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CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Thousands, $ in Thousands | 3 Months Ended
--- | ---
Mar. 31, 2016 | Mar. 31, 2015
Revenues |  |  |
License |  | $ 37,423 | $ 39,577
Maintenance |  | 57,331 | 59,492
Services |  | 19,576 | 23,497
Hosting |  | 111,736 | 110,251
Total revenues |  | 226,066 | 232,817
Operating expenses |  |  |
Cost of license | [1] | 5,439 | 6,109
Cost of maintenance, services and hosting | [1] | 113,044 | 113,013
Research and development |  | 43,518 | 37,091
Selling and marketing |  | 30,000 | 28,911
General and administrative |  | 25,878 | 21,575
Gain on sale of CFS assets |  | (151,952) |
Depreciation and amortization |  | 23,208 | 19,693
Total operating expenses |  | 89,135 | 226,392
Operating income |  | 136,931 | 6,425
Other income (expense) |  |  |
Interest expense |  | (10,414) | (10,941)
Interest income |  | 150 | 102
Other |  | (334) | 3,722
Total other income (expense) |  | (10,598) | (7,117)
Income (loss) before income taxes |  | 126,333 | (692)
Income tax expense (benefit) |  | 36,849 | (530)
Net income (loss) |  | $ 89,484 | $ (162)
Earnings (loss) per common share |  |  |
Basic |  | $ 0.75 | $ 0.00
Diluted |  | $ 0.75 | $ 0.00
Weighted average common shares outstanding |  |  |
Basic |  | 118,679 | 115,855
Diluted |  | 119,938 | 115,855
[1] | The cost of software license fees excludes charges for depreciation but includes amortization of purchased and developed software for resale. The cost of maintenance, services and hosting fees excludes charges for depreciation.

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