XML 19 R37.htm IDEA: XBRL DOCUMENT v2.4.0.6
Assets Held for Sale (Details) (USD $)
3 Months Ended 9 Months Ended
Sep. 26, 2012
Sep. 28, 2011
Sep. 26, 2012
Sep. 28, 2011
Dec. 28, 2011
Assets Held for Sale [Abstract]          
Assets held for sale $ 1,582,000   $ 1,582,000   $ 2,351,000
Impairment charges $ 2,400,000 $ 800,000 $ 2,600,000 $ 800,000