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v3.20.2

Consolidated Statements of Comprehensive Income - USD ($) shares in Thousands, $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017
OPERATING REVENUE | $ 596,815 | $ 610,803 | $ 607,336
Operating Expenses |  |  |
Salaries, wages and benefits | 240,139 | 227,872 | 236,872
Rent and purchased transportation | 7,984 | 18,700 | 30,002
Fuel | 101,871 | 110,536 | 104,381
Operations and maintenance | 24,479 | 27,143 | 29,609
Operating taxes and licenses | 14,459 | 16,390 | 16,615
Insurance and claims | 17,003 | 17,227 | 18,850
Communications and utilities | 4,953 | 6,086 | 5,781
Depreciation and amortization | 100,212 | 100,519 | 103,690
Other operating expenses | 22,781 | 21,506 | 24,666
Gain on disposal of property and equipment | (31,341) | (24,963) | (26,674)
Total operating expenses | 502,540 | 521,016 | 543,792
Operating income | 94,275 | 89,787 | 63,544
Interest income | 3,955 | 2,130 | 1,129
Interest expense | (1,052) | 0 | (175)
Income before income taxes | 97,178 | 91,917 | 64,498
Federal and state income tax (benefit) expense | 24,211 | 19,240 | (10,675)
Net income | 72,967 | 72,677 | 75,173
Other comprehensive income, net of tax | 0 | 0 | 0
Comprehensive income | $ 72,967 | $ 72,677 | $ 75,173
Net income per share |  |  |
Basic | $ 0.89 | $ 0.88 | $ 0.90
Diluted | $ 0.89 | $ 0.88 | $ 0.90
Weighted average shares outstanding |  |  |
Basic | 81,980 | 82,378 | 83,298
Diluted | 82,024 | 82,410 | 83,336
Dividends declared per share | $ 0.08 | $ 0.08 | $ 0.08

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- Definition Number of [basic] shares or units, after adjustment for contingently issuable shares or units and other shares or units not deemed outstanding, determined by relating the portion of time within a reporting period that common shares or units have been outstanding to the total time in that period. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 45 -Paragraph 10 -URI http://asc.fasb.org/extlink&oid=117326831&loc=d3e1448-109256 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration