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v3.20.4

Consolidated Statements Of Comprehensive Income - USD ($) shares in Thousands, $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
Income Statement [Abstract] |  |  |
Revenues | $ 1,265,052 | $ 1,231,661 | $ 1,214,969
Costs and expenses: |  |  |
Cost of revenues | 180,177 | 180,467 | 192,134
Sales and marketing | 36,790 | 46,637 | 64,891
Research and development | 74,671 | 60,805 | 57,884
General and administrative | 149,213 | 137,625 | 132,668
Total costs and expenses | 440,851 | 425,534 | 447,577
Operating income | 824,201 | 806,127 | 767,392
Interest expense | (90,144) | (90,611) | (114,845)
Non-operating income, net | 16,187 | 43,260 | 76,969
Income from continuing operations before income taxes | 750,244 | 758,776 | 729,516
Income tax (expense) benefit | 64,644 | (146,477) | (147,027)
Net income | 814,888 | 612,299 | 582,489
Other Comprehensive Income (Loss), Net of Tax | (135) | 190 | 130
Comprehensive income | $ 814,753 | $ 612,489 | $ 582,619
Earnings per share |  |  |
Earnings Per Share, Basic | $ 7.08 | $ 5.17 | $ 5.13
Earnings Per Share, Diluted | $ 7.07 | $ 5.15 | $ 4.75
Shares used to compute net income per share |  |  |
Basic | 115,058 | 118,513 | 113,452
Diluted | 115,298 | 118,968 | 122,661

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