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Stockholders' Equity (Details 2) (USD $) In Thousands, unless otherwise specified | 3 Months Ended
--- | ---
Mar. 30, 2013 | Mar. 31, 2012
Amounts Reclassified from AOCI |  |
Interest expense | $ (842) | $ (33)
Income before income taxes | 20,078 | 17,117
Income tax benefit | (44) | (2,797)
Net income | 20,034 | 14,320
Losses on cash flow hedge | Reclassifications From Accumulated Other Comprehensive Loss |  |
Amounts Reclassified from AOCI |  |
Rent expense |  | (433)
Interest expense | (181) |
Income before income taxes | (181) | (433)
Income tax benefit | 63 | 152
Net income | $ (118) | $ (281)

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