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Note 12 - Major Customers | 9 Months Ended
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Sep. 30, 2023
Notes to Financial Statements |
Concentration Risk Disclosure [Text Block] | 12. Major Customers Revenues from customers that exceeded 10 percent of total revenues for any of the periods presented below are as follows:
|  | For the Three Months Ended September 30, |  |  | For the Nine Months Ended September 30, |
|  | 2023 |  |  | 2022 |  |  | 2023 |  |  | 2022 |
(In thousands) |  | Revenues |  |  | Percent |  |  | Revenues |  |  | Percent |  |  | Revenues |  |  | Percent |  |  | Revenues |  |  | Percent |
Alpha Metallurgical Resources, Inc. (1) |  | $ | 17,219 |  |  |  | 20 | % |  | $ | 21,000 |  |  |  | 21 | % |  | $ | 61,122 |  |  |  | 22 | % |  | $ | 81,638 |  |  |  | 28 | %
Foresight Energy Resources LLC ("Foresight") (1) |  | $ | 18,600 |  |  |  | 22 | % |  | $ | 19,334 |  |  |  | 19 | % |  | $ | 43,453 |  |  |  | 16 | % |  | $ | 47,081 |  |  |  | 16 | %
(1) | Revenues from Alpha Metallurgical Resources, Inc. and Foresight are included within the Partnership's Mineral Rights segment.

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- Definition The entire disclosure for 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 Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 275 -Name Accounting Standards Codification -Publisher FASB -URI https://asc.fasb.org//275/tableOfContent + Details
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