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Consolidated Statements of Income (Loss) - USD ($)
shares in Thousands, $ in Thousands
 12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Revenues:      
Revenues $ 122,706 $ 100,326 $ 87,152
Cost of revenues 16,827 10,749 10,106
Gross profit 105,879 89,577 77,046
Operating expenses:      
Research and development, net 72,504 62,010 52,843
Sales and marketing 12,861 11,907 12,363
General and administrative 14,296 14,116 11,841
Amortization of intangible assets 2,710 2,307 1,923
Total operating expenses 102,371 90,340 78,970
Operating income (loss) 3,508 (763) (1,924)
Financial income, net 197 3,284 3,291
Remeasurement of marketable equity securities 1,983 0 0
Income before taxes on income 5,688 2,521 1,367
Taxes on income 5,292 4,900 1,339
Net income (loss) $ 396 $ (2,379) $ 28
Basic net income (loss) per share (in dollars per share) $ 0.02 $ (0.11) $ 0.00
Diluted net income (loss) per share (in dollars per share) $ 0.02 $ (0.11) $ 0.00
Weighted average shares used to compute net income (loss) per share (in thousands):      
Basic (in shares) 22,819 22,107 21,932
Diluted (in shares) 23,251 22,107 22,323
License [Member]      
Revenues:      
Revenues $ 72,827 $ 52,513 $ 47,890
Royalty [Member]      
Revenues:      
Revenues $ 49,879 $ 47,813 $ 39,262