CONSOLIDATED STATEMENTS OF OPERATIONS and COMPREHNSIVE LOSS - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Revenue:
Total revenue	$ 4,305	$ 4,692
Costs and expenses:
Cost of services and other revenue	298	314
Research and development	2,381	2,424
Selling and marketing	1,991	1,781
General and administrative	1,504	1,461
Total costs and expenses	6,174	5,980
Operating loss	(1,869)	(1,288)
Interest income	301	9
Net loss	$ (1,568)	$ (1,279)
Net loss per share - basic	$ (0.07)	$ (0.06)
Net loss per share - diluted	$ (0.07)	$ (0.06)
Weighted-average shares – basic	21,033	21,642
Weighted-average shares – diluted	21,033	21,642
Other comprehensive income, net of tax:
Unrealized gain on available-for-sale securities	$ 147
Comprehensive income (loss)	(1,421)	$ (1,279)
Software licenses
Revenue:
Total revenue	2,105	2,628
Software maintenance
Revenue:
Total revenue	1,835	1,661
Services and other
Revenue:
Total revenue	$ 365	$ 403