CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Income Statement [Abstract]
Revenue from Contract with Customer, Excluding Assessed Tax	$ 151,407	$ 157,728
Cost of sales	35,505	31,550
Gross profit	115,902	126,178
Operating expenses:
Commissions and incentives	61,349	64,254
Selling and administrative expenses	27,845	30,824
Depreciation and amortization	1,990	2,088
Other operating costs	20,227	22,579
Total operating expenses	111,411	119,745
Income from operations	4,491	6,433
Interest income (expense)	83	(16)
Other income (expense), net	1,151	(681)
Income before income taxes	5,725	5,736
Income tax benefit (provision)	536	(2,447)
Net income	$ 6,261	$ 3,289
Income per common share:
Basic (in dollars per share)	$ 2.80	$ 1.38
Diluted (in dollars per share)	$ 2.77	$ 1.35
Weighted-average common shares outstanding:
Basic (in shares)	2,235	2,391
Diluted (in shares)	2,264	2,441