- Definition

Investments in debt and equity securities which are categorized neither as held-to-maturity nor trading and which are intended to be sold or mature more than one year from the balance sheet date or operating cycle, if longer. Such securities are reported at fair value; unrealized gains (losses) related to Available-for-sale Securities are excluded from earnings and reported in a separate component of shareholders' equity (other comprehensive income), unless the Available-for-sale security is designated as a hedge or is determined to have had an other than temporary decline in fair value below its amortized cost basis. All or a portion of the unrealized holding gain (loss) of an Available-for-sale security that is designated as being hedged in a fair value hedge is recognized in earnings during the period of the hedge, as are other than temporary declines in fair value below the cost basis for investments in equity securities and debt securities that an entity intends to sell or it is more likely than not that it will be required to sell before the recovery of its amortized cost basis. Other than temporary declines in fair value below the cost basis for debt securities categorized as Available-for-sale that an entity does not intend to sell and for which it is not more likely than not that the entity will be required to sell before the recovery of its amortized cost basis are bifurcated into credit losses and losses related to all other factors. Other than temporary declines in fair value below cost basis related to credit losses are recognized in earnings, and losses related to all other factors are recognized in other comprehensive income.

+ References+ Details

Marketable Securities (Details) (USD $)	3 Months Ended						12 Months Ended
Marketable Securities (Details) (USD $)	Dec. 29, 2013	Mar. 31, 2013	Dec. 30, 2012	Sep. 23, 2012	Jun. 24, 2012	Mar. 25, 2012	Dec. 29, 2013 Minimum [Member]	Dec. 29, 2013 Maximum [Member]	Dec. 29, 2013 Equity Securities [Member]	Dec. 30, 2012 Equity Securities [Member]	Dec. 29, 2013 Debt Securities	Dec. 30, 2012 Debt Securities	Dec. 29, 2013 Debt Securities US Treasury Securities	Dec. 30, 2012 Debt Securities US Treasury Securities	Dec. 29, 2013 Debt Securities Corporate Debt Securities	Dec. 30, 2012 Debt Securities Corporate Debt Securities	Dec. 29, 2013 Debt Securities US Agency Securities	Dec. 30, 2012 Debt Securities US Agency Securities	Dec. 29, 2013 Debt Securities Municipal Securities	Dec. 30, 2012 Debt Securities Municipal Securities	Dec. 29, 2013 Debt Securities Certificates of Deposit	Dec. 30, 2012 Debt Securities Certificates of Deposit	Dec. 29, 2013 Debt Securities Commercial Paper	Dec. 30, 2012 Debt Securities Commercial Paper
Schedule of Held-to-maturity Securities [Line Items]
Short-term marketable securities											$ 364,880,000	$ 134,820,000	$ 143,510,000	$ 124,831,000	$ 78,991,000	$ 0	$ 31,518,000	$ 0	$ 48,035,000	$ 0	$ 31,949,000	$ 0	$ 30,877,000	$ 9,989,000
Long-term marketable securities											176,155,000	0			98,979,000	0	73,697,000	0	3,479,000	0
Available-for-sale security									0	4,444,000
Long-term marketable securities	176,155,000	190,841,000	4,444,000	0	0	0
Term of short-term investments							1 month	36 months
Proceeds from sale of securities	5,500,000
Available-for-sale securities, realized gain	1,100,000
Available for sale securities, realized gain, after tax	$ 700,000