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Fair Value Measurement (Tables) | 6 Months Ended
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Jun. 29, 2013
Fair Value Disclosures [Abstract] |
Fair value measured on recurring basis | The fair value hierarchy has three levels based on the reliability of the inputs used to determine the fair value.
|  | Fair Value Measurements at June 29, 2013 Using
|  | Quoted Prices in Active Markets for Identical Assets | Significant Other Observable Inputs | Significant Unobservable Inputs
(In thousands of dollars) | Total | (Level 1) | (Level 2) | (Level 3)
Assets: |  |  |  |
Derivative instruments | $ | 2,722 |  | $ | — |  | $ | 2,722 |  | $ | — |
Total Assets | $ | 2,722 |  | $ | — |  | $ | 2,722 |  | $ | — |
Liabilities: |  |  |  |
Derivative instruments | $ | 290 |  | $ | — |  | $ | 290 |  | $ | — |
Senior Notes | 276,563 |  | — |  | 276,563 |  | — |
Total Liabilities | $ | 276,853 |  | $ | — |  | $ | 276,853 |  | $ | — |

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- Definition The entire disclosure of the fair value measurement of assets and liabilities, which includes financial instruments measured at fair value that are classified in shareholders' equity, which may be measured on a recurring or nonrecurring basis. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=25499696&loc=d3e19279-110258 Reference 2: 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=25499696&loc=d3e19190-110258 Reference 3: 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=25499696&loc=d3e19207-110258 + Details
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