CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Revenue:
Total revenue	$ 3,518,000	$ 3,732,000
Costs and expenses:
Research and development	2,272,000	1,760,000
Selling and marketing	1,285,000	826,000
General and administrative	1,138,000	721,000
Total costs and expenses	4,865,000	3,825,000
Patent related income	0	49,000
Operating loss	(1,347,000)	(44,000)
Interest income	148,000	275,000
Income (loss) before provision for (benefit from) income taxes	(1,199,000)	231,000
Provision for (benefit from) income taxes	(139,000)	3,000
Net income (loss)	$ (1,060,000)	$ 228,000
Net income (loss) per share - basic (in dollars per share)	$ (0.05)	$ 0.01
Net income (loss) per share - diluted (in dollars per share)	$ (0.05)	$ 0.01
Weighted-average shares - basic (in shares)	21,522	21,565
Weighted-average shares - diluted (in shares)	21,522	21,582
Software licenses
Revenue:
Total revenue	$ 1,969,000	$ 1,537,000
Software maintenance
Revenue:
Total revenue	1,362,000	1,355,000
Services
Revenue:
Total revenue	187,000	840,000
Costs and expenses:
Cost of revenue	$ 170,000	$ 518,000