Quarterly report pursuant to Section 13 or 15(d)

Consolidated Condensed Statements of Operations and Retained Earnings (Unaudited) (Parenthetical)

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Consolidated Condensed Statements of Operations and Retained Earnings (Unaudited) (Parenthetical) (USD $)
In Thousands
3 Months Ended 9 Months Ended
Oct. 01, 2011
Oct. 02, 2010
Oct. 01, 2011
Oct. 02, 2010
Costs and Expenses:        
Interest income $ 82 $ 7 $ 96 $ 24