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Consolidated Statements Of Comprehensive Income (Loss) And Stockholders' Equity (Parenthetical) (USD $)
In Thousands, unless otherwise specified
12 Months Ended
Dec. 31, 2011
Jan. 01, 2011
Jan. 02, 2010
Consolidated Statements Of Comprehensive Income (Loss) And Stockholders' Equity [Abstract]      
Unrecognized net pension loss, tax $ 503 $ 489 $ 186
Unrealized gain (loss) on marketable securities, tax     $ 600