Derivative Financial Instruments (Tables)

6 Months Ended

Jun. 30, 2013

Derivative Instruments and Hedging Activities Disclosure [Abstract]

Schedule of Derivative Instruments in Statement of Financial Position, Fair Value [Table Text Block]

Effects of Derivative Instruments on Income 

		Three Months Ended  June 30,				Six Months Ended  June 30,
Consolidated Statements of Operations Location		2013		2012		2013		2012
		gain (loss)		gain (loss)		gain (loss)		gain (loss)
Derivative not designated  as hedging instrument:
Commodity contract	Net Sales	$	—	$	(26)	$	—	$	(906)
Commodity contract	Cost of Goods Sold		—		(711)		—		(521)
	Net amount recognized in earnings	$	—	$	(737)	$	—	$	(1,427)