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Revenues (Tables) | 12 Months Ended
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Dec. 31, 2023
Revenue from Contract with Customer [Abstract] |
Disaggregation of Revenue [Table Text Block] | The following table sets forth the Company’s revenues by major source (in thousands):
|  | Year Ended December 31, |
|  | 2023 |  |  | 2022 |  |  | 2021 |
Marine transportation segment: |  |  |  |  |  |  |  |  |
Inland transportation |  | $ | 1,416,483 |  |  | $ | 1,277,010 |  |  | $ | 1,005,145 |
Coastal transportation |  |  | 305,454 |  |  |  | 339,957 |  |  |  | 317,773 |
|  | $ | 1,721,937 |  |  | $ | 1,616,967 |  |  | $ | 1,322,918 |
Distribution and services segment: |  |  |  |  |  |  |  |  |
Commercial and industrial |  | $ | 802,474 |  |  | $ | 651,566 |  |  | $ | 578,011 |
Oil and gas |  |  | 567,229 |  |  |  | 516,221 |  |  |  | 345,731 |
|  | $ | 1,369,703 |  |  | $ | 1,167,787 |  |  | $ | 923,742 |

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- Definition Tabular disclosure of disaggregation of revenue into categories depicting how nature, amount, timing, and uncertainty of revenue and cash flows are affected by economic factor. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 606 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 5 -Publisher FASB -URI https://asc.fasb.org//1943274/2147479806/606-10-50-5 + Details
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