Consolidated Balance Sheets (Parenthetical) (USD $) In Thousands, except Share data, unless otherwise specified	Jan. 26, 2014	Jan. 27, 2013
Statement of Financial Position [Abstract]
Allowance for doubtful accounts	$ 3,825	$ 4,917
Accumulated depreciation	$ 112,610	$ 101,766
Common stock, par value	$ 0.01	$ 0.01
Common stock, shares authorized	250,000,000	250,000,000
Common stock, shares issued	78,136,144	78,136,144
Common stock, shares outstanding	67,283,221	66,607,347
Treasury stock, at cost, shares	10,852,923	11,528,797