Derivative Commodity Instruments

12 Months Ended

Dec. 31, 2014

Derivative Instruments and Hedges, Assets [Abstract]

Derivative Commodity Instruments

Derivative Commodity Instruments

The Company uses derivative instruments to reduce price volatility risk on commodities, primarily natural gas and ethane, from time to time. The Company does not use derivative instruments to engage in speculative activities.

For derivative instruments that are designated and qualify as fair value hedges, the gains or losses on the derivative instruments, as well as the offsetting losses or gains on the hedged items attributable to the hedged risk, were included in cost of sales in the consolidated statements of operations for the years ended December 31, 2013 and 2012. The Company had no derivative instruments that were designated as fair value hedges during the year ended December 31, 2014.

Gains and losses from changes in the fair value of derivative instruments that are not designated as hedging instruments were included in gross profit in the consolidated statements of operations for the years ended December 31, 2014, 2013 and 2012.

The exposure on commodity derivatives used for price risk management includes the risk that the counterparty will not pay if the market declines below the established fixed price. In such case, the Company would lose the benefit of the derivative differential on the volume of the commodities covered. In any event, the Company would continue to receive the market price on the actual volume hedged. The Company also bears the risk that it could lose the benefit of market improvements over the fixed derivative price for the term and volume of the derivative instruments (as such improvements would accrue to the benefit of the counterparty).

Disclosures related to the Company's derivative assets and derivative liabilities subject to enforceable master netting arrangements have not been presented as they were not material to the Company's consolidated balance sheets at December 31, 2014 and 2013.

The fair values of derivative instruments in the Company's consolidated balance sheets were as follows:

	Asset Derivatives
	Balance Sheet Location	Fair Value as of December 31,
		2014		2013
Not designated as hedging instruments
Commodity forward contracts	Accounts receivable, net	$	3,145	$	296
Total asset derivatives		$	3,145	$	296
	Liability Derivatives
	Balance Sheet Location	Fair Value as of December 31,
		2014		2013
Not designated as hedging instruments
Commodity forward contracts	Accrued liabilities	$	6,549	$	176
Commodity forward contracts	Other liabilities	3,559		—
Total liability derivatives		$	10,108	$	176

The following tables reflect the impact of derivative instruments designated as fair value hedges and the related hedged item on the Company's consolidated statements of operations. There was no material ineffectiveness with regard to the Company's qualifying hedges for the years ended December 31, 2014, 2013 and 2012.

Derivatives in Fair Value    Hedging Relationships	Location of Gain (Loss) Recognized in Income on Derivative	Year Ended December 31,
		2014		2013			2012
Commodity forward contracts	Cost of sales	$	—	$	(303	)	$	17,163

Hedged Items in Fair Value    Hedging Relationships	Location of Gain (Loss) Recognized in Income on  Hedged Items	Year Ended December 31,
		2014		2013		2012
Firm commitment designated as the    hedged item	Cost of sales	$	—	$	143	$	(18,394	)

The impact of derivative instruments that have not been designated as hedges on the Company's consolidated statements of operations were as follows:

Derivatives Not Designated as    Hedging Instruments	Location of Gain (Loss) Recognized in Income on Derivative	Year Ended December 31,
		2014			2013		2012
Commodity forward contracts	Gross profit	$	(9,678	)	$	5,438	$	(11,626	)

See Note 13 for the fair value of the Company's derivative instruments.