Condensed Statements of Income - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Condensed Statements of Income
Revenues	$ 10,727	$ 8,902	$ 26,530	$ 23,616
Operating expenses:
Cost of revenues	820	974	2,370	2,755
Engineering and product development	672	617	2,277	1,777
Sales and marketing	2,116	2,345	7,283	6,626
General and administrative	1,564	1,855	4,634	4,798
Total operating expenses	5,172	5,791	16,564	15,956
Income from operations	5,555	3,111	9,966	7,660
Interest income (expense)	(2)	2	(5)
Other income (expense)	38	(1)	64	(3)
Other expense	40	(3)	69	(3)
Pre-tax net income	5,595	3,108	10,035	7,657
Income tax provision (benefit)	729	(4,671)	1,421	(4,594)
Net income	$ 4,866	$ 7,779	$ 8,614	$ 12,251
Net income per share, basic	$ 0.74	$ 1.20	$ 1.31	$ 1.91
Weighted average number of shares used in computing basic income per share	6,578,808	6,492,501	6,553,522	6,410,588
Net income per share, diluted	$ 0.61	$ 0.96	$ 1.07	$ 1.51
Weighted average number of shares used in computing diluted income per share	8,038,513	8,108,053	8,046,759	8,121,996