Consolidated Balance Sheets (Parenthetical) (USD $) In Thousands, except Per Share data	Jul. 02, 2011	Dec. 31, 2010
Consolidated Balance Sheets
Trade accounts receivable, allowance for doubtful account	$ 1,184	$ 1,389
Other intangible assets, accumulated amortization	$ 32,510	$ 28,079
Preferred stock, par value	$ 1	$ 1
Preferred stock, shares authorized	10,000	10,000
Preferred stock, shares issued	0	0
Common stock, par value	$ 0.10	$ 0.10
Common stock, shares authorized	75,000	75,000
Common stock, shares issued	15,514	15,311
Common stock, shares outstanding	15,514	15,311