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Financial Instruments And Risk Management (Summary Of Offsetting Liabilities) (Details) (Commodity Contract [Member], USD $) In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Commodity Contract [Member]
Offsetting Liabilities [Line Items]
Gross Amounts of Recognized Liabilities	$ 300	$ 3,786
Gross Amounts Offset in the Consolidated Balance Sheet	(9)	(3,684)
Net Amounts of Liabilities Presented in the Consolidated Balance Sheet	$ 291	$ 102

Fair value of financial liability or contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset, elected not to be offset against a right to receive collateral under a master netting arrangement.

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