Consolidated Statements Of Operations (USD $) In Thousands, except Per Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2011	Jan. 01, 2011	Jan. 02, 2010
Consolidated Statements Of Operations [Abstract]
Total revenues	$ 33,159	$ 32,308	$ 31,032
Cost of revenues	16,869	16,106	15,593
Gross profit	16,290	16,202	15,439
Operating expenses:
Research and development	3,913	3,753	3,315
Sales and marketing	7,458	7,095	6,556
General and administrative	4,259	4,163	4,339
Legal settlement, net of expenses	(1,274)	0	0
Total operating expenses	14,356	15,011	14,210
Income from continuing operations	1,934	1,191	1,229
Other income (expenses):
Legal settlement	800	800	800
Interest and other expense, net	(296)	(30)	(225)
Total other income, net	504	770	575
Income from continuing operations before income taxes	2,438	1,961	1,804
Provision for income taxes	297	308	262
Income from continuing operations, net of tax	2,141	1,653	1,542
Income from discontinued operations, net of tax	469	1,393	1,043
Net income	$ 2,610	$ 3,046	$ 2,585
Net income per share:
Basic - Continuing operations	$ 0.24	$ 0.18	$ 0.17
Basic - Discontinued operations	$ 0.05	$ 0.16	$ 0.12
Net income	$ 0.29	$ 0.34	$ 0.29
Diluted - Continuing operations	$ 0.21	$ 0.16	$ 0.16
Diluted - Discontinued operations	$ 0.05	$ 0.14	$ 0.10
Net income	$ 0.26	$ 0.30	$ 0.26
Weighted average shares used in computing net income per common share - basic	8,958	8,943	8,840
Weighted average shares used in computing net income per common share - diluted	10,225	10,134	9,940