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v3.6.0.2

Consolidated Statements of Operations - USD ($) shares in Thousands, $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2016 | Dec. 31, 2015 | Dec. 31, 2014
Revenues |  |  |
Freight revenue | $ 610,845 | $ 640,120 | $ 578,204
Fuel surcharge revenue | 59,806 | 84,120 | 140,776
Total revenue | 670,651 | 724,240 | 718,980
Operating expenses: |  |  |
Salaries, wages, and related expenses | 234,526 | 244,779 | 231,761
Fuel expense | 103,108 | 122,160 | 168,856
Operations and maintenance | 45,864 | 46,458 | 47,251
Revenue equipment rentals and purchased transportation | 117,472 | 118,583 | 111,772
Operating taxes and licenses | 11,712 | 11,016 | 10,960
Insurance and claims | 32,596 | 31,909 | 39,594
Communications and utilities | 6,057 | 6,162 | 5,806
General supplies and expenses | 14,413 | 14,007 | 16,950
Depreciation and amortization, including gains and losses on disposition of equipment | 72,456 | 61,384 | 46,384
Total operating expenses | 638,204 | 656,458 | 679,334
Operating income | 32,447 | 67,782 | 39,646
Interest expense, net | 8,226 | 8,445 | 10,794
Equity in income of affiliate | 3,000 | 4,570 | 3,730
Income before income taxes | 27,221 | 63,907 | 32,582
Income tax expense | 10,386 | 21,822 | 14,774
Net income | $ 16,835 | $ 42,085 | $ 17,808
Income per share: |  |  |
Basic income per share: (in dollars per share) | $ 0.93 | $ 2.32 | $ 1.17
Diluted income per share: (in dollars per share) | $ 0.92 | $ 2.30 | $ 1.15
Basic weighted average shares outstanding (in shares) | 18,182 | 18,145 | 15,250
Diluted weighted average shares outstanding (in shares) | 18,266 | 18,311 | 15,517

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