CONSOLIDATED STATEMENTS OF OPERATIONS - (UNAUDITED) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Income Statement [Abstract]
Revenue from Contract with Customer, Excluding Assessed Tax	$ 37,647	$ 40,711	$ 74,252	$ 78,684
Cost of sales	8,708	8,115	15,716	15,542
Gross profit	28,939	32,596	58,536	63,142
Operating expenses:
Commissions and incentives	15,330	16,295	30,219	31,494
Selling and administrative expenses	7,165	8,381	14,020	15,957
Depreciation and amortization expense	537	517	1,057	1,045
Other operating costs	4,797	5,384	10,118	11,507
Total operating expenses	27,829	30,577	55,414	60,003
Income from operations	1,110	2,019	3,122	3,139
Interest income (expense), net	13	25	63	(70)
Other (expense) income, net	166	980	(42)	984
Income before income taxes	1,289	3,024	3,143	4,053
Income tax (provision) benefit	(159)	(1,037)	775	(1,378)
Net income	$ 1,130	$ 1,987	$ 3,918	$ 2,675
Earnings per common share:
Basic (in dollars per share)	$ 0.48	$ 0.83	$ 1.65	$ 1.12
Diluted (in dollars per share)	$ 0.47	$ 0.81	$ 1.62	$ 1.09
Weighted-average common shares outstanding:
Basic (in shares)	2,370	2,394	2,380	2,395
Diluted (in shares)	2,388	2,452	2,402	2,457