Condensed Consolidated Balance Sheets (Parenthetical) (USD $) In Thousands, except Share data, unless otherwise specified	Oct. 04, 2013	Dec. 28, 2012
Condensed Consolidated Balance Sheets [Abstract]
Trade receivables, allowances	$ 15,048	$ 14,891
Property, plant and equipment, accumulated depreciation	241,802	228,079
Purchased intangibles, accumulated amortization	$ 92,378	$ 83,555
Preferred stock, par value	$ 0.01	$ 0.01
Preferred stock, shares authorized	2,000,000	2,000,000
Preferred stock, shares issued	0	0
Preferred stock, shares outstanding	0	0
Class A common stock, par value	$ 0.01	$ 0.01
Class A common stock, shares authorized	600,000,000	600,000,000
Class A common stock, shares issued	127,679,012	126,249,768
Class A common stock, shares outstanding	127,679,012	126,249,768