Consolidated Statements of Operations (Unaudited) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011
Consolidated Statements of Operations [Abstract]
Net sales	$ 13,645	$ 14,564	$ 41,934	$ 44,274
Cost of sales	3,630	4,381	11,504	13,570
Gross profit	10,015	10,183	30,430	30,704
Sales and marketing	4,911	4,757	15,310	14,646
General and administrative	2,892	2,802	8,277	8,517
Research and development	1,261	974	3,531	3,286
Restructuring charges		394		2,049
(Gain) loss on divestitures	(50)	(735)	2	(735)
Impairment charges				83
Total operating expenses	9,014	8,192	27,120	27,846
Income from operations	1,001	1,991	3,310	2,858
Other income (expense):
Interest income	47	4	68	9
Interest expense				(2)
Foreign currency gain (loss)	7	(49)	(240)	95
Other income, net				8
Income before income taxes	1,055	1,946	3,138	2,968
Provision for income taxes	392	732	1,265	1,171
Net income	$ 663	$ 1,214	$ 1,873	$ 1,797
Net income per share of common stock:
Basic	$ 0.04	$ 0.08	$ 0.12	$ 0.12
Diluted	$ 0.04	$ 0.08	$ 0.12	$ 0.11
Weighted-average shares outstanding:
Basic	15,130	15,491	15,208	15,476
Diluted	15,605	16,030	15,654	16,045
Cash dividends declared per common share	$ 0.025	$ 0.020	$ 0.075	$ 0.060