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Consolidated Statements of Comprehensive Income Consolidated Statements of Comprehensive Income (Parenthetical) (USD $)
In Thousands, unless otherwise specified
3 Months Ended 6 Months Ended
Dec. 28, 2014
Dec. 29, 2013
Dec. 28, 2014
Dec. 29, 2013
Statement of Comprehensive Income [Abstract]        
Tax benefit (expense) on net unrealized (loss) gain on available-for-sale securities $ 489us-gaap_OtherComprehensiveIncomeLossAvailableForSaleSecuritiesTax $ (283)us-gaap_OtherComprehensiveIncomeLossAvailableForSaleSecuritiesTax $ 827us-gaap_OtherComprehensiveIncomeLossAvailableForSaleSecuritiesTax $ (1,065)us-gaap_OtherComprehensiveIncomeLossAvailableForSaleSecuritiesTax