Condensed Consolidated Statements of Operations (Unaudited) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended
	Mar. 30, 2013	Mar. 31, 2012
Condensed Consolidated Statements of Operations [Abstract]
Total revenues	$ 8,939	$ 8,305
Cost of revenues	4,708	4,319
Gross profit	4,231	3,986
Operating expenses:
Research and development	996	1,182
Sales and marketing	1,625	1,864
General and administrative	1,186	1,176
Proceeds from demutualization of insurance carrier	(473)	0
Total operating expenses	3,334	4,222
Income (loss) from continuing operations	897	(236)
Other expense, net	(18)	(27)
Income (loss) from continuing operations before provision for income taxes	879	(263)
Provision for income taxes	5	2
Income (loss) from continuing operations, net of tax	874	(265)
Loss from discontinued operations, net of tax	0	(162)
Gain on sale of discontinued operations, net of tax	0	2,032
Income from discontinued operations, net of tax	0	1,870
Net income	$ 874	$ 1,605
Basic -
Continuing operations	$ 0.10	$ (0.03)
Discontinued operations	$ 0.00	$ 0.21
Net income	$ 0.10	$ 0.18
Diluted -
Continuing operations	$ 0.09	$ (0.03)
Discontinued operations	$ 0.00	$ 0.21
Net income	$ 0.09	$ 0.18
Weighted average shares used in computing net income (loss) per common share - basic	8,511	8,933
Weighted average shares used in computing net income (loss) per common share - diluted	9,802	8,933