Fair Value Measurements (Tables)

6 Months Ended

Jun. 30, 2014

Fair Value Measurements

Schedule of assets and liabilities measured at fair value on a recurring basis

The following table sets forth financial assets and liabilities measured at fair value in the consolidated balance sheets and the respective levels to which the fair value measurements are classified within the fair value hierarchy as of  June 30, 2014, and December 31, 2013 (in thousands):

	Total			Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)			Significant Unobservable Inputs (Level 3)
June 30, 2014
Commodity futures – financial assets	$	982		$	—	$	982		$	—
Commodity futures – financial liabilities	(3,581		)	—		(3,581		)	—
December 31, 2013
Commodity futures – financial assets	$	1,010		$	—	$	1,010		$	—
Commodity futures – financial liabilities	4,487			—		4,487			—