CONSOLIDATED STATEMENTS OF OPERATIONS and COMPREHENSIVE LOSS - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Revenue:
Total revenue	$ 16,008	$ 16,854
Costs and expenses:
Cost of services and other	1,260	1,210
Research and development	9,234	9,259
Selling and marketing	6,962	6,324
General and administrative	6,441	6,158
Gain on sale of fixed assets	(5,672)
Total costs and expenses	18,225	22,951
Operating loss	(2,217)	(6,097)
Interest and other income	540	4
Loss before provision for (benefit from) income taxes	(1,677)	(6,093)
Provision for (benefit from) income taxes	49	(269)
Net loss	$ (1,726)	$ (5,824)
Net loss per share – basic	$ (0.08)	$ (0.27)
Net loss per share – diluted	$ (0.08)	$ (0.27)
Weighted-average shares - basic	21,604	21,525
Weighted-average shares - diluted	21,604	21,525
Other comprehensive loss, net of tax
Unrealized loss on available-for-sale securities	$ (110)
Comprehensive loss	(1,836)	$ (5,824)
Software licenses
Revenue:
Total revenue	7,386	7,973
Software maintenance
Revenue:
Total revenue	7,111	6,679
Services and other
Revenue:
Total revenue	$ 1,511	$ 2,202