Derivative Financial Instruments (Tables)

3 Months Ended

Mar. 31, 2012

Derivative Financial Instruments

Commodity option and futures contract commitments for non monetary notional amount

Commodity Options — nickel 60 MT

Commodity Futures	Long/Short	Total
Aluminum	Long	8,400	MT
Aluminum	Short	5,225	MT
Copper	Long	4,559	MT
Copper	Short	11,215	MT
Nickel	Long	132	MT
Nickel	Short	192	MT
Silver	Short	686	Lbs

Summary of the location and amounts of the fair values and gains or losses related to derivatives included in the entity's financial statements

		Fair Value
Balance Sheets		March 31, 2012		December 31, 2011
Commodity futures and options — net asset	Other current assets	$	784	$	—
Commodity futures — net liability	Accrued expenses	—		1,219

		Gain (Loss) for Three Months Ended
Statements of Income		March 31, 2012			March 31, 2011
Commodity futures	Costs of goods sold	$	(3,618	)	$	2,923