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Convertible Debentures - Additional Information (Detail) $ / shares in Units, $ / shares in Units, $ in Thousands, $ in Thousands |  |  |  |  |  |  |  |  |  | 12 Months Ended |  |  |
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Dec. 11, 2023 CAD ($) shares | Dec. 05, 2023 CAD ($) shares | Dec. 04, 2023 | Sep. 28, 2023 CAD ($) shares | Sep. 22, 2023 CAD ($) shares | Sep. 22, 2023 USD ($) $ / shares shares | Jun. 09, 2023 CAD ($) shares | Dec. 09, 2022 CAD ($) shares | Dec. 06, 2022 CAD ($) | Dec. 06, 2022 USD ($) shares | Jun. 10, 2022 CAD ($) shares | Dec. 31, 2023 CAD ($) shares | Dec. 31, 2023 USD ($) shares | Dec. 31, 2022 CAD ($) | Sep. 28, 2023 USD ($) | Sep. 28, 2023 $ / shares | Dec. 06, 2022 $ / shares | Aug. 18, 2020 USD ($) shares | Aug. 18, 2020 $ / shares
Convertible debentures [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Interest rate |  |  |  |  |  |  |  |  |  |  |  | 9.00% |  |  |  |  |  |  |
Stock issued during period shares | shares | 113,803 |  |  |  |  |  | 46,038 | 42,328 |  |  | 42,252 |  |  |  |  |  |  |  |
Stock issued during value | $ 1,064 |  |  |  |  |  | $ 270 | $ 235 |  |  | $ 251 | $ 1,498 |  | $ 486 |  |  |  |  |
2020 Debentures [member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Convertible debentures [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debentures increased |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 15,000 |  |  |  |
Interest rate |  |  |  |  |  |  |  |  |  |  |  |  |  | 7.50% |  |  |  |  |
Convertible debentures term |  |  |  | May 27, 2025 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shares issued on conversion of convertible debentures | shares |  |  |  | 8,663,461 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Stock issued during period related to accrued and unpaid interest | shares |  |  |  | 19,522 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Loss on conversion reclassified to accumulated deficit |  |  |  | $ 361 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Closing share price | $ / shares |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 8.4 |  |  |
2023 Debentures |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Convertible debentures [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Gross proceeds from issuance of convertible debentures |  |  |  |  | $ 148,145 | $ 110,000 |  |  |  |  |  |  |  |  |  |  |  |  |
Establishment fee, percent |  |  |  |  | 3.00% | 3.00% |  |  |  |  |  |  |  |  |  |  |  |  |
Establishment fee |  |  |  |  | $ 4,443 | $ 3,300 |  |  |  |  |  |  |  |  |  |  |  |  |
Establishment fee (shares) | shares |  |  |  |  | 634,615 | 634,615 |  |  |  |  |  |  |  |  |  |  |  |  |
Fair value on the issue date |  |  |  |  | $ 143,702 | $ 106,700 |  |  |  |  |  |  |  |  |  |  |  |  |
Convertible debentures face value |  |  |  |  |  | $ 110,000 |  |  |  |  |  |  |  |  |  |  |  |  |
Convertible debentures term |  |  |  |  | 5.0 years | 5.0 years |  |  |  |  |  | 4.7 years | 4.7 years |  |  |  |  |  |
Stock issued during period shares | shares |  |  |  |  |  |  |  |  |  |  |  | 113,803 | 113,803 |  |  |  |  |  |
Stock issued during value |  |  |  |  |  |  |  |  |  |  |  | $ 1,064 | $ 724 |  |  |  |  |  |
Interest expense on bonds |  |  |  |  |  |  |  |  |  |  |  | 1,967 | $ 1,448 |  |  |  |  |  |
Debt instrument convertible maximum shares issuable on conversion of debt | shares |  |  |  |  | 16,272,189 | 16,272,189 |  |  |  |  |  |  |  |  |  |  |  |  |
Debt instrument conversion price per share | $ / shares |  |  |  |  |  | $ 6.76 |  |  |  |  |  |  |  |  |  |  |  |  |
2020 IsoEnergy Debentures |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Convertible debentures [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Convertible debentures face value |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 6,000 |
Convetible debentures conversion price per share | $ / shares |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 0.88
Number of common shares issuable upon conversion of debentures. | shares |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 9,206,311 |
Convertible debentures term |  |  | 1.7 years |  |  |  |  |  |  |  |  |  |  | 2.6 years |  |  |  |  |
Stock issued during period shares | shares |  | 34,722 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Stock issued during value |  | $ 100 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Interest expense on bonds |  | $ 239 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
2022 IsoEnergy Debentures |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Convertible debentures [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Gross proceeds from issuance of convertible debentures |  |  |  |  |  |  |  |  | $ 5,460 | $ 4,000 |  |  |  |  |  |  |  |  |
Establishment fee, percent |  |  |  |  |  |  |  |  | 3.00% | 3.00% |  |  |  |  |  |  |  |  |
Establishment fee |  |  |  |  |  |  |  |  | $ 164 | $ 120 |  |  |  |  |  |  |  |  |
Fair value on the issue date |  |  |  |  |  |  |  |  | $ 5,296 | 3,880 |  |  |  |  |  |  |  |  |
Convertible debentures face value |  |  |  |  |  |  |  |  |  | $ 4,000 |  |  |  |  |  |  |  |  |
Convetible debentures conversion price per share | $ / shares |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 4.33 |  |
Number of common shares issuable upon conversion of debentures. | shares |  |  |  |  |  |  |  |  |  | 1,464,281 |  |  |  |  |  |  |  |  |
Convertible debentures term |  |  | 4.0 years |  |  |  |  |  |  |  |  |  |  | 4.9 years |  |  |  |  |
Stock issued during period shares | shares |  | 23,148 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Stock issued during value |  | $ 67 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Interest expense on bonds |  | $ 199 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Convertible debentures [member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Convertible debentures [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Comprehensive income (loss) |  |  |  |  |  |  |  |  |  |  |  | 1,432 |  | $ 149 |  |  |  |  |
Debentures increased |  |  |  |  |  |  |  |  |  |  |  | 158,478 |  | 80,021 |  |  |  |  |
Gains (losses) recognised in profit or loss, fair value measurement, liabilities |  |  |  |  |  |  |  |  |  |  |  | 48,745 |  | 2,863 |  |  |  |  |
Mark-to-market loss on convertible debentures (Note 9) |  |  |  |  |  |  |  |  |  |  |  | 50,177 |  | 2,714 |  |  |  |  |
Interest expense on convertible debentures |  |  |  |  |  |  |  |  |  |  |  | $ 6,098 |  | $ 2,179 |  |  |  |  |

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