Condensed Statements of Income and Comprehensive Income (Parenthetical) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Operating expenses include stock-based compensation as follows:
Total stock-based compensation	$ 1,280	$ 1,152	$ 3,700	$ 3,287
Research and Development
Operating expenses include stock-based compensation as follows:
Total stock-based compensation	505	462	1,454	1,257
General and Administrative
Operating expenses include stock-based compensation as follows:
Total stock-based compensation	639	598	1,874	1,616
Sales and Marketing
Operating expenses include stock-based compensation as follows:
Total stock-based compensation	$ 136	$ 92	$ 372	$ 414