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CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Thousands, $ in Thousands | 3 Months Ended
--- | ---
Mar. 31, 2018 | Mar. 31, 2017
Revenues: |  |  |
Product licenses |  | $ 17,301 | $ 22,646
Subscription services |  | 7,662 | 7,772
Total product licenses and subscription services |  | 24,963 | 30,418
Product support |  | 74,415 | 70,512
Other services |  | 23,589 | 21,302
Total revenues |  | 122,967 | 122,232
Cost of revenues: |  |  |
Product licenses |  | 2,211 | 1,672
Subscription services |  | 3,249 | 3,039
Total product licenses and subscription services |  | 5,460 | 4,711
Product support |  | 4,796 | 4,334
Other services |  | 14,929 | 14,087
Total cost of revenues |  | 25,185 | 23,132
Gross profit |  | 97,782 | 99,100
Operating expenses: |  |  |
Sales and marketing |  | 51,335 | 39,582
Research and development |  | 23,560 | 18,426
General and administrative |  | 22,172 | 20,257
Total operating expenses |  | 97,067 | 78,265
Income from operations |  | 715 | 20,835
Interest income, net |  | 2,034 | 837
Other expense, net |  | (1,594) | (1,856)
Income before income taxes |  | 1,155 | 19,816
(Benefit from) provision for income taxes |  | (518) | 4,259
Net income |  | $ 1,673 | $ 15,557
Basic earnings per share | [1] | $ 0.15 | $ 1.36
Weighted average shares outstanding used in computing basic earnings per share |  | 11,447 | 11,439
Diluted earnings per share | [1] | $ 0.15 | $ 1.34
Weighted average shares outstanding used in computing diluted earnings per share |  | 11,488 | 11,593
[1] | Basic and fully diluted earnings per share for class A and class B common stock are the same.

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