Segment Reporting (Tables)

12 Months Ended

Dec. 31, 2018

Segment Reporting [Abstract]

Schedule of Segment Reporting Information, by Segment

A summary of operating revenue by segment is as follows (in thousands):

	Year Ended December 31,
Operating revenue:	2018		2017		2016
Trucking revenue (1)	$	351,222	$	302,943	$	295,807
Trucking intersegment eliminations	(3,493)		(891)		(1,281)
Trucking operating revenue	347,729		302,052		294,526
USAT Logistics revenue (2)	190,992		152,137		140,847
USAT Logistics intersegment eliminations	(4,661)		(7,656)		(6,274)
USAT Logistics operating revenue	186,331		144,481		134,573
Total operating revenue	$	534,060	$	446,533	$	429,099

1.Includes foreign revenue of $41.5 million, $35.5 million, and $36.9 million for the years ended December 31, 2018, 2017 and 2016, respectively.  All foreign revenue is collected in U.S. dollars. 

2.USAT Logistics de Mexico was established on March 4, 2017, and operations were closed during the first quarter of 2018.  Foreign revenue from USAT Logistics de Mexico was $0.8 million and $2.1 million for the years ended December 31, 2018 and 2017, respectively.  All foreign revenue is collected in U.S. dollars.

A summary of operating income (loss) by segment is as follows (in thousands):

	Year Ended December 31,
Operating income (loss)	2018		2017		2016
Trucking	$	11,710	$	(9,667)	$	(14,789)
USAT Logistics	9,509		7,599		7,273
Total operating income (loss)	$	21,219	$	(2,068)	$	(7,516)

A summary of depreciation and amortization by segment is as follows (in thousands):

	Year Ended December 31,
Depreciation and amortization:	2018		2017		2016
Trucking	$	27,632	$	28,002	$	29,467
USAT Logistics	692		461		487
Total depreciation and amortization	$	28,324	$	28,463	$	29,954