Fair value portion of assets classified as held for sale.

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Amount before tax of gain (loss) recognized on the sale or disposal of a disposal group. Excludes discontinued operations.

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Amount, before tax, of (gain) loss recognized for the (reversal of write-down) write-down to fair value, less cost to sell, of a disposal group. Excludes discontinued operations.

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The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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The cash inflow associated with the amount received from the sale of a portion of the company's business, for example a segment, division, branch or other business, during the period.

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Amount of consideration receivable in the form of a note receivable for the disposal of assets and liabilities, including discontinued operation.

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Amount of contingent consideration received or receivable for the disposal of assets and liabilities, including discontinued operation.

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The number of vehicles.

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Divesture of Xpress Internacional (Details) $ in Thousands	1 Months Ended		3 Months Ended
Divesture of Xpress Internacional (Details) $ in Thousands	Jan. 31, 2019 USD ($) item	Dec. 31, 2018 USD ($)	Jun. 30, 2019 USD ($)
Tractors [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Fair value of assets held for sale	$ 2,500		$ 1,800
Xpress International [Member] \| Disposal Group, Held-for-sale, Not Discontinued Operations [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Ownership interest, as a percent	95.00%
Cash proceeds	$ 4,500
Note received in disposal	6,000		1,500
Contingent consideration received in disposal	$ 2,500
Number of tractors sold \| item	110
Impairment recognized		$ 10,700
Subsequent gain			$ 700