CONDENSED CONSOLIDATED BALANCE SHEETS (Parenthetical) (USD $) In Thousands, except Share data	Jul. 02, 2011	Jan. 01, 2011
Accounts receivable, reserve for doubtful accounts	$ 8,302	$ 7,975
Property, plant and equipment, accumulated depreciation	$ 51,326	$ 47,355
Preferred stock, par value	$ 0.01	$ 0.01
Preferred stock, shares authorized	2,000,000	2,000,000
Preferred stock, issued	0	0
Common stock, par value	$ 0.01	$ 0.01
Common stock, shares authorized	47,500,000	47,500,000
Common stock, shares issued	23,094,964	22,691,821
Treasury stock, shares	4,347,360	4,233,810