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Note 10 - Segment Information, Significant Customers, Industry Concentration and Geographic Areas | 12 Months Ended
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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.

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- Definition The entire disclosure for reporting segments including data and tables and also the entire disclosure of any concentrations existing at the date of the financial statements that make an entity vulnerable to a reasonably possible, near-term, severe impact. This disclosure informs financial statement users about the general nature of the risk associated with the concentration, and may indicate the percentage of concentration risk as of the balance sheet date. + References No definition available. + Details
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