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Revenue - Financial Statement Effect of Applying ASC 606 (Income Statement) (Detail) - USD ($) $ in Thousands | 3 Months Ended
--- | ---
Mar. 31, 2018 | Mar. 31, 2017
Revenues |  |
Software as a service and platform as a service | $ 104,280 | $ 99,447
License | 28,046 | 59,381
Maintenance | 56,659 | 54,471
Services | 20,325 | 18,163
Operating expenses |  |
Selling and marketing | 31,893 | 27,137
Other income (expense) |  |
Interest income | 2,744 | 106
Other, net | (55) | 649
Income tax provision |  |
Income tax benefit | (3,952) | $ (4,174)
Calculated under Revenue Guidance in Effect before Topic 606 [Member] |  |
Revenues |  |
Software as a service and platform as a service | 105,174 |
License | 43,921 |
Maintenance | 55,771 |
Services | 20,029 |
Operating expenses |  |
Selling and marketing | 30,346 |
Other income (expense) |  |
Interest income | 179 |
Other, net | (784) |
Income tax provision |  |
Income tax benefit | (2,043) |
Difference between Revenue Guidance in Effect before and after Topic 606 [Member] | Accounting Standards Update 2014-09 [Member] |  |
Revenues |  |
Software as a service and platform as a service | (894) |
License | (15,875) |
Maintenance | 888 |
Services | 296 |
Operating expenses |  |
Selling and marketing | 1,547 |
Other income (expense) |  |
Interest income | 2,565 |
Other, net | 729 |
Income tax provision |  |
Income tax benefit | $ (1,909) |

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