Debt and Credit Facility (Details 2) $ / shares in Units, shares in Millions	3 Months Ended
	Jul. 02, 2016 USD ($) $ / shares shares	Jun. 27, 2015 USD ($)	Apr. 02, 2016 USD ($)
Short-term Debt [Line Items]
Amortization of Debt Discount (Premium)	$ 3,016,000	$ 3,010,000
2.625% Senior Convertible Debentures [Member]
Short-term Debt [Line Items]
Debt Instrument, Convertible, Conversion Ratio	34.6495
Base conversion, block amount of senior convertible debenture	$ 1,000
Convertible debt, conversion price | $ / shares	$ 28.8604
Debt Instrument, Face Amount	$ 600,000,000		$ 600,000,000
Debt Instrument, Unamortized Discount	14,249,000		18,135,000
Hedge Accounting Adjustment - Sale Of Interest Rate Swap	4,118,000		5,241,000
Deferred Finance Costs, Own-share Lending Arrangement, Issuance Costs, Net	1,327,000		1,689,000
Debt Instrument Carrying Amount Of Liability Component	588,542,000		585,417,000
Debt Instrument, Convertible, Carrying Amount of Equity Component	$ 66,415,000		$ 66,415,000
Debt Instrument, Convertible, Remaining Discount Amortization Period	11 months 17 days
Debt instrument, Convertible, If-converted Value	$ 967,500,000
Interest Expense, Debt, Excluding Amortization	3,938,000	3,938,000
Amortization of Financing Costs	362,000	362,000
Amortization of Debt Discount (Premium)	2,763,000	2,763,000
Interest Expense, Debt	$ 7,063,000	$ 7,063,000
Maximum number of common shares to be purchased under call option | shares	20.8
Price Per Share To Be Purchase By Company Under Call Option | $ / shares	$ 28.86
Warrants, number of shares the holders have the right to purchase | shares	20.8
Class of Warrant or Right, Exercise Price of Warrants or Rights | $ / shares	$ 40.89