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Fair Value Measurements (Tables)

9 Months Ended

Sep. 30, 2012

Fair Value Measurements

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

		Level 1			Level 2			Level 3			Sub-Total			Netting and Collateral			Total
As of September 30, 2012
Assets:
Commodity contracts		$	31,312		$	106,622		$	1,747		$	139,681		$	(101,945	)	$	37,736
Foreign currency contracts		—			5,190			—			5,190			(5,020		)	170
Hedged item inventories		—			575			—			575			—			575
Total		$	31,312		$	112,387		$	1,747		$	145,446		$	(106,965	)	$	38,481
Liabilities:
Commodity contracts		$	32,699		$	96,007		$	—		$	128,706		$	(101,695	)	$	27,011
Foreign currency contracts		—			8,393			—			8,393			(5,020		)	3,373
Hedged item inventories		—			1,445			—			1,445			—			1,445
Total		$	32,699		$	105,845		$	—		$	138,544		$	(106,715	)	$	31,829

As of December 31, 2011
Assets:
Commodity contracts		$	14,038		$	51,033		$	—		$	65,071		$	(43,275	)	$	21,796
Foreign currency contracts		—			2,994			—			2,994			(893		)	2,101
Hedged item inventories		—			3,216			—			3,216			—			3,216
Hedged item commitments		—			206			—			206			—			206
Total		$	14,038		$	57,449		$	—		$	71,487		$	(44,168	)	$	27,319
Liabilities:
Commodity contracts		$	10,148		$	46,754		$	—		$	56,902		$	(43,291	)	$	13,611
Foreign currency contracts		—			1,018			—			1,018			(893		)	125
Hedged item inventories		—			24			—			24			—			24
Earn-out		—			—			4,194			4,194			—			4,194
Total		$	10,148		$	47,796		$	4,194		$	62,138		$	(44,184	)	$	17,954

Schedule of assets and liabilities that are measured at fair value on a recurring basis that utilized Level 3 inputs

		Beginning of Period			Total Gains (Losses) Included in Earnings			Settlements			End of Period			Change in Unrealized Gains Relating to Assets and Liabilities that are Held at end of Period			Location of Total Gains (Losses) Included in Earnings
Three months ended September 30, 2012
Assets:
Commodity contracts		$	—		$	2,060		$	313		$	1,747		$	1,747		Revenue

Three months ended September 30, 2011
Liabilities:
Earn-out		$	5,156		$	149		$	—		$	5,007		$	149		Other income (expense), net

Nine months ended September 30, 2012
Assets:
Commodity contracts		$	—		$	2,060		$	313		$	1,747		$	1,747		Revenue
Liabilities:
Earn-out		$	4,194		$	(110	)	$	4,304		$	—		$	—		Other income (expense), net

Nine months ended September 30, 2011
Assets:
Commodity contracts		$	90		$	—		$	90		$	—		$	—		Revenue
Liabilities:
Earn-out		$	5,012		$	5		$	—		$	5,007		$	5		Other income (expense), net