Debt and Credit Facility (Details 1) (USD $)	3 Months Ended		9 Months Ended		12 Months Ended
	Dec. 27, 2014	Dec. 28, 2013	Dec. 27, 2014	Dec. 28, 2013	Mar. 29, 2014
Debt Instrument [Line Items]
Amortization of Debt Discount (Premium)			$ 9,014,000	$ 12,144,000
Line of Credit Facility, Expiration Date			Dec. 31, 2016
Line of Credit Facility, Maximum Borrowing Capacity	250,000,000		250,000,000
Line of Credit Facility, Average Outstanding Amount			0
2019 and 2021 Notes Payable [Member]
Debt Instrument [Line Items]
Interest Expense, Debt, Excluding Amortization	6,406,000	0	19,219,000	0
Amortization of Financing Costs	146,000	0	436,000	0
Amortization of Debt Discount (Premium)	244,000	0	725,000	0
Interest Expense, Debt	6,796,000	0	20,380,000	0
Proceeds from Issuance of Long-term Debt					990,100,000
2019 Notes Payable [Member]
Debt Instrument [Line Items]
Debt Instrument, Face Amount	500,000,000		500,000,000		500,000,000
Debt Instrument, Unamortized Discount	$ 2,199,000		$ 2,199,000		$ 2,574,000