Segment Reporting Information by Segment (Details) - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2019	Mar. 31, 2018
Segment Reporting Information [Line Items]
Revenues	$ 133,974	$ 125,013
Operating loss	3,921	2,392
Depreciation and amortization	8,818	7,180
Trucking
Segment Reporting Information [Line Items]
Revenues	94,561	78,733
Operating loss	1,609	(464)
Depreciation and amortization	8,579	7,026
Trucking \| Operating Segments
Segment Reporting Information [Line Items]
Revenues	94,902	78,846
Trucking \| Intersegment Eliminations
Segment Reporting Information [Line Items]
Revenues	(341)	(113)
USAT Logistics
Segment Reporting Information [Line Items]
Revenues	39,413	46,280
Operating loss	2,312	2,856
Depreciation and amortization	239	154
USAT Logistics \| Operating Segments
Segment Reporting Information [Line Items]
Revenues	41,449	46,775
USAT Logistics \| Intersegment Eliminations
Segment Reporting Information [Line Items]
Revenues	(2,036)	(495)
Foreign Countries \| Trucking \| Operating Segments
Segment Reporting Information [Line Items]
Revenues	$ 9,500	$ 9,900

The current period expense charged against earnings on long-lived, physical assets not used in production, and which are not intended for resale, to allocate or recognize the cost of such assets over their useful lives; or to record the reduction in book value of an intangible asset over the benefit period of such asset; or to reflect consumption during the period of an asset that is not used in production.

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