Condensed Statements of Income and Comprehensive Income (Parenthetical) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Operating expenses include stock-based compensation as follows:
Total stock-based compensation	$ 1,152	$ 1,027	$ 3,287	$ 2,474
Research and Development
Operating expenses include stock-based compensation as follows:
Total stock-based compensation	462	428	1,257	874
General and Administrative
Operating expenses include stock-based compensation as follows:
Total stock-based compensation	598	434	1,616	1,224
Sales and Marketing
Operating expenses include stock-based compensation as follows:
Total stock-based compensation	$ 92	$ 165	$ 414	$ 376