Consolidated Statements of Income (Loss) - USD ($) shares in Thousands, $ in Thousands		12 Months Ended
		Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Revenues:
Revenues		$ 100,326	$ 87,152	$ 77,877
Cost of revenues		10,749	10,106	7,951
Gross profit		89,577	77,046	69,926
Operating expenses:
Research and development, net *)	[1]	62,010	52,843	47,755
Sales and marketing *)	[1]	11,907	12,363	12,161
General and administrative *)	[1]	14,116	11,841	10,354
Amortization of intangible assets		2,307	1,923	901
Total operating expenses		90,340	78,970	71,171
Operating loss		(763)	(1,924)	(1,245)
Financial income, net		3,284	3,291	3,418
Revaluation of investment in non-marketable equity securities		0	0	(870)
Income before taxes on income		2,521	1,367	1,303
Taxes on income		4,900	1,339	729
Net income (loss)		$ (2,379)	$ 28	$ 574
Basic net income (loss) per share (in dollars per share)		$ (0.11)	$ 0.00	$ 0.03
Diluted net income (loss) per share (in dollars per share)		$ (0.11)	$ 0.00	$ 0.03
Weighted average shares used to compute net income (loss) per share (in thousands):
Basic (in shares)		22,107	21,932	22,034
Diluted (in shares)		22,107	22,323	22,503
License [Member]
Revenues:
Revenues		$ 52,513	$ 47,890	$ 40,446
Royalty [Member]
Revenues:
Revenues		$ 47,813	$ 39,262	$ 37,431

[1] Not including amortization of technology shown separately.