Consolidated Statements of Operations - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Income Statement [Abstract]
Revenues	$ 43,346	$ 26,285
Cost of revenues	3,927	4,333
Gross profit	39,419	21,952
Operating expenses:
Selling and marketing	7,517	5,784
Research and development	11,682	8,602
General and administrative	9,921	8,607
Restructuring expenses	194	173
Total operating expenses	29,314	23,166
Operating income (loss)	10,105	(1,214)
Non-operating income (expense):
Change in fair value of warrant liability		(812)
Loss on debt extinguishment		(203)
Gain on sale of software product	483
Interest income (expense), net	228	(472)
Other expense, net	(14)	(26)
Income (loss) before provision for income taxes	10,802	(2,727)
Provision for income tax expense	80	13
Net income (loss)	$ 10,722	$ (2,740)
Net earnings (loss) per share:
Basic	$ 0.31	$ (0.14)
Diluted	$ 0.29	$ (0.14)
Weighted average shares outstanding:
Basic	34,513	22,322
Diluted	36,991	22,322