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Derivative Instruments (Tables) | 12 Months Ended
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Dec. 31, 2016
Derivative Instruments, Gain (Loss) [Line Items] |
Schedule of Derivative Instruments in Statement of Financial Position, Fair Value [Table Text Block] | The following table presents the fair value of our derivative instruments, as of December 31, 2016 and 2015. The fair value amounts below are presented on a gross basis and do not reflect the netting of asset and liability positions permitted under our master netting arrangements, including any cash collateral on deposit with our counterparties. We have elected to offset the recognized fair value amounts for multiple derivative instruments executed with the same counterparty in our financial statements. As a result, the asset and liability amounts below may differ from the amounts presented in our accompanying consolidated balance sheets. During the years ended December 31, 2016 and 2015, we did not elect hedge accounting treatment for these derivative positions. As a result, all changes in fair value are marked to market in the accompanying consolidated statements of income and comprehensive income.
(in thousands) |  |  | December 31, 2016 |  | December 31, 2015
Derivative Type | Balance Sheet Location |  | Assets |  | Liabilities |  | Assets |  | Liabilities
Derivatives: |  |  |  |  |  |  |  |
OTC commodity swaps (1) | Other current assets |  | $ | 9 |  |  | $ | (82 | ) |  | $ | 171 |  |  | $ | (45 | )
Total gross value of derivatives |  | 9 |  |  | (82 | ) |  | 171 |  |  | (45 | )
Less: Counterparty netting and cash collateral (2) |  |  | 9 |  |  | 621 |  |  | (706 | ) |  | (45 | )
Total net fair value of derivatives |  |  | $ | — |  |  | $ | (703 | ) |  | $ | 877 |  |  | $ | — |
(1) | As of December 31, 2016 and 2015, we had open derivative contracts representing 93,000 barrels and 171,000 barrels, respectively, of refined petroleum products.
(2) | As of December 31, 2016, we had a cash deficit of $0.6 million netted with the net derivative positions of one of our counterparties. As of December 31, 2015, $0.8 million cash collateral was held by counterparty brokerage firms.
Derivative Instruments, Gain (Loss) [Table Text Block] | ains associated with our derivatives for the years ended December 31, 2016 and 2015 were as follows (in thousands):
|  |  | Year Ended December 31,
Derivative Type | Income Statement Location |  | 2016 |  | 2015 |  | 2014
Interest rate derivatives | Interest expense |  | $ | — |  |  | $ | (24 | ) |  | $ | (92 | )
OTC commodity swaps | Cost of goods sold |  | (2,122 | ) |  | 441 |  |  | 3,083 |
| Total |  | $ | (2,122 | ) |  | $ | 417 |  |  | $ | 2,991 |

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- Definition Tabular disclosure of the location and amount of derivative instruments and nonderivative instruments designated as hedging instruments reported before netting adjustments, and the amount of gain (loss) on derivative instruments and nonderivative instruments designated and qualified as hedging instruments. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4C -URI http://asc.fasb.org/extlink&oid=56946850&loc=SL5624171-113959 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4A -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=56946850&loc=SL5618551-113959 + Details
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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=56946850&loc=SL5624163-113959 + Details
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