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INTERIM CONDENSED CONSOLIDATED STATEMENTS OF INCOME - USD ($)
shares in Thousands, $ in Thousands
 3 Months Ended 6 Months Ended
Jun. 30, 2017
Jun. 30, 2016
Jun. 30, 2017
Jun. 30, 2016
Revenues:        
Licensing and related revenue $ 10,337 $ 7,470 $ 19,872 $ 16,120
Royalties 10,238 9,633 21,990 17,491
Total revenues 20,575 17,103 41,862 33,611
Cost of revenues 1,608 1,403 3,304 3,031
Gross profit 18,967 15,700 38,558 30,580
Operating expenses:        
Research and development, net 10,509 7,811 20,382 15,725
Sales and marketing 3,427 2,855 6,365 5,700
General and administrative 2,552 2,078 4,677 4,068
Amortization of intangible assets 309 309 618 618
Total operating expenses 16,797 13,053 32,042 26,111
Operating income 2,170 2,647 6,516 4,469
Financial income, net 755 561 1,326 1,002
Income before taxes on income 2,925 3,208 7,842 5,471
Income taxes expense (benefit) (983) 497 (173) 960
Net income $ 3,908 $ 2,711 $ 8,015 $ 4,511
Basic net income per share $ 0.18 $ 0.13 $ 0.37 $ 0.22
Diluted net income per share $ 0.17 $ 0.13 $ 0.36 $ 0.21
Weighted-average shares used to compute net income per share        
Basic 21,712 20,604 21,556 20,562
Diluted 22,563 21,371 22,376 21,149