Asset Acquisition - Red River (Details) - Red River $ in Thousands	Oct. 01, 2018 USD ($) truck trailer
Business Acquisition [Line Items]
Cash payment for acquisition	$ 10,000
Number of tractor trailer trucks \| truck	113
Number of trailers \| trailer	126
Acquisition related costs	$ 300
Purchase price	10,300
Purchase Price Allocation
Tractors	4,799
Trailers	4,901
Field equipment	381
Materials and supplies	191
Total purchase price	$ 10,272

Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Field Equipment

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Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Materials and Supplies

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Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Tractors

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Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Trailers

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Number of Tractor Trailer Trucks

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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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This element represents acquisition-related costs incurred to effect a business combination which costs have been expensed during the period. Such costs include finder's fees; advisory, legal, accounting, valuation, and other professional or consulting fees; general administrative costs, including the costs of maintaining an internal acquisitions department; and may include costs of registering and issuing debt and equity securities.

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Amount of consideration transferred, consisting of acquisition-date fair value of assets transferred by the acquirer, liabilities incurred by the acquirer, and equity interest issued by the acquirer.

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Amount recognized as of the acquisition date for the identifiable assets acquired in excess of (less than) the aggregate liabilities assumed.

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The cash outflow associated with the acquisition of business during the period. The cash portion only of the acquisition price.

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