CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Revenue:
Total revenue	$ 12,204	$ 16,131
Costs and expenses:
Research and development	7,928	7,105
Selling and marketing	3,610	4,178
General and administrative	3,583	3,296
Total costs and expenses	16,382	15,819
Patent related income	49	69
Operating income (loss)	(4,129)	381
Interest income	1,000	844
Income (loss) before provision (benefit) for income taxes	(3,129)	1,225
Provision (benefit) for income taxes	5,211	(8)
Net income (loss)	$ (8,340)	$ 1,233
Net income (loss) per share - basic (in dollars per share)	$ (0.39)	$ 0.06
Net income (loss) per share - diluted (in dollars per share)	$ (0.39)	$ 0.06
Weighted-average shares - basic (in shares)	21,523	21,544
Weighted-average shares - diluted (in shares)	21,523	21,605
Software licenses
Revenue:
Total revenue	$ 4,599	$ 8,038
Costs and expenses:
Cost of revenue		20
Software maintenance
Revenue:
Total revenue	5,262	5,397
Services
Revenue:
Total revenue	2,343	2,696
Costs and expenses:
Cost of revenue	$ 1,261	$ 1,220