Consolidated Statements Of Income (USD $) In Thousands, except Per Share data, unless otherwise specified	12 Months Ended
	Dec. 29, 2012	Dec. 31, 2011	Jan. 01, 2011
Condensed Consolidated Statements Of Income [Abstract]
Net sales	$ 180,508	$ 174,637	$ 158,312
Cost of goods sold	81,198	77,613	70,090
Gross Profit	99,310	97,024	88,222
Selling, general and administrative expenses	75,154	74,451	68,817
Service and distribution costs	8,174	7,830	7,524
Research and development expenses	2,708	2,697	2,811
Operating Income	13,274	12,046	9,070
Interest income	16	12	25
Interest expense	(525)	(661)	(975)
Other expense	(6)	(248)	(270)
Interest and Other Expense	(515)	(897)	(1,220)
Income Before Income Taxes	12,759	11,149	7,850
Income tax provision	3,611	2,839	1,642
Net Income	$ 9,148	$ 8,310	$ 6,208
Net Income Per Share:
Basic	$ 0.74	$ 0.68	$ 0.49
Diluted	$ 0.70	$ 0.64	$ 0.48
Weighted Average Shares Outstanding:
Denominator for Basic Net Income Per Share	12,335	12,195	12,686
Effect of dilutive securities	714	810	379
Denominator for Diluted Net Income Per Share	13,049	13,005	13,065