Unaudited Condensed Consolidated Balance Sheets (Parenthetical) (USD $) In Thousands, except Share data, unless otherwise specified	Sep. 28, 2012	Mar. 30, 2012
Unaudited Condensed Consolidated Balance Sheets (Parenthetical)
Allowance for doubtful accounts	$ 3,647	$ 3,410
Accumulated depreciation	145,024	134,235
Accumulated amortization	$ 18,168	$ 14,037
Preferred stock par value per share	$ 0.01	$ 0.01
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 per share	$ 0.01	$ 0.01
Common stock shares authorized	150,000,000	150,000,000
Common stock shares issued	50,313,887	50,312,323
Common stock shares outstanding	50,313,887	50,312,323