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v3.8.0.1

Consolidated Statements of Income - USD ($) shares in Thousands, $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2017 | Dec. 31, 2016 | Dec. 31, 2015
Operating revenues | $ 2,116,737 | $ 2,008,991 | $ 2,093,529
Operating expenses: |  |  |
Salaries, wages and benefits | 681,547 | 636,112 | 639,908
Fuel | 198,745 | 155,042 | 204,583
Supplies and maintenance | 164,325 | 171,397 | 190,114
Taxes and licenses | 86,768 | 85,547 | 89,646
Insurance and claims | 79,927 | 83,866 | 80,848
Depreciation | 217,639 | 209,728 | 193,209
Rent and purchased transportation | 509,573 | 512,296 | 480,624
Communications and utilities | 16,105 | 16,106 | 15,121
Other | 18,288 | 12,827 | (980)
Total operating expenses | 1,972,917 | 1,882,921 | 1,893,073
Operating income | 143,820 | 126,070 | 200,456
Other expense (income): |  |  |
Interest expense | 2,243 | 2,577 | 1,974
Interest income | (3,308) | (4,158) | (2,875)
Other | 328 | 191 | 196
Total other income | (737) | (1,390) | (705)
Income before income taxes | 144,557 | 127,460 | 201,161
Income tax expense (benefit) | (58,332) | 48,331 | 77,447
Net income | $ 202,889 | $ 79,129 | $ 123,714
Earnings per share: |  |  |
Basic | $ 2.81 | $ 1.10 | $ 1.72
Diluted | $ 2.80 | $ 1.09 | $ 1.71
Weighted-average common shares outstanding: |  |  |
Basic | 72,270 | 72,057 | 71,957
Diluted | 72,558 | 72,393 | 72,556

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