Unaudited Condensed Consolidated Statements of Operations - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Revenue	$ 1,795	$ 3,191
Cost of revenue	747	1,284
Gross profit	1,048	1,907
Operating expenses:
Sales and marketing	510	412
Research and development	753	182
General and administrative	256	331
Operating income (loss)	(471)	982
Interest expense	(1)	(35)
Interest income	7
Net Income (loss)	(465)	947
Preferred stock dividend accrued	(33)	(34)
Net income (loss) attributable to common stockholders	$ (498)	$ 913
Net income (loss) per share attributable to common stockholders:
Basic (in dollars per share)	$ (0.04)	$ 0.07
Diluted (in dollars per share)	$ (0.04)	$ 0.06
Weighted average common shares outstanding:
Basic (in shares)	13,703	13,408
Diluted (in shares)	13,703	15,323