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Share capital (Tables) | 9 Months Ended
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Jun. 30, 2025
Share capital |
Schedule of stock option activity | ​
​ | ​ | ​ | ​ | ​ | ​
​ | ​ | ​ | ​ | Weighted average
​ |  | ​ |  | exercise price per share
​ | ​ | Number of options | ​ | in Canadian dollars (C$)
Balance September 30, 2023 |  | 3,957 | ​ | C$ | 4.49
Exercised | ​ | (519) | ​ | ​ | 1.50
Expired |  | (15) | ​ | ​ | 7.76
Forfeited |  | (3) | ​ | ​ | 8.48
Balance June 30, 2024 |  | 3,420 | ​ | C$ | 4.92
​ | ​ | ​ | ​ | ​ | ​
Balance September 30, 2024 |  | 3,402 | ​ | C$ | 4.91
Granted | ​ | 425 | ​ | ​ | 3.40
Expired |  | (49) | ​ |  | 6.98
Balance June 30, 2025 |  | 3,778 | ​ | C$ | 4.70
Schedule of assumptions used in valuation of stock options | ​
​ | ​ | ​ | ​ | ​
​ |  | Nine months | ​
​ | ​ | ended June 30, | ​
​ | ​ | 2025 | ​
Share price at grant date | ​ | ​ | C$3.40 | ​
Risk-free interest rate | ​ | ​ | 4.25% | ​
Expected volatility | ​ | ​ | 242.4% | ​
Expected life of option | ​ | ​ | 10 years | ​
Expected dividend yield | ​ | ​ | Nil | ​
Schedule of restricted share units activity | ​
​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | ​ | ​ | Weighted average | ​
​ | ​ | ​ | ​ | grant-date price | ​
​ |  | Number |  | per share in |
​ | ​ | of units | ​ | Canadian dollars (C$) |
Balance September 30, 2023 |  | 1,034 | ​ | C$ | 8.34 | ​
Settled |  | (515) | ​ |  | 8.38 | ​
Balance June 30, 2024 |  | 519 | ​ | C$ | 8.30 | ​
​ | ​ | ​ | ​ | ​ | ​ | ​
Balance September 30, 2024 |  | 519 | ​ | C$ | 8.30 | ​
Granted | ​ | 2,479 | ​ | ​ | 3.40 | ​
Settled |  | (415) | ​ |  | 8.30 | ​
Balance June 30, 2025 |  | 2,583 | ​ | C$ | 3.60 | ​
Schedule of stock-based compensation expense | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ |  | Three Months |  | Three Months |  | Nine months |  | Nine months
​ | ​ | Ended June 30, | ​ | Ended June 30, | ​ | Ended June 30, | ​ | Ended June 30,
​ | ​ | 2025 | ​ | 2024 | ​ | 2025 | ​ | 2024
Restricted share units | ​ | $ | 1,809 | ​ | $ | 322 | ​ | $ | 2,141 | ​ | $ | 1,423
Stock options | ​ | ​ | 311 | ​ | ​ | 161 | ​ | ​ | 484 | ​ | ​ | 731
Stock-based compensation expense | ​ | $ | 2,120 | ​ | $ | 483 | ​ | $ | 2,625 | ​ | $ | 2,154

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- Definition Tabular disclosure of allocation of amount expensed and capitalized for award under share-based payment arrangement to statement of income or comprehensive income and statement of financial position. Includes, but is not limited to, corresponding line item in financial statement. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (h)(1) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480429/718-10-50-2 + Details
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- Definition Tabular disclosure of the number and weighted-average grant date fair value for restricted stock units that were outstanding at the beginning and end of the year, and the number of restricted stock units that were granted, vested, or forfeited during the year. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 718 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (c)(1) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480429/718-10-50-2 + Details
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- Definition Tabular disclosure for stock option plans. Includes, but is not limited to, outstanding awards at beginning and end of year, grants, exercises, forfeitures, and weighted-average grant date fair value. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 718 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (c)(1) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480429/718-10-50-2 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (d) -SubTopic 10 -Topic 718 -Publisher FASB -URI https://asc.fasb.org/1943274/2147480429/718-10-50-2 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (e) -SubTopic 10 -Topic 718 -Publisher FASB -URI https://asc.fasb.org/1943274/2147480429/718-10-50-2 + Details
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- Definition Tabular disclosure of the significant assumptions used during the year to estimate the fair value of stock options, including, but not limited to: (a) expected term of share options and similar instruments, (b) expected volatility of the entity's shares, (c) expected dividends, (d) risk-free rate(s), and (e) discount for post-vesting restrictions. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 718 -SubTopic 10 -Subparagraph (f)(2) -Name Accounting Standards Codification -Paragraph 2 -Section 50 -Publisher FASB -URI https://asc.fasb.org/1943274/2147480429/718-10-50-2 + Details
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