CONSOLIDATED STATEMENTS OF OPERATIONS - (UNAUDITED) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
CONSOLIDATED STATEMENTS OF OPERATIONS - (UNAUDITED) [Abstract]
Net sales	$ 48,146	$ 43,860	$ 137,664	$ 134,956
Cost of sales	9,736	8,253	28,225	25,076
Gross profit	38,410	35,607	109,439	109,880
Operating expenses:
Commissions and incentives	19,985	17,867	56,019	54,296
Selling and administrative expenses	9,877	9,001	28,199	26,412
Depreciation and amortization expense	507	433	1,427	1,324
Other operating costs	7,534	6,072	22,863	18,493
Total operating expenses	37,903	33,373	108,508	100,525
Income from operations	507	2,234	931	9,355
Interest income (expense)	(16)	93	(5)	154
Other income (expense), net	232	(2,418)	(471)	(3,802)
Income (loss) before income taxes	723	(91)	455	5,707
Benefit (provision) for income taxes	562	159	90	(1,397)
Net income	$ 1,285	$ 68	$ 545	$ 4,310
Earnings per common share:
Basic (in dollars per share)	$ 0.47	$ 0.03	$ 0.20	$ 1.61
Diluted (in dollars per share)	$ 0.46	$ 0.03	$ 0.19	$ 1.58
Weighted-average common shares outstanding:
Basic (in shares)	2,706	2,681	2,703	2,679
Diluted (in shares)	2,818	2,721	2,812	2,727