Condensed Consolidated Statements Of Operations (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 28, 2013	Sep. 29, 2012	Sep. 28, 2013	Sep. 29, 2012
Condensed Consolidated Statements Of Operations [Abstract]
Net sales	$ 24,569	$ 19,449	$ 80,824	$ 66,952
Cost of goods sold	10,156	7,978	33,187	27,493
Gross Profit	14,413	11,471	47,637	39,459
Selling, general and administrative expenses	12,328	8,722	33,648	27,049
Service and distribution costs	1,519	1,063	4,000	3,225
Research and development expenses	373	255	1,106	813
Operating Income	193	1,431	8,883	8,372
Interest and other expense	(128)	(102)	(404)	(522)
Interest and Other Expense	(128)	(102)	(404)	(522)
Income from Continuing Operations Before Income Taxes	65	1,329	8,479	7,850
Income tax provision	240	432	3,123	2,597
(Loss) Income from Continuing Operations	(175)	897	5,356	5,253
(Loss) Income from Discontinued Operations, Net of Tax	(10,064)	1,142	(10,867)	1,985
Net (Loss) Income	$ (10,239)	$ 2,039	$ (5,511)	$ 7,238
Basic:
Continuing Operations	$ (0.01)	$ 0.07	$ 0.43	$ 0.43
Discontinued Operations	$ (0.81)	$ 0.09	$ (0.88)	$ 0.16
Net (Loss) Income Per Share	$ (0.82)	$ 0.16	$ (0.45)	$ 0.59
Diluted:
Continuing Operations	$ (0.01)	$ 0.07	$ 0.40	$ 0.40
Discontinued Operations	$ (0.81)	$ 0.08	$ (0.82)	$ 0.16
Net (Loss) Income Per Share	$ (0.82)	$ 0.15	$ (0.42)	$ 0.56
Weighted Average Shares Outstanding:
Denominator for Basic Net Income Per Share	12,501	12,729	12,359	12,357
Effect of dilutive securities		597	907	621
Denominator for Diluted Net Income Per Share	12,501	13,326	13,266	12,978