Consolidated Statements Of Operations (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2012	Mar. 31, 2011
Consolidated Statements Of Operations [Abstract]
Net sales	$ 13,928	$ 14,598
Cost of sales	4,058	4,447
Gross profit	9,870	10,151
Sales and marketing	5,213	4,973
General and administrative	2,668	2,848
Research and development	1,135	1,272
Restructuring charges		1,005
Impairment charges		83
Total operating expenses	9,016	10,181
Income (loss) from operations	854	(30)
Other income (expense):
Interest income	7	1
Foreign currency gain (loss)	(198)	139
Other income, net		8
Income before income taxes	663	118
Provision for income taxes	277	54
Net income	$ 386	$ 64
Net income per share of common stock:
Basic	$ 0.03
Diluted	$ 0.02
Weighted-average shares outstanding:
Basic	15,294	15,465
Diluted	15,726	16,038
Cash dividends declared per common share	$ 0.025	$ 0.020