CONSOLIDATED STATEMENTS OF OPERATIONS - (UNAUDITED) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
CONSOLIDATED STATEMENTS OF OPERATIONS - (UNAUDITED) [Abstract]
Net sales	$ 48,810	$ 46,726	$ 89,518	$ 91,096
Cost of sales	10,100	8,270	18,489	16,823
Gross profit	38,710	38,456	71,029	74,273
Operating expenses:
Commissions and incentives	20,417	18,887	36,034	36,429
Selling and administrative expenses	9,730	8,598	18,322	17,411
Depreciation and amortization	477	495	920	891
Other operating costs	8,198	5,866	15,329	12,421
Total operating expenses	38,822	33,846	70,605	67,152
Income (loss) from operations	(112)	4,610	424	7,121
Interest income	23	31	11	61
Other expense, net	(1,037)	(452)	(703)	(1,384)
Income (loss) before income taxes	(1,126)	4,189	(268)	5,798
Provision for income taxes	(206)	(1,046)	(472)	(1,556)
Net income (loss)	$ (1,332)	$ 3,143	$ (740)	$ 4,242
Earnings (loss) per common share:
Basic (in dollars per share)	$ (0.49)	$ 1.17	$ (0.27)	$ 1.58
Diluted (in dollars per share)	$ (0.49)	$ 1.15	$ (0.27)	$ 1.55
Weighted-average common shares outstanding:
Basic (in shares)	2,707	2,680	2,701	2,678
Diluted (in shares)	2,707	2,729	2,701	2,730