CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014
CONSOLIDATED STATEMENTS OF OPERATIONS [Abstract]
Net sales	$ 180,267	$ 190,081
Cost of sales	34,102	38,350
Gross profit	146,165	151,731
Operating expenses:
Commissions and incentives	72,956	75,240
Selling and administrative expenses	34,458	36,193
Depreciation and amortization	1,793	1,608
Other operating costs	24,814	25,948
Total operating expenses	134,021	138,989
Income from operations	12,144	12,742
Interest income	210	121
Other expense, net	(4,155)	(3,042)
Income before income taxes	8,199	9,821
Income tax provision	(2,360)	(3,325)
Net income	$ 5,839	$ 6,496
Earnings per common share:
Basic (in dollars per share)	$ 2.18	$ 2.44
Diluted (in dollars per share)	$ 2.14	$ 2.40
Weighted-average common shares outstanding:
Basic (in shares)	2,680	2,663
Diluted (in shares)	2,728	2,706