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Stock-Based Compensation (Details) (USD $)
3 Months Ended 9 Months Ended
Sep. 28, 2013
Sep. 29, 2012
Sep. 28, 2013
Sep. 29, 2012
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]        
Stock-based compensation expense $ 1,236,000 $ 1,298,000 $ 3,794,000 $ 3,560,000
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Unrecognized compensation expense related to stock awards $ 5,308,000   $ 5,308,000  
Recognition period 1 year 8 months 12 days