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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.