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DEFERRED REVENUE (Tables) | 12 Months Ended
--- | ---
Dec. 31, 2023
DEFERRED REVENUE |
Summary of deferred revenue balance | ​
​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | At December 31 | ​ | At December 31
(in thousands) |  | 2023 |  | 2022
Deferred revenue-pre-sold toll milling: |  |  | ​ | ​ | ​ | ​
CLJV Toll Milling-Ecora | ​ | $ | 34,958 |  | $ | 33,295
​ | ​ | $ | 34,958 |  | $ | 33,295
Deferred revenue-by balance sheet presentation: | ​ | ​ | ​ | ​ | ​ | ​
Current | ​ | $ | 4,535 |  | $ | 4,915
Non-current | ​ | ​ | 30,423 | ​ | ​ | 28,380
​ | ​ | $ | 34,958 |  | $ | 33,295
Summary of deferred revenue liability continuity | ​
​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | ​ | ​ | ​ | ​ | ​
(in thousands) |  | 2023 |  | 2022
​ | ​ | ​ | ​ | ​ | ​ | ​
Balance-January 1 |  | $ | 33,295 |  | $ | 36,508
Revenue recognized during the period (note 21) | ​ | ​ | (1,855) | ​ | ​ | (5,987)
Accretion (note 20) | ​ | ​ | 3,518 | ​ | ​ | 2,774
Balance-December 31 |  | $ | 34,958 |  | $ | 33,295

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