Condensed Consolidated Statements Of Income (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended
	Mar. 30, 2013	Mar. 31, 2012
Condensed Consolidated Statements Of Income [Abstract]
Net sales	$ 44,401	$ 41,946
Cost of goods sold	19,476	18,376
Gross Profit	24,925	23,570
Selling, general and administrative expenses	19,600	18,475
Service and distribution costs	2,000	2,048
Research and development expenses	707	660
Operating Income	2,618	2,387
Interest income	2	3
Interest expense	(126)	(158)
Other (expense) income	(8)	23
Interest and Other Expense	(132)	(132)
Income Before Income Taxes	2,486	2,255
Income tax provision	846	717
Net Income	$ 1,640	$ 1,538
Net Income Per Share:
Basic	$ 0.13	$ 0.13
Diluted	$ 0.13	$ 0.12
Weighted Average Shares Outstanding:
Denominator for Basic Net Income Per Share	12,246	12,288
Effect of dilutive securities	733	605
Denominator for Diluted Net Income Per Share	12,979	12,893