Inventories (Detail) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2013	Dec. 31, 2012
Inventory [Line Items]
Raw materials and starting stock	$ 6,965	$ 8,292
Semi-finished and finished steel products	79,848	79,870
Operating supplies	8,335	7,587
Total inventory, net	$ 95,148	$ 95,749

Carrying value of operating materials and supplies as of the Balance Sheet date.

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The aggregated amount of merchandise or goods held by the entity and readily available for future sale plus items held by the entity which are partially complete or in the process of being readied for future sale. This amount is net of valuation reserves and adjustments.

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Amount after valuation and LIFO reserves of inventory expected to be sold, or consumed within one year or operating cycle, if longer.

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- Definition

Gross amount of unprocessed materials to be used in manufacturing or production process and supplies that will be consumed.

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