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v3.8.0.1

Consolidated Statements of Operations - USD ($) shares in Thousands, $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2017 | Dec. 31, 2016 | Dec. 31, 2015
Revenues: |  |  |
Professional employer service fees | $ 758,046 | $ 673,924 | $ 572,286
Staffing services | 162,386 | 166,662 | 168,555
Total revenues | 920,432 | 840,586 | 740,841
Cost of revenues: |  |  |
Direct payroll costs | 122,533 | 126,753 | 127,964
Payroll taxes and benefits | 404,687 | 357,867 | 312,284
Workers' compensation | 234,681 | 210,430 | 171,137
Total cost of revenues | 761,901 | 695,050 | 611,385
Gross margin | 158,531 | 145,536 | 129,456
Selling, general and administrative expenses | 123,138 | 113,342 | 90,177
Depreciation and amortization | 5,452 | 3,253 | 2,851
Income from operations | 29,941 | 28,941 | 36,428
Other income (expense): |  |  |
Investment income, net | 4,668 | 956 | 771
Interest expense | (313) | (807) | (1,965)
Loss on litigation |  | (3,544) |
Other, net | 82 | 40 | (88)
Other income (expense), net | 4,437 | (3,355) | (1,282)
Income before income taxes | 34,378 | 25,586 | 35,146
Provision for income taxes | 9,208 | 6,787 | 9,652
Net income | $ 25,170 | $ 18,799 | $ 25,494
Basic income per common share | $ 3.46 | $ 2.60 | $ 3.55
Weighted average number of basic common shares outstanding | 7,275 | 7,226 | 7,173
Diluted income per common share | $ 3.33 | $ 2.55 | $ 3.47
Weighted average number of diluted common shares outstanding | 7,551 | 7,378 | 7,353
Cash dividends per common share | $ 1.00 | $ 0.88 | $ 0.88

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