CONSOLIDATED STATEMENTS OF OPERATIONS - (UNAUDITED) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Income Statement [Abstract]
Revenue from Contract with Customer, Excluding Assessed Tax	$ 37,966	$ 39,656	$ 112,218	$ 118,340
Cost of sales	9,328	7,711	25,044	23,253
Gross profit	28,638	31,945	87,174	95,087
Operating expenses:
Commissions and incentives	15,089	16,696	45,308	48,190
Selling and administrative expenses	6,639	8,951	20,659	24,908
Depreciation and amortization expense	468	519	1,525	1,564
Other operating costs	5,062	5,214	15,180	16,721
Total operating expenses	27,258	31,380	82,672	91,383
Income from operations	1,380	565	4,502	3,704
Interest income (expense), net	10	(12)	73	(83)
Other income (expense), net	248	(430)	206	554
Income before income taxes	1,638	123	4,781	4,175
Income tax (provision) benefit	(22)	(1,613)	753	(2,991)
Net income (loss)	$ 1,616	$ (1,490)	$ 5,534	$ 1,184
Earnings per common share:
Basic (in dollars per share)	$ 0.77	$ (0.62)	$ 2.42	$ 0.50
Diluted (in dollars per share)	$ 0.76	$ (0.62)	$ 2.38	$ 0.47
Weighted-average common shares outstanding:
Basic (in shares)	2,098	2,391	2,286	2,393
Diluted (in shares)	2,135	2,391	2,312	2,450