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Consolidated Balance Sheets (Parenthetical) (USD $)
In Thousands, except Share data, unless otherwise specified
Sep. 27, 2013
Sep. 28, 2012
Property, plant and equipment, accumulated depreciation $ 103,314 $ 98,235
Preferred stock issued 0 0
Treasury stock, shares 34,766 516
Class A [Member]
   
Common stock, shares issued 8,724,984 8,676,703
Common stock, shares outstanding 8,724,984 8,676,703
Class B [Member]
   
Common stock, shares issued 1,212,420 1,215,758
Common stock, shares outstanding 1,212,420 1,215,758