Condensed Quarterly Results (Unaudited) (Details) (USD $)	3 Months Ended								12 Months Ended
	Apr. 01, 2012	Jan. 01, 2012	Oct. 02, 2011	Jul. 03, 2011	Apr. 03, 2011	Dec. 26, 2010	Sep. 26, 2010	Jun. 27, 2010	Apr. 01, 2012	Apr. 03, 2011	Mar. 28, 2010
Quarterly financial information
Net revenues	$ 135,073,000	$ 142,779,000	$ 136,275,000	$ 144,481,000	$ 146,069,000	$ 146,256,000	$ 135,376,000	$ 130,674,000	$ 558,608,000	$ 558,375,000	$ 518,471,000
Gross profit	91,348,000	97,013,000	92,930,000	99,613,000	100,012,000	99,170,000	92,438,000	89,796,000	380,904,000	381,416,000	351,364,000
Operating income	28,965,000	34,123,000	30,502,000	35,877,000	39,107,000	41,394,000	35,887,000	31,323,000	129,467,000	147,711,000	126,289,000
Income from continuing operations	29,519,000	29,221,000	26,507,000	34,196,000	36,790,000	49,181,000	29,163,000	26,212,000	119,443,000	141,346,000	67,545,000
Net income	138,331,000	30,025,000	28,654,000	32,426,000	33,316,000	50,339,000	29,986,000	25,449,000	229,436,000	139,090,000	54,948,000
Income from continuing operations per share:
Basic	$ 0.30	$ 0.29	$ 0.26	$ 0.33	$ 0.35	$ 0.46	$ 0.27	$ 0.24	$ 1.17	$ 1.31	$ 0.58
Diluted	$ 0.29	$ 0.29	$ 0.26	$ 0.32	$ 0.34	$ 0.46	$ 0.27	$ 0.23	$ 1.16	$ 1.29	$ 0.58
Net income per share
Basic	$ 1.40	$ 0.30	$ 0.28	$ 0.31	$ 0.32	$ 0.48	$ 0.28	$ 0.23	$ 2.25	$ 1.29	$ 0.47
Diluted	$ 1.37	$ 0.30	$ 0.28	$ 0.31	$ 0.31	$ 0.47	$ 0.28	$ 0.22	$ 2.23	$ 1.27	$ 0.47
Condensed Quarterly Results (Textual) [Abstract]
Other Income Tax Benefit						15,000,000
Gain on sale of business	$ 109,083,000								$ 109,083,000