Consolidated Statements of Operations - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Income Statement [Abstract]
Revenues	$ 12,933	$ 10,854	$ 26,255	$ 19,286
Cost of revenues	1,269	974	2,441	1,891
Gross profit	11,664	9,880	23,814	17,395
Operating expenses:
Selling and marketing	2,613	1,768	5,400	3,735
Research and development	4,604	2,743	8,333	5,425
General and administrative	3,070	2,426	6,738	5,126
Restructuring expense		11	6	115
Total operating expenses	10,287	6,948	20,477	14,401
Operating income	1,377	2,932	3,337	2,994
Other income (expense):
Interest income, net	2	31	87	30
Gain on sale of software product		483		483
Other expense		(6)		(15)
Income before provision for income taxes	1,379	3,440	3,424	3,492
Provision for income tax expense		4		8
Net income	$ 1,379	$ 3,436	$ 3,424	$ 3,484
Earnings per share:
Basic	$ 0.03	$ 0.11	$ 0.08	$ 0.11
Diluted	$ 0.03	$ 0.10	$ 0.08	$ 0.10
Weighted average shares outstanding:
Basic	41,127	32,068	40,305	31,685
Diluted	43,079	35,308	42,346	33,365
Preferred dividends per share		$ 25.01		$ 50.01