Note 10 - Segment Information, Significant Customers, Industry Concentration and Geographic Areas

12 Months Ended

Dec. 31, 2021

Notes to Financial Statements

Segment Reporting and Concentration Risk Disclosure [Text Block]

10. SEGMENT INFORMATION, SIGNIFICANT CUSTOMERS, INDUSTRY CONCENTRATION AND GEOGRAPHIC AREAS

The Company's revenues for 2021, 2020 and 2019 were all generated from operations in the motor carrier segment and are aggregated into a single reporting segment in accordance with the aggregation criteria under GAAP.

The table below presents revenue dollars and percentages by geographic area:

	Year Ended December 31,
	2021					2020					2019
	(in thousands)
	Amount		Percent			Amount		Percent			Amount		Percent
United States - domestic shipments	$	474,291		67.9		$	316,542		66.1		$	326,559		63.5
Shipments to or from Mexico		223,315		32.0			161,412		33.7			186,392		36.3
Shipments to or from Canada		891		0.1			1,156		0.2			1,226		0.2
Total Operating Revenues	$	698,497		100	%	$	479,110		100	%	$	514,177		100	%

Our five largest customers, for which we provide carrier services covering a number of geographic locations, accounted for approximately 33%, 35% and 40% of our total revenues in 2021, 2020 and 2019, respectively. General Motors Company accounted for approximately 11%, 15% and 19% of our revenues in 2021, 2020 and 2019, respectively.

We also provide transportation services to other manufacturers who are suppliers for automobile manufacturers. Approximately 27%, 30% and 40% of our revenues were derived from transportation services provided to the automobile industry during 2021, 2020 and 2019, respectively.

Accounts receivable from the three largest customers totaled approximately $31,049,000 and $25,593,000 at December 31, 2021 and 2020, respectively.