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CONDENSED CONSOLIDATED STATEMENTS OF INCOME AND COMPREHENSIVE INCOME (Unaudited) - USD ($) $ in Millions | 3 Months Ended
--- | ---
Mar. 31, 2019 | Mar. 31, 2018
Total revenues | $ 934 | $ 861
Costs and operating expenses: |  |
Insurance costs | 683 | 641
Cost of providing services | 64 | 57
Sales and marketing | 46 | 39
General and administrative | 36 | 31
Systems development and programming | 12 | 13
Depreciation and amortization of intangible assets | 11 | 9
Total costs and operating expenses | 852 | 790
Operating income | 82 | 71
Other income (expense): |  |
Interest expense, bank fees and other | (5) | (6)
Interest income | 6 | 2
Income before provision for income taxes | 83 | 67
Income tax expense | 20 | 13
Net income | 63 | 54
Comprehensive income | $ 63 | $ 54
Net income per share: |  |
Basic (in dollars per share) | $ 0.91 | $ 0.77
Diluted (in dollars per share) | $ 0.89 | $ 0.75
Weighted average shares: |  |
Basic (in shares) | 69,909,984 | 70,047,752
Diluted (in shares) | 71,247,427 | 72,274,821
Professional service revenues |  |
Total revenues | $ 136 | $ 129
Insurance service revenues |  |
Total revenues | $ 798 | $ 732

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