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Derivative Instruments (Tables) | 12 Months Ended
--- | ---
Dec. 31, 2014
Derivative Instruments and Hedging Activities Disclosure [Abstract] |
Fair Value Of Derivative Instruments | The following table summarizes the fair value of these derivative instruments (in thousands):
| 2014 | 2013
Fair Value: |  |
Other Assets | $ | 10,253 |  | $ | 3,538 |
Other Liabilities | 10,253 |  | 3,538 |
Change In Fair Value Of Derivative Instruments | The following table summarizes the change in fair value of these derivative instruments (in thousands):
| Year Ended December 31,
| 2014 | 2013 | 2012
Change in Fair Value: |  |  |
Other income - derivative asset | $ | 6,811 |  | $ | (10,148 | ) | $ | 1,921 |
Other income - derivative liability | (6,811 | ) | 10,148 |  | (1,921 | )
Offsetting Assets | Information about financial instruments that are eligible for offset in the consolidated balance sheet as of December 31, 2014 is presented in the following tables (in thousands):
|  |  |  | Gross Amounts |  |
|  |  |  | Not Offset in the Statement |  |
|  |  |  | of Financial Position |  |
|  |  |  |  |  | Total |
|  |  |  |  |  | of Gross |
|  |  |  |  |  | Amounts |
|  |  |  |  |  | Not Offset in |
|  |  |  |  |  | the Statement |
|  |  |  |  |  | of Financial |
|  |  |  |  |  | Position |
|  |  |  | Netting |  | Including |
|  | Gross | Net Amounts | Adjustment |  | Applicable |
|  | Amounts | of Assets | per |  | Netting |
| Gross | Offset in the | presented in | Applicable |  | Agreement |
| Amounts of | Statement of | the Statement | Master | Fair Value | and Fair |
| Recognized | Financial | of Financial | Netting | of Financial | Value of |
Description | Assets | Position | Position | Arrangements | Collateral | Collateral | Net Amount
| (a) | (b) | (c)=(a)-(b) |  |  | (d) | (c)-(d)
Derivative assets: |  |  |  |  |  |  |
Interest rate swap agreements | $ | 10,253 |  | $ | — |  | $ | 10,253 |  | $ | — |  | $ | 10,253 |  | $ | 10,253 |  | $ | — |
Offsetting Liabilities |
|  |  |  | Gross Amounts |  |
|  |  |  | Not Offset in the Statement |  |
|  |  |  | of Financial Position |  |
|  |  |  |  |  | Total |
|  |  |  |  |  | of Gross |
|  |  |  |  |  | Amounts |
|  |  |  |  |  | Not Offset in |
|  |  |  |  |  | the Statement |
|  |  |  |  |  | of Financial |
|  |  |  |  |  | Position |
|  |  |  | Netting |  | Including |
|  | Gross | Net Amounts | Adjustment |  | Applicable |
|  | Amounts | of Liabilities | per |  | Netting |
| Gross | Offset in the | presented in | Applicable |  | Agreement |
| Amounts of | Statement of | the Statement | Master | Fair Value | and Fair |
| Recognized | Financial | of Financial | Netting | of Financial | Value of |
Description | Liabilities | Position | Position | Arrangements | Collateral | Collateral | Net Amount
| (a) | (b) | (c)=(a)-(b) |  |  | (d) | (c)-(d)
Derivative liabilities: |  |  |  |  |  |
Interest rate swap agreements | $ | 10,253 |  | $ | — |  | $ | 10,253 |  | $ | — |  | $ | 13,264 |  | $ | 13,264 |  | $ | — |

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