Consolidated Statements of Operations - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Income Statement [Abstract]
Revenues	$ 51,300	$ 43,346
Cost of revenues	5,190	3,927
Gross profit	46,110	39,419
Operating expenses:
Selling and marketing	10,698	7,517
Research and development	19,071	11,682
General and administrative	12,801	9,921
Restructuring expenses	19	194
Total operating expenses	42,589	29,314
Operating income	3,521	10,105
Non-operating income (expense):
Gain on sale of software products	711	483
Interest income, net	96	228
Other expense, net	(3)	(14)
Income before provision for income taxes	4,325	10,802
Provision for income tax expense	160	80
Net income	$ 4,165	$ 10,722
Net earnings per share:
Basic	$ 0.10	$ 0.31
Diluted	$ 0.10	$ 0.29
Weighted average shares outstanding:
Basic	40,808	34,513
Diluted	42,764	36,991