Interest and Other Expense, Net (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Dec. 29, 2012	Dec. 31, 2011	Dec. 29, 2012	Dec. 31, 2011
Components of interest and other expense
Interest income	$ 7,120	$ 5,886	$ 19,183	$ 17,428
Interest expense	(13,517)	(13,654)	(41,543)	(40,902)
Other income (expense), net	1,248	581	(2,464)	(122)
Interest and other expense, net	$ (5,149)	$ (7,187)	$ (24,824)	$ (23,596)