Consolidated Statements of Operations (Unaudited) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Revenue
Total net revenue	$ 13,355	$ 8,053	$ 22,267	$ 15,946
Cost of revenue
Total cost of revenue	5,558	3,694	9,986	7,201
Expenses
Marketing	46	31	83	63
General and administrative	1,241	704	2,121	1,762
Research and development	2,652	921	4,754	1,838
Income from operations	3,858	2,703	5,323	5,082
Investment loss	(134)	(95)	(267)	(1,145)
Other income	81	117	156	253
Income before income taxes	3,805	2,725	5,212	4,190
Income taxes	1,000	525	1,367	943
Net income	$ 2,805	$ 2,200	$ 3,845	$ 3,247
Basic (in dollars per share)	$ 0.32	$ 0.25	$ 0.43	$ 0.36
Diluted (in dollars per share)	$ 0.32	$ 0.24	$ 0.43	$ 0.36
Basic weighted average common shares outstanding (in shares)	8,797,691	8,924,988	8,848,351	8,924,988
Diluted weighted average common shares outstanding (in shares)	8,828,773	9,019,025	8,880,831	9,020,470
Service [Member]
Revenue
Total net revenue	$ 11,055	$ 8,053	$ 19,967	$ 15,946
Cost of revenue
Total cost of revenue	5,558	3,694	9,986	7,201
Product [Member]
Revenue
Total net revenue	2,300	0	2,300	0
Cost of revenue
Total cost of revenue	$ 0	$ 0	$ 0	$ 0