CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Revenue:
Total revenue	$ 4,419,000	$ 3,518,000
Costs and expenses:
Cost of sales	383,000	170,000
Research and development	2,396,000	2,272,000
Selling and marketing	1,652,000	1,285,000
General and administrative	1,437,000	1,138,000
Total costs and expenses	5,868,000	4,865,000
Operating loss	(1,449,000)	(1,347,000)
Interest income	1,000	148,000
Loss before benefit from income taxes	(1,448,000)	(1,199,000)
Benefit from income taxes	0	(139,000)
Net loss	$ (1,448,000)	$ (1,060,000)
Net loss per share – basic	$ (0.07)	$ (0.05)
Net loss per share – diluted	$ (0.07)	$ (0.05)
Weighted-average shares – basic	21,494	21,522
Weighted-average shares – diluted	21,494	21,522
Software licenses
Revenue:
Total revenue	$ 2,367,000	$ 1,969,000
Software maintenance
Revenue:
Total revenue	1,536,000	1,362,000
Services and other
Revenue:
Total revenue	$ 516,000	$ 187,000