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Share Capital | 12 Months Ended
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Dec. 31, 2024
Share Capital [Abstract] |
Share Capital | 14.SHARE CAPITAL Denison is authorized to issue an unlimited number of common shares without par value. A continuity summary of the issued and outstanding common shares and the associated dollar amounts is presented below: ​
​ | ​ | ​ | ​ | ​ | ​
​ | ​ | ​ | ​ | ​
​ |  | Number of |  | ​
​ | ​ | Common | ​ | ​
(in thousands except share amounts) | ​ | Shares | ​ | Share Capital
​ |  | ​ |  | ​ | ​
Balance-January 1, 2023 |  | 826,325,592 | ​ | $ | 1,539,209
Issued for cash: |  |  | ​ |  |
Shares issued proceeds-total |  | 56,786,160 | ​ |  | 112,969
Less: share issue costs |  | — | ​ |  | (5,085)
Other share issue proceeds-total |  | 153,237 | ​ |  | 213
Less: other share issue costs |  | — | ​ |  | (20)
Share option exercises |  | 4,559,047 | ​ |  | 3,534
Share option exercises-transfer from contributed surplus |  | — | ​ |  | 1,474
Share unit exercises-transfer from contributed surplus |  | 3,146,335 | ​ |  | 2,730
​ |  | 64,644,779 | ​ |  | 115,815
Balance-December 31, 2023 |  | 890,970,371 | ​ | $ | 1,655,024
​ | ​ | ​ | ​ | ​ | ​
Issued for cash: |  |  | ​ |  |
Shares issued proceeds-total |  | 3,000,000 | ​ |  | 14,100
Less: flow-through share premium | ​ | — | ​ | ​ | (5,850)
Less: share issue costs |  | — | ​ |  | (722)
Other share issue proceeds-total |  | 41,895 | ​ |  | 111
Less: other share issue costs | ​ | — | ​ | ​ | (16)
Share option exercises |  | 1,105,167 | ​ |  | 1,373
Share option exercises-transfer from contributed surplus |  | — | ​ |  | 647
Share unit exercises-transfer from contributed surplus |  | 595,668 | ​ |  | 522
​ |  | 4,742,730 | ​ |  | 10,165
Balance-December 31, 2024 |  | 895,713,101 | ​ | $ | 1,665,189
​ Flow-Through Share Issues During the year ended December 31, 2024, the Company completed a private placement of 3,000,000 flow-through common shares at a price of $4.70 per share for gross proceeds of $14,100,000. The income tax benefits of this issue were renounced to subscribers with an effective date of December 31, 2024. The related flow-through share premium liabilities are included as a component of other liabilities on the statement of financial position as at December 31, 2024 and will be extinguished during 2025 when the tax benefit is renounced to the shareholders (see note 12). Unit and Other Share Issues In 2023, the Company issued 19,786,160 common shares under the 2021 ATM Program for gross proceeds of $37,887,000. Additionally, the Company completed a bought deal public offering by way of a prospectus supplement to the 2021 Shelf Prospectus of 37,000,000 common shares of the Company for gross proceeds of $75,082,000.

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- Definition The disclosure of classes of share capital. [Refer: Classes of share capital [domain]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 1 -IssueDate 2024-01-01 -Paragraph 79 -Subparagraph a -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2024-en-r&anchor=para_79_a&doctype=Standard -URIDate 2024-03-27 + Details
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