Condensed Consolidated Balance Sheets (Unaudited) (Parenthetical) - USD ($) $ in Thousands	Sep. 27, 2015	Mar. 29, 2015
Statement Of Financial Position [Abstract]
Allowance for doubtful accounts	$ 868	$ 1,297
Preferred stock, par value	$ 0.001	$ 0.001
Preferred stock, shares authorized	1,000,000	1,000,000
Preferred stock, shares issued	0	0
Preferred stock, shares outstanding	0	0
Common stock, par value	$ 0.001	$ 0.001
Common stock, shares authorized	500,000,000	500,000,000
Common stock, shares issued	217,782,000	215,549,000
Treasury stock, shares	132,557,000	128,329,000