Statements of Income and Comprehensive Income - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Total revenue	$ 59,985	$ 55,146
Total cost of sales	26,040	22,074
Gross profit	33,945	33,072
Operating expenses:
Research and development	11,108	12,628
General and administrative	11,741	10,949
Sales and marketing	4,869	4,460
Total operating expenses	27,718	28,037
Income from operations	6,227	5,035
Interest expense	(274)	(547)
Other income (expense), net	190	(141)
Net income before income taxes	6,143	4,347
Income tax expense	(14)	(4)
Net income and comprehensive income	$ 6,129	$ 4,343
Net income per common share, Basic	$ 0.30	$ 0.22
Net income per common share, Diluted	$ 0.29	$ 0.22
Weighted average shares of common stock outstanding, basic	20,130,336	19,400,124
Weighted average shares of common stock outstanding, diluted	20,775,925	19,972,145
Product sales
Total revenue	$ 55,032	$ 43,931
Total cost of sales	25,112	21,045
Licensing, royalty, patent and other revenue
Total revenue	4,953	11,215
Total cost of sales	$ 928	$ 1,029