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Other Receivables (Tables) | 9 Months Ended
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Sep. 30, 2025
Receivables [Abstract] |
Schedule of other receivables | Other receivables as of December 31, 2024 and September 30, 2025 consisted of the following (in thousands): ​
​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | December 31, |  | September 30,
​ | ​ | 2024 |  | 2025
Accrued customer billings | ​ |  | 1,929 | ​ |  | 5,229
Fuel tax credits | ​ |  | 10,751 | ​ |  | 800
Other | ​ |  | 1,950 | ​ |  | 1,851
Total other receivables | ​ | $ | 14,630 | ​ | $ | 7,880
​

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- Definition Tabular disclosure of the carrying amounts of other receivables. + References No definition available. + Details
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- References No definition available. + Details
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