CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Revenue	$ 13,242	$ 13,173
Cost of revenue	3,007	2,785
Gross profit	10,235	10,388
Operating expenses:
Selling, marketing and product support	2,127	2,546
General and administrative	3,621	3,898
Research and development	2,214	3,336
Total Operating expenses:	7,962	9,780
Income from operations	2,273	608
Other income	927	0
Interest income (expense)	0	(7)
Income from operations before income taxes	3,200	601
Income tax expense (benefit)	905	(462)
Net income	$ 2,295	$ 1,063
Net income per share:
Basic	$ 0.43	$ 0.2
Diluted	$ 0.43	$ 0.2
Weighted average number of common shares outstanding:
Basic	5,342	5,296
Diluted	5,358	5,316
Product sales
Revenue	$ 4,710	$ 4,829
Cost of revenue	2,607	2,418
Royalties
Revenue	8,532	8,344
Cost of revenue	$ 400	$ 367