Condensed Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands |
3 Months Ended | 9 Months Ended | ||||||
|---|---|---|---|---|---|---|---|---|
Sep. 30, 2021 |
Sep. 30, 2020 |
Sep. 30, 2021 |
Sep. 30, 2020 |
|||||
| Income Statement [Abstract] | ||||||||
| Operating revenues | $ 419,625 | $ 331,997 | $ 1,202,498 | $ 919,232 | ||||
| Operating expenses: | ||||||||
| Purchased transportation | 205,474 | 173,054 | 605,299 | 465,721 | ||||
| Salaries, wages and employee benefits | 84,410 | 66,927 | 243,948 | 200,258 | ||||
| Operating leases | 20,536 | 17,327 | 60,073 | 52,598 | ||||
| Depreciation and amortization | 9,416 | 9,172 | 28,067 | 27,919 | ||||
| Insurance and claims | 9,984 | 8,671 | 30,616 | 26,437 | ||||
| Fuel expense | 4,457 | 2,715 | 12,218 | 9,247 | ||||
| Other operating expenses | 42,872 | 30,621 | 114,953 | 83,854 | ||||
| Total operating expenses | 377,149 | 308,487 | 1,095,174 | 866,034 | ||||
| Income from continuing operations | 42,476 | 23,510 | 107,324 | 53,198 | ||||
| Other expense: | ||||||||
| Interest expense | (973) | (1,304) | (3,461) | (3,355) | ||||
| Total other expense | (973) | (1,304) | (3,461) | (3,355) | ||||
| Income before income taxes | 41,503 | 22,206 | 103,863 | 49,843 | ||||
| Income tax expense | 11,000 | 5,214 | 25,969 | 12,209 | ||||
| Net income from continuing operations | 30,503 | 16,992 | 77,894 | 37,634 | ||||
| Loss from discontinued operation, net of tax | (6,967) | (345) | (12,500) | (9,458) | ||||
| Net income and comprehensive income | $ 23,536 | $ 16,647 | $ 65,394 | $ 28,176 | ||||
| Basic net income (loss) per share | ||||||||
| Continuing operations (in dollars per share) | $ 1.12 | $ 0.61 | $ 2.84 | $ 1.35 | ||||
| Discontinued operation (in dollars per share) | (0.26) | (0.01) | (0.46) | (0.34) | ||||
| Net income per basic share (in dollars per share) | 0.86 | 0.60 | 2.39 | [1] | 1.01 | [1] | ||
| Diluted net income (loss) per share | ||||||||
| Continuing operations (in dollars per share) | 1.12 | 0.61 | 2.83 | 1.35 | ||||
| Discontinued operation (in dollars per share) | (0.26) | (0.01) | (0.46) | (0.34) | ||||
| Net income per diluted share (in dollars per share) | 0.86 | 0.60 | 2.37 | 1.01 | ||||
| Dividends per share (in dollars per share) | $ 0.21 | $ 0.18 | $ 0.63 | $ 0.54 | ||||
| ||||||||
| X | ||||||||||
- Definition Aggregate dividends declared during the period for each share of common stock outstanding. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Total costs of sales and operating expenses for the period. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition The aggregate expense recognized in the current period that allocates the cost of tangible assets, intangible assets, or depleting assets to periods that benefit from use of the assets. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
| X | ||||||||||
- Definition Per basic share amount, after tax, of income (loss) from the day-to-day business activities of the discontinued operation. No definition available.
|
| X | ||||||||||
- Definition Per diluted share amount, after tax, of income (loss) from the day-to-day business activities of the discontinued operation. No definition available.
|
| X | ||||||||||
- Definition The amount of net income (loss) for the period per each share of common stock or unit outstanding during the reporting period. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
| X | ||||||||||
- References No definition available.
|
| X | ||||||||||
- Definition The amount of net income (loss) for the period available to each share of common stock or common unit outstanding during the reporting period and to each share or unit that would have been outstanding assuming the issuance of common shares or units for all dilutive potential common shares or units outstanding during the reporting period. Reference 1: http://www.xbrl.org/2003/role/exampleRef
|
| X | ||||||||||
- References No definition available.
|
| X | ||||||||||
- Definition Fuel costs incurred that are directly related to goods produced and sold and services rendered during the reporting period. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Amount after tax of income (loss) from continuing operations attributable to the parent. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Amount of income (loss) from continuing operations, including income (loss) from equity method investments, before deduction of income tax expense (benefit), and income (loss) attributable to noncontrolling interest. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
| X | ||||||||||
- Definition The amount of net income (loss) from continuing operations per each share of common stock or unit outstanding during the reporting period. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
| X | ||||||||||
- Definition The amount of net income (loss) derived from continuing operations during the period available to each share of common stock or common unit outstanding during the reporting period and to each share or unit that would have been outstanding assuming the issuance of common shares or units for all dilutive potential common shares or units outstanding during the reporting period. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
| X | ||||||||||
- Definition Amount after tax of income (loss) from a discontinued operation attributable to the parent. Includes, but is not limited to, the income (loss) from operations during the phase-out period, gain (loss) on disposal, gain (loss) for reversal of write-down (write-down) to fair value, less cost to sell, and adjustments to a prior period gain (loss) on disposal. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- References No definition available.
|
| X | ||||||||||
- Definition Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
| X | ||||||||||
- Definition Amount of the cost of borrowed funds accounted for as interest expense. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
| X | ||||||||||
- Definition Amount of expense for salary, wage, profit sharing; incentive and equity-based compensation; and other employee benefit. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
|
| X | ||||||||||
- Definition The portion of profit or loss for the period, net of income taxes, which is attributable to the parent. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition The aggregate amount of income or expense from ancillary business-related activities (that is to say, excluding major activities considered part of the normal operations of the business). Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- References No definition available.
|
| X | ||||||||||
- Definition Generally recurring costs associated with normal operations except for the portion of these expenses which can be clearly related to production and included in cost of sales or services. Excludes Selling, General and Administrative Expense. No definition available.
|
| X | ||||||||||
- References No definition available.
|
| X | ||||||||||
- Definition The net result for the period of deducting operating expenses from operating revenues. Reference 1: http://www.xbrl.org/2003/role/exampleRef
|
| X | ||||||||||
- Definition Insurance and claims costs directly related to goods produced and sold, or services rendered, during the reporting period. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Amount of operating lease expense. Excludes sublease income. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
|
| X | ||||||||||
- Definition The total amount of other operating cost and expense items that are associated with the entity's normal revenue producing operation. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Amount, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|