily terminated under a benefit arrangement associated with exit from or disposal of business activities or restructurings pursuant to a duly authorized plan, excluding costs or losses pertaining to an entity newly acquired in a business combination or a discontinued operation as defined by generally accepted accounting principles and costs associated with one-time termination benefits.

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