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Consolidated Statements of Stockholders' Equity (Parenthetical) (USD $)
In Thousands, unless otherwise specified
12 Months Ended
Dec. 25, 2011
Dec. 26, 2010
Dec. 27, 2009
Change in valuation of interest rate swap agreements, tax $ 93 $ 1,352 $ 781
Accumulated other comprehensive income (loss) 1,849 849 (1,084)
Unrealized gain (loss) on the interest rate swap agreements 6 (159) (2,563)
Pension plan liability 29   52
Unrealized foreign currency translation gains $ 1,872 $ 1,008 $ 1,531