4. DERIVATIVES (Tables)

6 Months Ended

Jun. 30, 2013

Derivative Asset, Fair Value, Amount Not Offset Against Collateral [Abstract]

Derivatives not designated as hedging instruments

			Realized Gains (Losses)
			Three Months Ended June 30,
Type of Instrument	Statements of Operations Location		2013			2012
Commodity contracts	Cost of goods sold	$	(29	)	$	265
		$	(29	)	$	265

			Unrealized Losses
			Three Months Ended June 30,
Type of Instrument	Statements of Operations Location		2013			2012
Commodity contracts	Cost of goods sold	$	(450	)	$	(145	)
		$	(450	)	$	(145	)

			Realized Gains (Losses)
			Six Months Ended June 30,
Type of Instrument	Statements of Operations Location		2013			2012
Commodity contracts	Cost of goods sold	$	(102	)	$	163
		$	(102	)	$	163

			Unrealized Gains (Losses)
			Six Months Ended June 30,
Type of Instrument	Statements of Operations Location		2013			2012
Commodity contracts	Cost of goods sold	$	(382	)	$	(91	)
		$	(382	)	$	(91	)