CONSOLIDATED STATEMENTS OF OPERATIONS - (UNAUDITED) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
CONSOLIDATED STATEMENTS OF OPERATIONS - (UNAUDITED) [Abstract]
Net sales	$ 44,370	$ 42,963
Cost of sales	8,553	9,398
Gross profit	35,817	33,565
Operating expenses:
Commissions and incentives	17,542	16,968
Selling and administrative expenses	8,813	7,876
Depreciation and amortization	396	386
Other operating costs	6,555	6,956
Total operating expenses	33,306	32,186
Income from operations	2,511	1,379
Interest income	30	1
Other expense, net	(932)	(336)
Income before income taxes	1,609	1,044
Provision for income taxes	510	816
Net income	$ 1,099	$ 228
Earnings per common share:
Basic (in dollars per share)	$ 0.41	$ 0.09
Diluted (in dollars per share)	$ 0.40	$ 0.08
Weighted-average common shares outstanding:
Basic (in shares)	2,677	2,654
Diluted (in shares)	2,730	2,702