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Consolidated Statements of Comprehensive Income (USD $)
In Thousands, unless otherwise specified
 3 Months Ended 12 Months Ended
Dec. 27, 2013
Sep. 27, 2013
Jun. 28, 2013
Mar. 29, 2013
Dec. 28, 2012
Sep. 28, 2012
Jun. 29, 2012
Mar. 30, 2012
Dec. 27, 2013
Dec. 28, 2012
Dec. 30, 2011
Consolidated Statements of Comprehensive Income [Abstract]                      
Net income $ 1,206 $ 2,635 $ 2,930 $ 1,958 $ 6,683 [1] $ 2,636 [1] $ 3,845 [1] $ 3,533 [1] $ 8,729 $ 16,697 $ 21,769
Foreign currency translation adjustment                 53 938 (411)
Total comprehensive income                 $ 8,782 $ 17,635 $ 21,358
[1] The quarter ended December 28, 2012 included the benefit of the release of $6.7 million of deferred income tax asset valuation allowance. Quarterly basic and diluted net income per common share were computed independently for each quarter and do not necessarily total to the year to date basic and diluted net income per common share.