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v3.21.1

Prepaid Tires, Property, Equipment and Depreciation (Details) - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Mar. 31, 2021 | Dec. 31, 2020
Property, Plant and Equipment [Line Items] |  |
Amortization Period of Tires | two years |
Sold revenue equipment in other current assets | $ 200 | $ 3,400
Tractors [Member] |  |
Property, Plant and Equipment [Line Items] |  |
Property, Plant, and Equipment, Salvage Value | 15 |
Trailers [Member] |  |
Property, Plant and Equipment [Line Items] |  |
Property, Plant, and Equipment, Salvage Value | $ 4 |

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- Definition The net cash inflow or outflow during the period for the aggregate increase (decrease) associated with funds and investments that are not available for withdrawal or use (such as assets held in escrow or contractually limited as to use or disposition) and are associated with underlying transactions that are classified as investing activities. + References No definition available. + Details
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- Definition 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. + References No definition available. + Details
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- Definition The estimated or actual value of the asset at the end of its useful life or when it is no longer serviceable (cannot be used for its original purpose). + References No definition available. + Details
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- Details
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