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INTERIM CONDENSED CONSOLIDATED STATEMENTS OF INCOME - USD ($) shares in Thousands, $ in Thousands | 3 Months Ended
--- | ---
Mar. 31, 2018 | Mar. 31, 2017
Revenues: |  |
Licensing and related revenue | $ 10,083 | $ 9,535
Royalties | 7,486 | 11,752
Total revenues | 17,569 | 21,287
Cost of revenues | 1,972 | 1,696
Gross profit | 15,597 | 19,591
Operating expenses: |  |
Research and development, net | 12,016 | 9,873
Sales and marketing | 3,176 | 2,938
General and administrative | 2,954 | 2,125
Amortization of intangible assets | 359 | 309
Total operating expenses | 18,505 | 15,245
Operating income (loss) | (2,908) | 4,346
Financial income, net | 927 | 571
Income (loss) before taxes on income | (1,981) | 4,917
Income taxes | 201 | 810
Net income | $ (2,182) | $ 4,107
Basic net income (loss) per share | $ (0.10) | $ 0.19
Diluted net income (loss) per share | $ (0.10) | $ 0.19
Weighted-average shares used to compute net income (loss) per share (in thousands): |  |
Basic | 22,148 | 21,398
Diluted | 22,148 | 22,187

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