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Condensed Consolidated Statements of Comprehensive Earnings (Unaudited) (Parentheticals) (USD $)
3 Months Ended 9 Months Ended
Apr. 01, 2012
Mar. 27, 2011
Apr. 01, 2012
Mar. 27, 2011
Tax on unrealized gain (loss) on available-for-sale securities $ 24,023 $ (12,065) $ (47,184) $ 219,519