CONSOLIDATED STATEMENTS OF OPERATIONS (USD $) In Thousands, except Per Share data, unless otherwise specified	12 Months Ended
	Dec. 30, 2011	Dec. 31, 2010	Jan. 01, 2010
Net sales	$ 62,765	$ 54,958	$ 51,060
Cost of sales	20,396	19,882	19,737
Gross profit	42,369	35,076	31,323
Selling, general and administrative expenses:
General and administrative	14,932	14,778	15,009
Marketing and selling	17,726	17,176	15,300
Research and development	5,868	5,724	5,893
Other general and administrative expenses	1,060
Operating income (loss)	2,783	(2,602)	(4,879)
Other income (expense):
Interest income	32	43	67
Interest expense	(523)	(896)	(1,317)
Gain (loss) on foreign currency transactions	86	(87)	124
Loss on early extinguishment of note payable		(267)
Other income, net	326	128	257
Other expense, net	(79)	(1,079)	(869)
Income (loss) before provision for income taxes	2,704	(3,681)	(5,748)
Provision for income taxes	1,356	432	1,154
Income (loss) from continuing operations	1,348	(4,113)	(6,902)
Income from discontinued operations, net of income taxes		4,166	702
Net income (loss)	$ 1,348	$ 53	$ (6,200)
Income (loss) per share from continuing operations - basic	$ 0.04	$ (0.12)	$ (0.21)
Income (loss) per share from continuing operations - diluted	$ 0.04	$ (0.12)	$ (0.21)
Income per share from discontinued operations - basic and diluted		$ 0.12	$ 0.02
Net income (loss) per share - basic	$ 0.04	$ 0.00	$ (0.19)
Net income (loss) per share - diluted	$ 0.04	$ 0.00	$ (0.19)
Weighted average shares outstanding - basic	35,434	34,825	32,498
Weighted average shares outstanding - diluted	36,878	34,825	32,498