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v3.20.4

Consolidated Statements of Income - USD ($) shares in Thousands, $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
Operating revenues | $ 2,372,178 | $ 2,463,701 | $ 2,457,914
Operating expenses: |  |  |
Salaries, wages and benefits | 795,847 | 818,487 | 781,064
Fuel | 157,124 | 235,928 | 254,564
Supplies and maintenance | 175,842 | 182,909 | 185,074
Taxes and licenses | 95,746 | 95,525 | 87,318
Insurance and claims | 109,816 | 88,913 | 98,133
Depreciation | 263,286 | 249,527 | 230,151
Rent and purchased transportation | 519,184 | 549,438 | 589,002
Communications and utilities | 14,474 | 15,303 | 16,063
Other | 13,421 | 2,199 | (7,670)
Total operating expenses | 2,144,740 | 2,238,229 | 2,233,699
Operating income | 227,438 | 225,472 | 224,215
Other expense (income): |  |  |
Interest expense | 4,215 | 6,854 | 2,695
Interest income | (1,634) | (3,326) | (2,737)
Other | 163 | 38 | 376
Total other expense (income) | 2,744 | 3,566 | 334
Income before income taxes | 224,694 | 221,906 | 223,881
Income tax expense | 55,616 | 54,962 | 55,733
Net income | $ 169,078 | $ 166,944 | $ 168,148
Earnings per share: |  |  |
Basic | $ 2.45 | $ 2.40 | $ 2.35
Diluted | $ 2.44 | $ 2.38 | $ 2.33
Weighted-average common shares outstanding: |  |  |
Basic | 69,018 | 69,567 | 71,694
Diluted | 69,427 | 70,026 | 72,057

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