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Derivative Instruments | 12 Months Ended
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Dec. 31, 2013
Derivative Instruments (Abstract) |
Derivative Instruments | 8. Derivative Instruments The Partnership had entered into fourteen interest rate swap agreements in order to mitigate the exposure from interest rate fluctuations. Nine of the Partnership's interest rate swap agreements under its $370,000 credit facility expired as of June 29, 2012 and one was terminated upon the disposal of the M/T Attikos and the M/T Aristofanis. During the year ended December 31, 2012, the Partnership terminated one interest rate swap agreement in full and one partially under its $350,000 credit facility. During the year ended December 31, 2013, the Partnership's three remaining swaps with a notional amount of $59,084 expired. All derivatives are carried at fair value on the consolidated balance sheet at each period end. Balances as of December 31, 2013 and December 31, 2012 are as follows:
|  | December 31, 2013 |  |  | December 31, 2012 |
|  | Interest Rate Swaps |  |  | Total |  |  | Interest Rate Swaps |  |  | Total |
Short-term liabilities |  | $ | - |  |  | $ | - |  |  | $ | 467 |  |  | $ | 467 |
Long-term liabilities |  | $ | - |  |  | $ | - |  |  | $ | - |  |  | $ |  |
Total |  | $ | - |  |  | $ | - |  |  | $ | 467 |  |  | $ | 467 |
Tabular disclosure of financial instruments is as follows:
Derivative Liabilities |  |  |  |  |  |
Balance sheet location |  | As of December 31, 2013 Fair value |  |  | As of December 31, 2012 Fair value |
Derivatives designated as hedging instruments - effective hedges |  |  |  |  |  |  |  |
Derivative instruments long-term liabilities. |  | $ | - |  |  | $ | - |
Derivative instruments short-term liabilities. |  | $ | - |  |  | $ | 100 |
Total derivatives not designated as hedging instruments - ineffective hedges |  |  |  |  |  |  |  |
Derivative instruments short-term liabilities. |  | $ | - |  |  | $ | 367 |
Total Derivative Liabilities |  | $ | - |  |  | $ | 467 |
The table below shows the effective portion of the hedging relationship of the Partnership's derivatives designated as hedging instruments recognized in Other Comprehensive Income (“OCI”), the realized losses from net interest rate settlements transferred from OCI into the Partnership's consolidated statements of comprehensive income / (loss) and the amounts recognized in the consolidated statements of comprehensive income / (loss) arising from the hedging relationships not qualifying for hedge accounting for the years ended December 31, 2013, 2012 and 2011, respectively:
Derivatives designated in cash flow hedging relationships recognized in OCI (Effective Portion) | Change in Fair Value of Hedging instrument recognized in OCI (Effective Portion) | Location of Gain/(loss) Reclassified into consolidated statements of comprehensive /income (Effective Portion) | Amount of Loss Reclassified from OCI into consolidated statements of comprehensive income (Effective Portion) | Amount of Gain recorded in OCI (Effective Portion) | Location of Gain/(loss) Recognized in the consolidated statements of comprehensive /income (ineffective portion) | Amount of Gain/(Loss) recognized the consolidated statements of comprehensive / income
| 2013 | 2012 | 2011 |  | 2013 | 2012 | 2011 | 2013 | 2012 | 2011 |  | 2013 | 2012 | 2011
Interest rate swaps | (4 | )(1,903) | (4,234 | )Interest expense and finance cost | (466 | )(12,665) | (21,752 | )462 | 10,762 | 17,518 |  | 4 | 1,448 | 2,310
The Partnership follows the accounting guidance for derivative instruments that establishes a framework for measuring fair value in generally accepted accounting principles, and expands disclosure about fair value measurements. This guidance enables the reader of the financial statements to assess the inputs used to develop those measurements by establishing hierarchy for ranking the quality and reliability of the information used to determine fair values. The statement requires that assets and liabilities carried at fair value will be classified and disclosed in one of the following three categories: Level 1: Inputs are quoted prices (unadjusted) in active markets for identical assets or liabilities that the reporting entity has the ability to access at the measurement date; Level 2: Inputs are inputs other than quoted prices included within Level 1 that are observable for the asset or liability, either directly or indirectly; Level 3: Inputs are unobservable inputs for the asset or liability. The Partnership's interest rate swap agreements, entered into pursuant to its loan agreements, are based on LIBOR swap rates. LIBOR swap rates are observable at commonly quoted intervals for the full terms of the swaps and therefore are considered Level 2 items. The fair values of the interest rate swap determined through Level 2 of the fair value hierarchy are derived principally from or corroborated by observable market data. Inputs include quoted prices for similar assets, liabilities (risk adjusted) and market-corroborated inputs, such as market comparable, interest rates, yield curves and other items that allow value to be determined. Fair value of the interest rate swaps is determined using a discounted cash flow method based on market-base LIBOR swap yield curves. The fair value of the Partnership's interest rate swaps is the estimated value of the swap agreements at the reporting date, taking into account current interest rates and the forward yield curve and the creditworthiness of the Partnership and its counterparties.
Derivatives |  | Total |  |  | Quoted Prices in Active Markets for Identical Assets (Level 1) |  |  | Significant Other Observable Inputs (Level 2) |  |  | Significant Unobservable Inputs (Level 3) |
December 31, 2012 |  | $ | 467 |  |  |  | — |  |  | $ | 467 |  |  |  | — |
December 31, 2013 |  | $ | — |  |  |  | — |  |  | $ | — |  |  |  | — |
Since March 31, 2012 and May 23, 2012 two out of three interest rate swaps did not qualify as cash flow hedges and the changes in their fair value was recognized in the consolidated statements of comprehensive income / (loss) whilst the third interest rate swap agreement qualified as a cash flow hedge and the changes in its fair value is recognized in accumulated other comprehensive income / (loss). As a result the amount of $1,400 and $50, which was part of the Partnership's accumulated other comprehensive income / (loss) (“OCL”) as of March 31, 2012 and May 23, 2012 respectively, were attributable to the two ineffective hedges and were being amortized over their respective remaining term up to their maturity date March 27, 2013 and March 28, 2013, respectively in the Partnership's consolidated statements of comprehensive income by using the effective interest rate method. The net result of the accumulated OCL amortization and the change of the fair value of certain interest rate swap agreements of $4, $1,448 and $2,310 is presented under other non operating income (expense) net as a “Gain on interest rate swap agreement” in the Partnership's consolidated statements of comprehensive income/(loss)for the years ended December 31, 2013, 2012 and 2011, respectively.

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- Definition The entire disclosure for derivative instruments and hedging activities including, but not limited to, risk management strategies, non-hedging derivative instruments, assets, liabilities, revenue and expenses, and methodologies and assumptions used in determining the amounts. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4K -URI http://asc.fasb.org/extlink&oid=7476318&loc=SL5708775-113959 Reference 2: 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 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08.(n)) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4J -URI http://asc.fasb.org/extlink&oid=7476318&loc=SL5708773-113959 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 25 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6886632&loc=d3e76258-113986 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=7476318&loc=d3e41635-113959 Reference 7: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4H -URI http://asc.fasb.org/extlink&oid=7476318&loc=SL5624258-113959 Reference 8: 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 Reference 9: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 30 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6441202&loc=d3e80720-113993 Reference 10: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 30 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=7668309&loc=d3e80748-113994 Reference 11: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4E -URI http://asc.fasb.org/extlink&oid=7476318&loc=SL5624181-113959 Reference 12: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 30 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=7668309&loc=d3e80784-113994 Reference 13: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=7476318&loc=d3e41620-113959 Reference 14: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4D -URI http://asc.fasb.org/extlink&oid=7476318&loc=SL5624177-113959 Reference 15: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 1A -URI http://asc.fasb.org/extlink&oid=7476318&loc=SL5579245-113959 Reference 16: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 1B -URI http://asc.fasb.org/extlink&oid=7476318&loc=SL5580258-113959 Reference 17: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=7476318&loc=SL5579240-113959 Reference 18: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=7476318&loc=d3e41641-113959 Reference 19: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=7476318&loc=d3e41638-113959 Reference 20: 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=7476318&loc=SL5624171-113959 + Details
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