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Ravenswood impairment	9 Months Ended
Ravenswood impairment	Sep. 30, 2015
Asset Impairment Charges [Abstract]
Ravenswood impairment	Ravenswood impairment At June 30, 2015, we recorded an impairment charge of $30,850 related to the Ravenswood, West Virginia aluminum smelter. The charge included $21,500 to write down property, plant and equipment to estimated net salvage value and $7,800 to write down inventory to its net realizable value. We also accrued $1,550 for employee severance and other exit costs which are expected to be substantially paid by the end of 2015. On July 27, 2015, we announced the immediate and permanent closure of Ravenswood. The Ravenswood smelter has been idled since February 2009. The decision to permanently close the Ravenswood smelter was based on the inability to secure a competitive power contract for the smelter, compounded by challenging aluminum market conditions largely driven by increased exports of aluminum from China. As a result, the economics of restarting and operating the facility are unfavorable. The Ravenswood assets of $32,067 are classified as "Assets held for sale" on our Consolidated Balance Sheets as of September 30, 2015 and are expected to be sold over the next twelve months. The major components of the assets include inventory of $9,968 and property, plant and equipment of $22,099.