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Fair Value Measurements | 12 Months Ended
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Dec. 31, 2015
Fair Value Disclosures [Abstract] |
Fair Value Measurements | (14) Fair Value Measurements ASC Topic 820 — Fair Value Measurements and Disclosures ("ASC 820") established a single authoritative definition of fair value when accounting rules require the use of fair value, set out a framework for measuring fair value and required additional disclosures about fair value measurements. ASC 820 clarifies that fair value is an exit price, representing the amount from the perspective of a market participant that holds the asset or owes the liability at the measurement date. ASC 820 discusses valuation techniques, such as the market approach (prices and other relevant information generated by market transactions involving identical or comparable assets, liabilities or a group of assets and liabilities such as a business), the income approach (techniques to convert future amounts to a single current amount based on market expectations about those future amounts including present value techniques and option pricing), and the cost approach (amount that would be required currently to replace the service capacity of an asset which is often referred to as a replacement cost). ASC 820 utilizes a fair value hierarchy that prioritizes the inputs to valuation techniques used to measure fair value into three broad levels. The following is a brief description of those three levels:
• | Level 1 — Quoted prices in active markets for identical assets and liabilities
• | Level 2 — Other significant observable inputs (including quoted prices in active markets for similar assets or liabilities)
• | Level 3 — Significant unobservable inputs (including the Company's own assumptions in determining the fair value)
The following table sets forth the assets and liabilities measured at fair value on a recurring basis, by input level, as of December 31, 2015 and 2014:
| December 31, 2015
| Level 1 |  | Level 2 |  | Level 3 |  | Total
| (in millions)
Location and Description |  |  |  |  |  |  |
Cash equivalents | $ | 15.7 |  |  | $ | — |  |  | $ | — |  |  | $ | 15.7 |
Other current assets (investments) | 0.1 |  |  | — |  |  | — |  |  | 0.1 |
Other current assets (other derivative agreements) | — |  |  | 44.7 |  |  | — |  |  | 44.7 |
Total Assets | $ | 15.8 |  |  | $ | 44.7 |  |  | $ | — |  |  | $ | 60.5 |
Other current liabilities (other derivative agreements) | — |  |  | (0.1 | ) |  | — |  |  | (0.1 | )
Other current liabilities (interest rate swaps) | — |  |  | (0.1 | ) |  | — |  |  | (0.1 | )
Other current liabilities (biofuel blending obligations) | — |  |  | (2.7 | ) |  | — |  |  | (2.7 | )
Total Liabilities | $ | — |  |  | $ | (2.9 | ) |  | $ | — |  |  | $ | (2.9 | )
| December 31, 2014
| Level 1 |  | Level 2 |  | Level 3 |  | Total
| (in millions)
Location and Description |  |  |  |  |  |  |
Cash equivalents | $ | 69.0 |  |  | $ | — |  |  | $ | — |  |  | $ | 69.0 |
Other current assets (investments) | 73.9 |  |  | 2.7 |  |  | — |  |  | 76.6 |
Other current assets (other derivative agreements) | — |  |  | 25.0 |  |  | — |  |  | 25.0 |
Other long-term assets (other derivative agreements) | — |  |  | 22.3 |  |  | — |  |  | 22.3 |
Total Assets | $ | 142.9 |  |  | $ | 50.0 |  |  | $ | — |  |  | $ | 192.9 |
Other current liabilities (interest rate swaps) | — |  |  | (0.8 | ) |  | — |  |  | (0.8 | )
Other current liabilities (biofuel blending obligations) | — |  |  | (49.6 | ) |  | — |  |  | (49.6 | )
Other long-term liabilities (interest rate swaps) | — |  |  | (0.2 | ) |  | — |  |  | (0.2 | )
Total Liabilities | $ | — |  |  | $ | (50.6 | ) |  | $ | — |  |  | $ | (50.6 | )
As of December 31, 2015 and 2014, the only financial assets and liabilities that are measured at fair value on a recurring basis are the Company's cash equivalents, investments, derivative instruments and uncommitted biofuel blending obligation. Additionally, the fair value of the Company's debt issuances is disclosed in Note 9 ("Long-Term Debt"). The Refining Partnership's commodity derivative contracts and uncommitted biofuel blending obligation, which use fair value measurements and are valued using broker quoted market prices of similar instruments, are considered Level 2 inputs. The Nitrogen Fertilizer Partnership has interest rate swaps that are measured at fair value on a recurring basis using Level 2 inputs. The fair value of these interest rate swap instruments are based on discounted cash flow models that incorporate the cash flows of the derivatives, as well as the current LIBOR rate and a forward LIBOR curve, along with other observable market inputs. The Company had no transfers of assets or liabilities between any of the above levels during the year ended December 31, 2015. As of December 31, 2014, the aggregate cost basis for the Company's available-for-sale securities was approximately $73.6 million following an other-than-temporary impairment of $4.7 million during the year ended December 31, 2014. During the year ended December 31, 2015, the Company received proceeds of $68.0 million for the sale of a portion of its investment in available-for-sale securities. The aggregate cost basis for the available-for-sale securities sold was approximately $47.9 million. Upon the sale of the available-for-sale securities, the Company reclassified an unrealized gain of $20.1 million from AOCI and recognized a realized gain in other income in the Consolidated Statements of Operations for the year ended December 31, 2015. At the end of the first quarter of 2015, the Company's remaining available-for-sale securities with an aggregate cost basis of approximately $25.7 million were reclassified to trading securities based on management's ability and intent with respect to the securities. In connection with the transfer to trading securities, an unrealized gain previously recorded in AOCI of $11.7 million was reclassified to other income and was reflected in the Consolidated Statements of Operations for the year ended December 31, 2015. During the second quarter of 2015, the trading securities were sold, and the Company received proceeds of $37.8 million and recognized an additional realized gain of $0.4 million in other income for the year ended December 31, 2015. As of December 31, 2015, the Company did not hold any further investments in available-for-sale securities. During the year ended December 31, 2013, the Company received proceeds of $24.7 million for the sale of its investments in marketable securities, which were previously classified as available-for-sale and reported at fair market value using quoted market prices. The aggregate cost basis for the available-for-sale securities sold was approximately $18.6 million. Upon the sale of the available-for-sale securities, the Company reclassified the unrealized gain of $6.1 million from AOCI and recognized a realized gain in other income for the year ended December 31, 2013.

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- Definition The entire disclosure for the fair value of financial instruments (as defined), including financial assets and financial liabilities (collectively, as defined), and the measurements of those instruments as well as disclosures related to the fair value of non-financial assets and liabilities. Such disclosures about the financial instruments, assets, and liabilities would include: (1) the fair value of the required items together with their carrying amounts (as appropriate); (2) for items for which it is not practicable to estimate fair value, disclosure would include: (a) information pertinent to estimating fair value (including, carrying amount, effective interest rate, and maturity, and (b) the reasons why it is not practicable to estimate fair value; (3) significant concentrations of credit risk including: (a) information about the activity, region, or economic characteristics identifying a concentration, (b) the maximum amount of loss the entity is exposed to based on the gross fair value of the related item, (c) policy for requiring collateral or other security and information as to accessing such collateral or security, and (d) the nature and brief description of such collateral or security; (4) quantitative information about market risks and how such risks are managed; (5) for items measured on both a recurring and nonrecurring basis information regarding the inputs used to develop the fair value measurement; and (6) for items presented in the financial statement for which fair value measurement is elected: (a) information necessary to understand the reasons for the election, (b) discussion of the effect of fair value changes on earnings, (c) a description of [similar groups] items for which the election is made and the relation thereof to the balance sheet, the aggregate carrying value of items included in the balance sheet that are not eligible for the election; (7) all other required (as defined) and desired information. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=36462937&loc=d3e19207-110258 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 30 -URI http://asc.fasb.org/extlink&oid=6957238&loc=d3e14172-108612 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 28 -URI http://asc.fasb.org/extlink&oid=6957238&loc=d3e14064-108612 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 21 -URI http://asc.fasb.org/extlink&oid=49121117&loc=d3e13537-108611 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 16 -URI http://asc.fasb.org/extlink&oid=49121117&loc=d3e13504-108611 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 10 -URI http://asc.fasb.org/extlink&oid=49121117&loc=d3e13433-108611 + Details
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