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Financial Instruments (Tables) | 9 Months Ended
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Sep. 30, 2012
Financial Instruments, Financial Assets, Balance Sheet Groupings [Abstract] |
Fair value assets and liabilities measured on recurring basis | The following tables provide a summary of the Company’s significant financial assets and liabilities carried at fair value and measured on a recurring basis as of September 30, 2012 and January 1, 2012 (in thousands):
|  |  | Fair Value Measurements at September 30, 2012
| Total Carrying Value at September 30, 2012 |  | Quoted Prices in Active Markets (Level 1) |  | Significant Other Observable Inputs (Level 2) |  | Significant Unobservable Inputs (Level 3)
Assets: |  |  |  |  |  |  |
Interest rate swap derivative assets | $ | 6,997 |  |  | $ | — |  |  | $ | 6,997 |  |  | $ | — |
Restricted investments: |  |  |  |  |  |  |
Guaranteed Investment Contract | 5,742 |  |  | — |  |  | 5,742 |  |  | — |
Rabbi Trust | 9,341 |  |  | 9,341 |  |  | — |  |  | — |
Fixed income securities | 2,172 |  |  | — |  |  | 2,172 |  |  | — |
Liabilities: |  |  |  |  |  |  |
Interest rate swap derivative liabilities | $ | 747 |  |  | $ | — |  |  | $ | 747 |  |  | $ | — |
|  |  | Fair Value Measurements at January 1, 2012
| Total Carrying Value at January 1, 2012 |  | Quoted Prices in Active Markets (Level 1) |  | Significant Other Observable Inputs (Level 2) |  | Significant Unobservable Inputs (Level 3)
Assets: |  |  |  |  |  |  |
Interest rate swap derivative assets | $ | 7,440 |  |  | $ | — |  |  | $ | 7,440 |  |  | $ | — |
Restricted investments: |  |  |  |  |  |  |
Guaranteed Investment Contract | 5,742 |  |  | — |  |  | 5,742 |  |  | — |
Guaranteed Repurchase Agreements | 33,821 |  |  | — |  |  | 33,821 |  |  | — |
Rabbi Trust | 8,016 |  |  | 5,898 |  |  | 2,118 |  |  | — |
Fixed income securities | 2,013 |  |  | — |  |  | 2,013 |  |  | — |

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- Definition Tabular disclosure of assets and liabilities, including [financial] instruments measured at fair value that are classified in stockholders' equity, if any, that are measured at fair value on a recurring basis. The disclosures contemplated herein include the fair value measurements at the reporting date by the level within the fair value hierarchy in which the fair value measurements in their entirety fall, segregating fair value measurements using quoted prices in active markets for identical assets (Level 1), significant other observable inputs (Level 2), and significant unobservable inputs (Level 3). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=7578670&loc=d3e19190-110258 + Details
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