Consolidated Statements of Operations (Unaudited) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Revenue
Total net revenue	$ 14,450	$ 12,935	$ 53,940	$ 35,202
Cost of revenue
Total cost of revenue	8,431	6,104	23,824	16,091
Expenses
Marketing	80	97	231	179
General and administrative	1,107	1,069	4,048	3,190
Research and development	3,129	2,356	8,916	7,109
Income from operations	1,703	3,309	16,921	8,633
Investment income (loss)	39	53	196	(215)
Other income	60	74	126	230
Income before income taxes	1,802	3,436	17,243	8,648
Income taxes	443	902	4,358	2,269
Net income	$ 1,359	$ 2,534	$ 12,885	$ 6,379
Basic (in dollars per share)	$ 0.16	$ 0.29	$ 1.50	$ 0.72
Diluted (in dollars per share)	$ 0.16	$ 0.29	$ 1.49	$ 0.72
Basic weighted average common shares outstanding (in shares)	8,538,954	8,714,579	8,596,654	8,803,760
Diluted weighted average common shares outstanding (in shares)	8,559,665	8,744,818	8,621,388	8,835,427
Service [Member]
Revenue
Total net revenue	$ 14,450	$ 11,152	$ 39,657	$ 31,119
Cost of revenue
Total cost of revenue	$ 8,431	6,104	23,824	16,091
Product [Member]
Revenue
Total net revenue		$ 1,783	$ 14,283	$ 4,083