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Investments - Financial Information of Weichai Ballard (Details) - USD ($) $ in Thousands | 12 Months Ended |
--- | --- | ---
Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
Disclosure of joint ventures [line items] |  |  |
Current assets | $ 1,028,507 | $ 1,229,186 |
Current liabilities | (73,168) | (83,159) |
Carrying amount of investment | 66,357 | 70,292 |
Net loss | 173,494 | 114,233 |
Corporate share of net loss | $ 11,617 | $ 16,140 |
Weichai Ballard JV |  |  |
Disclosure of joint ventures [line items] |  |  |
Proportion of ownership interest in joint venture | 49.00% | 49.00% |
Net assets | $ 27,895 | $ 33,320 |
Carrying amount of investment | 24,026 | 28,982 | $ 27,561
Corporate share of net loss | 11,599 | 16,084 |
Weichai Ballard JV | Weichai Ballard JV |  |  |
Disclosure of joint ventures [line items] |  |  |
Current assets | 80,088 | 104,907 |
Non-current assets | 2,618 | 2,339 |
Current liabilities | (23,460) | (36,385) |
Non-current liabilities | (2,314) | (2,861) |
Net assets | 56,932 | 68,000 |
Incorporation costs | 324 | 324 |
Elimination of unrealized profit on downstream sales, net of sale to third party | (4,193) | (4,662) |
Carrying amount of investment | 24,026 | 28,982 |
Revenue | 6,476 | 38,260 |
Net loss | 23,672 | 32,825 |
Corporate share of net loss | $ 11,599 | $ 16,084 |

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