Consolidated Statements of Operations and Comprehensive Income - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Income Statement [Abstract]
Net sales	$ 70,199	$ 70,243	$ 209,258	$ 210,873
Cost of goods sold	27,626	26,901	81,700	80,840
Gross profit	42,573	43,342	127,558	130,033
Operating expenses:
Selling expenses	23,568	22,240	69,525	68,590
General and administrative expenses	16,616	18,292	54,446	56,337
Operating Expenses	40,184	40,532	123,971	124,927
Operating income	2,389	2,810	3,587	5,106
Interest expense	(167)	(131)	(486)	(409)
Other income (expenses), net	66	(1)	439	(210)
Income before income taxes	2,288	2,678	3,540	4,487
Income tax expense	$ 463	$ 248	$ 526	$ 502
Basic income per share of common stock:
Earnings Per Share, Basic	$ 0.21	$ 0.28	$ 0.34	$ 0.46
Diluted income per share of common stock:
Earnings Per Share, Diluted	$ 0.20	$ 0.27	$ 0.34	$ 0.45
Weighted Average Number of Shares Outstanding, Basic	8,785	8,746	8,778	8,725
Effect of dilutive securities outstanding	141	144	139	149
Weighted Average Number of Shares Outstanding, Diluted	8,926	8,890	8,917	8,874
Comprehensive income
Net Income	$ 1,825	$ 2,430	$ 3,014	$ 3,985
Adjustment for foreign currency translation	(33)	(740)	764	(1,162)
Net comprehensive income	$ 1,792	$ 1,690	$ 3,778	$ 2,823