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Cash and Cash Equivalents (Tables) | 12 Months Ended
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Dec. 31, 2024
Cash and cash equivalents [abstract] |
Summary of Cash and cash equivalent balance | ​
​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | ​ | ​ | ​ | ​ | ​
​ |  | At December 31 |  | At December 31
(in thousands) | ​ | 2024 | ​ | 2023
​ | ​ | ​ | ​ | ​ | ​ | ​
Cash | ​ | $ | 1,113 | ​ | $ | 2,650
Cash in MLJV and MWJV | ​ |  | 2,969 | ​ |  | 1,036
Cash equivalents | ​ |  | 104,436 | ​ |  | 127,368
​ | ​ | $ | 108,518 | ​ | $ | 131,054

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