Quarterly report pursuant to Section 13 or 15(d)

Deferred Gain (Details)

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Deferred Gain (Details) (USD $)
In Thousands, unless otherwise specified
3 Months Ended 9 Months Ended
Sep. 29, 2012
Oct. 01, 2011
Sep. 29, 2012
Oct. 01, 2011
Sep. 25, 2009
Deferred Revenue Disclosure [Abstract]          
Deferred gain of sale-leaseback transaction         $ 2,436
Initial lease period for amortization of deferred gain (in years)     5 years    
Amortization of leased asset $ 122 $ 122 $ 366 $ 366