Debt (Details Textual) (USD $)	3 Months Ended		9 Months Ended				63 Months Ended
	Dec. 28, 2013	Dec. 29, 2012	Dec. 28, 2013	Dec. 29, 2012	Dec. 28, 2013 Convertible Notes Due 2014 [Member]	Dec. 29, 2012 Convertible Notes Due 2014 [Member]	Dec. 28, 2013 Convertible Notes Due 2014 [Member]	Mar. 30, 2013 Convertible Notes Due 2014 [Member]	Dec. 28, 2013 Convertible Notes Due 2014 [Member] Private Offerings, Resale and Trading through Automated Linkages [Member]	Mar. 30, 2013 Convertible Notes Due 2014 [Member] Private Offerings, Resale and Trading through Automated Linkages [Member]	Dec. 28, 2013 Credit Agreement [Member]	Dec. 28, 2013 Revolving Credit Facility [Member]	Dec. 28, 2013 Standby Letters of Credit [Member]	Dec. 28, 2013 Swingline Loan [Member]
Debt (Textual)
Maturity date of the Convertible Notes					Apr. 15, 2014
Convertible subordinated notes carrying value					$ 85,900,000		$ 85,900,000	$ 82,000,000
Extinguishment of debt, principal amount						47,400,000	87,500,000
Debt Instrument Average Price Per Share						$ 98.34
Loss on retirement of convertible subordinated notes	0	0	0	(2,756,000)		(2,800,000)
Fair value of convertible notes									87,300,000	86,700,000
Line of Credit Facility, Maximum Borrowing Capacity												125,000,000	5,000,000	5,000,000
Line of Credit Facility, Maximum amount of increase that may be requested												50,000,000
Line of Credit Facility, Amount Outstanding											$ 0