CONSOLIDATED CONDENSED BALANCE SHEETS [Parenthetical] (USD $) In Thousands, except Share data, unless otherwise specified	Oct. 06, 2012	Dec. 31, 2011	Oct. 01, 2011
Receivables allowance (in dollars)	$ 979	$ 938	$ 920
Preferred stock, shares authorized	1,000,000	1,000,000	1,000,000
Preferred stock, shares issued	0	0	0
Common stock, shares authorized	30,000,000	30,000,000	30,000,000
Common stock, shares issued	13,413,094	12,883,948	12,876,806
Common stock, shares outstanding	13,413,094	12,883,948	12,876,806