Derivative Financial Instruments (Tables)

9 Months Ended

Sep. 30, 2011

Derivative Financial Instruments

Commodity future contracts commitment for non monetary notional amount

Commodity	Long/Short	Total
Aluminum	Long	8,400	MT
Aluminum	Short	4,400	MT
Copper	Long	6,554	MT
Copper	Short	6,067	MT
Nickel	Long	12	MT
Nickel	Short	54	MT
Silver	Long	343	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		September 30, 2011		December 31, 2010
Commodity futures net asset	Other current assets	$	1,440	$	—
Commodity futures net liability	Accrued expenses	—		4,988

		Gain (Loss) for Three Months Ended
Statements of Income		September 30, 2011		September 30, 2010
Commodity futures contracts	Costs of goods sold	$	7,112	$	(720	)

		Gain for Nine Months Ended
Statements of Income		September 30, 2011		September 30, 2010
Commodity futures contracts	Costs of goods sold	$	11,457	$	3,688