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Fair Value of Financial Instruments (Tables) | 9 Months Ended
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Sep. 26, 2018
Fair Value Disclosures [Abstract] |
Financial assets and liabilities measured at fair value on a recurring basis | Financial assets and liabilities measured at fair value on a recurring basis are summarized below:
| Total |  | Quoted Prices in Active Markets for Identical Assets/Liabilities (Level 1) |  | Significant Other Observable Inputs (Level 2) |  | Significant Unobservable Inputs (Level 3)
| (In thousands)
Fair value measurements as of September 26, 2018: |  |  |  |  |  |  |
Deferred compensation plan investments (1) | $ | 12,808 |  |  | $ | 12,808 |  |  | $ | — |  |  | $ | — |
Interest rate swaps, net (2) | 4,280 |  |  | — |  |  | 4,280 |  |  | — |
Investments (3) | 1,709 |  |  | — |  |  | 1,709 |  |  | — |
Total | $ | 18,797 |  |  | $ | 12,808 |  |  | $ | 5,989 |  |  | $ | — |
Fair value measurements as of December 27, 2017: |  |  |  |  |  |  |
Deferred compensation plan investments (1) | $ | 12,663 |  |  | $ | 12,663 |  |  | $ | — |  |  | $ | — |
Interest rate swaps, net (2) | (2,187 | ) |  | — |  |  | (2,187 | ) |  | — |
Total | $ | 10,476 |  |  | $ | 12,663 |  |  | $ | (2,187 | ) |  | $ | — |
(1) | The fair values of our deferred compensation plan investments are based on the closing market prices of the elected investments.
(2) | The fair values of our interest rate swaps are based upon Level 2 inputs, which include valuation models as reported by our counterparties. The key inputs for the valuation models are quoted market prices, interest rates and forward yield curves. See Note 9 for details on the interest rate swaps.
(3) | The fair value of investments is valued using a readily determinable net asset value per share based on the fair value of the underlying securities. There are no significant redemption restrictions associated with these investments.

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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://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=99377789&loc=d3e19190-110258 + Details
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