Consolidated Balance Sheets (Unaudited) (Parenthetical) (USD $) In Thousands, except Share data, unless otherwise specified	Jul. 01, 2012	Apr. 01, 2012
Condensed Consolidated Balance Sheets [Abstract]
Allowance for doubtful accounts	$ 1,474	$ 1,446
Preferred stock, par value	$ 0.001	$ 0.001
Preferred stock, shares authorized	1,000,000	1,000,000
Preferred stock, shares issued
Preferred stock, shares outstanding
Common stock, par value	$ 0.001	$ 0.001
Common stock, shares authorized	500,000,000	500,000,000
Common stock, shares issued	211,466,000	210,688,000
Treasury stock, shares	115,718,000	111,911,000