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v3.24.1.u1

Segment Information - Revenue from External Customers (Details) $ in Thousands | 3 Months Ended
--- | ---
Mar. 31, 2024 USD ($) customer | Mar. 31, 2023 USD ($) customer
Revenues from External Customers and Long-Lived Assets [Line Items] |  |
Revenues | $ 861,283 | $ 906,698
Total revenues | 864,072 | 911,235
Export Coal Revenue |  |
Revenues from External Customers and Long-Lived Assets [Line Items] |  |
Revenues | $ 701,301 | $ 678,131
Revenues | Geographic Concentration Risk | Export Coal Revenue |  |
Revenues from External Customers and Long-Lived Assets [Line Items] |  |
Concentration risk (as a percent) | 81.00% | 75.00%
Revenues | Customer Concentration Risk |  |
Revenues from External Customers and Long-Lived Assets [Line Items] |  |
Number of customers exceeding 10% of total | customer | 4 | 4
Revenues | Customer Concentration Risk | Top Customer |  |
Revenues from External Customers and Long-Lived Assets [Line Items] |  |
Concentration risk (as a percent) | 16.00% | 17.00%
Revenues | Customer Concentration Risk | Top 10 Customers |  |
Revenues from External Customers and Long-Lived Assets [Line Items] |  |
Concentration risk (as a percent) | 81.00% | 78.00%
Accounts Receivable | Customer Concentration Risk |  |
Revenues from External Customers and Long-Lived Assets [Line Items] |  |
Number of customers exceeding 10% of total | customer | 3 | 3

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