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Summary Of Significant Accounting Policies (Summary Of Interest Capitalized And Depreciation Expense) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Summary Of Significant Accounting Policies [Abstract]
Capitalized interest	$ 182	$ 376	$ 250
Depreciation expense	$ 20,478	$ 19,673	$ 19,872

The amount of expense recognized in the current period that reflects the allocation of the cost of tangible assets over the assets' useful lives. Includes production and non-production related depreciation.

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