CONSOLIDATED STATEMENTS OF OPERATIONS - (UNAUDITED) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Income Statement [Abstract]
Revenue from Contract with Customer, Excluding Assessed Tax	$ 37,973	$ 41,383
Cost of sales	7,427	8,249
Gross profit	30,546	33,134
Operating expenses:
Commissions and incentives	15,199	16,985
Selling and administrative expenses	7,576	7,980
Depreciation and amortization expense	528	511
Other operating costs	6,123	8,546
Total operating expenses	29,426	34,022
Income (loss) from operations	1,120	(888)
Interest income (expense), net	(95)	29
Other income (expense), net	4	288
Income (loss) before income taxes	1,029	(571)
Income tax (provision) benefit	(341)	307
Net income (loss)	$ 688	$ (264)
Earnings (loss) per common share:
Basic (in dollars per share)	$ 0.29	$ (0.10)
Diluted (in dollars per share)	$ 0.28	$ (0.10)
Weighted-average common shares outstanding:
Basic (in shares)	2,396	2,719
Diluted (in shares)	2,462	2,719