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Derivative Instruments (Tables) | 9 Months Ended
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Sep. 30, 2014
Derivative Instruments and Hedging Activities Disclosure [Abstract] |
Fair Values of Derivatives Instruments in Consolidated Balance Sheets | The fair values of derivative instruments in the Company's consolidated balance sheets were as follows:
|  | Derivative Assets
|  | Balance Sheet Location |  | Fair Value as of
|  | September 30, 2014 |  | December 31, 2013
Not designated as hedging instruments |  |  |  |  |  |
Commodity forward contracts |  | Accounts receivable, net |  | $ | 451 |  |  | $ | 296 |
Total derivative assets |  |  |  | $ | 451 |  |  | $ | 296 |
|  | Derivative Liabilities
|  | Balance Sheet Location |  | Fair Value as of
|  | September 30, 2014 |  | December 31, 2013
Not designated as hedging instruments |  |  |  |  |  |
Commodity forward contracts |  | Accrued liabilities |  | $ | 6,477 |  |  | $ | 176 |
Total derivative liabilities |  |  |  | $ | 6,477 |  |  | $ | 176 |
Impact of Derivatives Instruments Designated as Fair Value Hedges | 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. For the three and nine months ended September 30, 2013, there was no material ineffectiveness with regard to the Company's qualifying fair value hedges.
Derivatives in Fair Value Hedging Relationships |  | Location of Gain (Loss) Recognized in Income on Derivative |  | Three Months Ended September 30, |  | Nine Months Ended September 30,
2014 |  | 2013 |  | 2014 |  | 2013
Commodity forward contracts |  | Cost of sales |  | $ | — |  |  | $ | (232 | ) |  | $ | — |  |  | $ | (342 | )
Hedged Items in Fair Value Hedging Relationships |  | Location of Gain (Loss) Recognized in Income on Hedged Items |  | Three Months Ended September 30, |  | Nine Months Ended September 30,
2014 |  | 2013 |  | 2014 |  | 2013
Firm commitment designated as the hedged item |  | Cost of sales |  | $ | — |  |  | $ | 236 |  |  | $ | — |  |  | $ | 15 |
Impact of Derivative Instruments Not Designated as Fair Value Hedges | 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 |  | Three Months Ended September 30, |  | Nine Months Ended September 30,
2014 |  | 2013 |  | 2014 |  | 2013
Commodity forward contracts |  | Gross profit |  | $ | (6,937 | ) |  | $ | 4,854 |  |  | $ | (7,308 | ) |  | $ | 9,897 |

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- Definition Tabular disclosure of the location and fair value amounts of derivative instruments (and nonderivative instruments that are designated and qualify as hedging instruments) reported in the statement of financial position. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4B -URI http://asc.fasb.org/extlink&oid=7476318&loc=SL5624163-113959 + Details
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- Definition Tabular disclosure of derivative instruments (including nonderivative instruments that are designated and qualify as hedging instruments) of (a) the location and amount of gains and losses reported in the statement of financial performance and (b) the location and fair value amounts of the instruments reported in the statement of financial position. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4A -URI http://asc.fasb.org/extlink&oid=7476318&loc=SL5618551-113959 + Details
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- Definition Tabular disclosure for other derivative instruments not designated as hedging instruments of (a) the location and amount of gains and losses reported in the statement of financial performance and (b) the location and fair value amounts of the instruments reported in the statement of financial position. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4C -Subparagraph (e) -URI http://asc.fasb.org/extlink&oid=7476318&loc=SL5624171-113959 + Details
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