Income Taxes (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Jan. 01, 2012	Jan. 02, 2011	Jan. 01, 2012	Jan. 02, 2011
Income Taxes
Effective tax rates (as a percent)	42.00%	30.70%	35.80%	26.70%
Income Taxes
Potential reduction of uncertain tax benefits over the next 12 months from audit settlements	$ 15,128		$ 15,128
Maximum
Income Taxes
Increase in earnings from settlement of unrecognized tax benefits based on current estimates			12,715
Minimum
Income Taxes
Increase in earnings from settlement of unrecognized tax benefits based on current estimates			$ 0