Condensed Statements of Income and Comprehensive Income (Parenthetical) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Operating expenses include stock-based compensation as follows:
Total stock-based compensation	$ 1,260	$ 1,311	$ 2,420	$ 2,135
Research and Development
Operating expenses include stock-based compensation as follows:
Total stock-based compensation	503	462	949	795
General and Administrative
Operating expenses include stock-based compensation as follows:
Total stock-based compensation	624	647	1,235	1,018
Sales and Marketing
Operating expenses include stock-based compensation as follows:
Total stock-based compensation	$ 133	$ 202	$ 236	$ 322