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v3.20.4

Consolidated Statements of Comprehensive Income - USD ($) shares in Thousands, $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
OPERATING REVENUE | $ 645,262 | $ 596,815 | $ 610,803
Operating Expenses |  |  |
Salaries, wages and benefits | 269,482 | 240,139 | 227,872
Rent and purchased transportation | 4,643 | 7,984 | 18,700
Fuel | 86,094 | 101,871 | 110,536
Operations and maintenance | 27,647 | 24,479 | 27,143
Operating taxes and licenses | 14,962 | 14,459 | 16,390
Insurance and claims | 22,229 | 17,003 | 17,227
Communications and utilities | 5,281 | 4,953 | 6,086
Depreciation and amortization | 109,937 | 100,212 | 100,519
Other operating expenses | 26,398 | 22,781 | 21,506
Gain on disposal of property and equipment | (14,830) | (31,341) | (24,963)
Total operating expenses | 551,843 | 502,540 | 521,016
Operating income | 93,419 | 94,275 | 89,787
Interest income | 842 | 3,955 | 2,130
Interest expense | 0 | (1,052) | 0
Income before income taxes | 94,261 | 97,178 | 91,917
Federal and state income tax expense | 23,455 | 24,211 | 19,240
Net income | 70,806 | 72,967 | 72,677
Other comprehensive income, net of tax | 0 | 0 | 0
Comprehensive income | $ 70,806 | $ 72,967 | $ 72,677
Net income per share |  |  |
Basic | $ 0.87 | $ 0.89 | $ 0.88
Diluted | $ 0.87 | $ 0.89 | $ 0.88
Weighted average shares outstanding |  |  |
Basic | 81,388 | 81,980 | 82,378
Diluted | 81,444 | 82,024 | 82,410
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