Note 8 - Revenue - Domestic Revenues an Export Revenues (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
REVENUES
Revenues	$ 167,411	$ 186,966	$ 495,403	$ 490,795
Domestic Coal Revenues
REVENUES
Revenues	54,073	75,143	163,588	168,571
Export Revenues
REVENUES
Revenues	$ 113,338	$ 111,823	$ 331,815	$ 322,224

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

Amount, including tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value-added and excise.

+ References

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+ Details