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Share capital, stock options and other stock-based plans (Tables) | 6 Months Ended
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Jun. 30, 2025
Share-Based Payment Arrangement [Abstract] |
Schedule of Share-based Compensation, Stock Options, Activity | A continuity of the Units issued under the Westport Omnibus Plan are as follows:
|  | Six months ended June 30, 2025 |  | Six months ended June 30, 2024
|  | Number of Units |  | Weighted average grant date fair value (CDN $) |  | Number of Units |  | Weighted average grant date fair value (CDN $)
Outstanding, beginning of period |  | 524,322 |  |  | $ | 11.75 |  |  | 478,643 |  |  | $ | 15.68 |
Granted |  | 137,151 |  |  | 3.99 |  |  | 169,835 |  |  | 8.56 |
Exercised |  | (68,071) |  |  | 17.48 |  |  | (83,862) |  |  | 17.93 |
Forfeited/expired |  | (117,296) |  |  | 11.36 |  |  | (38,406) |  |  | 26.07 |
Outstanding, end of period |  | 476,106 |  |  | $ | 8.78 |  |  | 526,210 |  |  | $ | 12.23 |
Units outstanding and exercisable, end of period |  | 491 |  |  | $ | 31.07 |  |  | 15,052 |  |  | $ | 11.41 |
Schedule of Share Based Compensation Arrangement by Share Based Payment Award Intrinsic Value | The aggregate intrinsic value of the Company’s share units at June 30, 2025 as follows:
|  | June 30, 2025
|  | (CDN $)
Share units: |  |
Outstanding |  | $ | 2,578 |
Exercisable |  | 15 |
Exercised |  | 285 |
Schedule of Employee Service Share-based Compensation, Allocation of Recognized Period Costs | Stock-based compensation associated with the Unit plans is included in operating expenses as follows:
|  | Three Months Ended June 30, |  | Six Months Ended June 30,
|  | 2025 |  | 2024 |  | 2025 |  | 2024
Cost of revenue |  | $ | — |  |  | $ | 36 |  |  | $ | — |  |  | $ | 77 |
Research and development |  | 15 |  |  | 53 |  |  | 28 |  |  | 163 |
General and administrative |  | 433 |  |  | 945 |  |  | 680 |  |  | 1,144 |
Sales and marketing |  | 3 |  |  | 49 |  |  | 28 |  |  | 108 |
|  | $ | 451 |  |  | $ | 1,083 |  |  | $ | 736 |  |  | $ | 1,492 |

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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 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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