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Inventories (Details) (USD $)	12 Months Ended
Inventories (Details) (USD $)	Dec. 31, 2012	Dec. 31, 2011
Inventories
Metals inventory	$ 2,076,000	$ 4,250,000
In-process inventory	228,000	257,000
Material and supplies	1,084,000	805,000
Inventories	3,388,000	5,312,000
Inventory write down charged to cost of metals sold	2,700,000	3,800,000
Inventory write down charged to depreciation expense	$ 800,000	$ 600,000

Carrying amount, net of reserves and adjustments, as of the balance sheet date of merchandise or goods which are partially completed. This inventory is generally comprised of raw materials, labor and factory overhead costs, which require further materials, labor and overhead to be converted into finished goods, and which generally require the use of estimates to determine percentage complete and pricing.

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- Definition

Charge to cost of goods sold that represents the reduction of the carrying amount of inventory, generally attributable to obsolescence or market conditions.

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