CONSOLIDATED STATEMENTS OF OPERATIONS (UNAUDITED) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Income Statement [Abstract]
Net sales	$ 14,948	$ 19,328
Cost of sales	4,514	5,224
Gross profit	10,434	14,104
Operating expenses:
Commissions expense	6,603	9,498
Selling, general and administrative expenses	5,279	7,315
Total operating expenses	11,882	16,813
Loss from operations	(1,448)	(2,709)
Other income, net	93	432
Loss before income taxes	(1,355)	(2,277)
Income tax benefit	(782)	(354)
Net loss	$ (573)	$ (1,923)
Net loss per common share - basic and diluted (in shares)	$ (0.05)	$ (0.17)
Weighted average common shares outstanding - basic and diluted (in dollars per share)	10,483	11,333