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Investments - Schedule of investments (Details) - USD ($) $ in Thousands |  |  | 1 Months Ended | 12 Months Ended
--- | --- | --- | --- | ---
Nov. 13, 2018 | Sep. 26, 2016 | Oct. 31, 2021 | Dec. 31, 2021 | Dec. 31, 2020
Disclosure of joint ventures [line items] |  |  |  |  |
Investments, beginning balance |  |  |  | $ 27,566 |
Capital contribution to JV |  |  |  | 12,351 | $ 22,515
Equity in loss of investment in joint venture and associates |  |  |  | (16,140) | (12,557)
Cumulative translation adjustment due to foreign exchange |  |  |  | (1,336) | 4,875
Investments, ending balance |  |  |  | 70,292 | 27,566
Weichai Ballard JV |  |  |  |  |
Disclosure of joint ventures [line items] |  |  |  |  |
Investments, beginning balance |  |  |  | 27,561 | 21,642
Capital contribution to JV |  |  |  | 12,351 | 22,515
Recognition (deferral) of 49% profit on inventory not yet sold to third party, net |  |  |  | 3,909 | (5,759)
Equity in loss of investment in joint venture and associates |  |  |  | (16,084) | (12,495)
Cumulative translation adjustment due to foreign exchange |  |  |  | 1,245 | 1,658
Investments, ending balance |  |  |  | $ 28,982 | $ 27,561
Proportion of ownership interest in joint venture | 49.00% |  |  | 49.00% | 49.00%
Forsee Power |  |  |  |  |
Disclosure of joint ventures [line items] |  |  |  |  |
Investments, beginning balance |  |  |  | $ 0 |
Investments, ending balance |  |  |  | 33,335 | $ 0
Proportion of ownership interest in joint venture |  |  | 9.77% |  |
HyCap Fund |  |  |  |  |
Disclosure of joint ventures [line items] |  |  |  |  |
Investments, beginning balance |  |  |  | 0 |
Investments, ending balance |  |  |  | 7,636 | 0
CleanH2 Fund |  |  |  |  |
Disclosure of joint ventures [line items] |  |  |  |  |
Investments, beginning balance |  |  |  | 0 |
Investments, ending balance |  |  |  | 339 | 0
Synergy Ballard JVCo |  |  |  |  |
Disclosure of joint ventures [line items] |  |  |  |  |
Investments, beginning balance |  |  |  | 0 | 0
Recognition (deferral) of 49% profit on inventory not yet sold to third party, net |  |  |  | 56 | 62
Equity in loss of investment in joint venture and associates |  |  |  | (56) | (62)
Investments, ending balance |  |  |  | $ 0 | $ 0
Proportion of ownership interest in joint venture |  | 10.00% |  | 10.00% | 10.00%
Other |  |  |  |  |
Disclosure of joint ventures [line items] |  |  |  |  |
Investments, beginning balance |  |  |  | $ 5 |
Investments, ending balance |  |  |  | $ 0 | $ 5

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- Definition The amount of exchange differences recognised in profit or loss that arise from foreign currency transactions, excluding those arising on financial instruments measured at fair value through profit or loss in accordance with IFRS 9. [Refer: At fair value [member]; Financial instruments, class [member]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 21 -IssueDate 2021-01-01 -Paragraph 52 -Subparagraph a -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=21&code=ifrs-tx-2021-en-r&anchor=para_52_a&doctype=Standard -URIDate 2021-03-24 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 1 -IssueDate 2021-01-01 -Paragraph 35 -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2021-en-r&anchor=para_35&doctype=Standard -URIDate 2021-03-24 + Details
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- Definition The amount of investments accounted for using the equity method. The equity method is a method of accounting whereby the investment is initially recognised at cost and adjusted thereafter for the post-acquisition change in the investor's share of net assets of the investee. The investor's profit or loss includes its share of the profit or loss of the investee. The investor's other comprehensive income includes its share of the other comprehensive income of the investee. [Refer: At cost [member]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 8 -IssueDate 2021-01-01 -Paragraph 24 -Subparagraph a -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=8&code=ifrs-tx-2021-en-r&anchor=para_24_a&doctype=Standard -URIDate 2021-03-24 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 12 -IssueDate 2021-01-01 -Paragraph B16 -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=12&code=ifrs-tx-2021-en-r&anchor=para_B16&doctype=Appendix&subtype=B -URIDate 2021-03-24 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 1 -IssueDate 2021-01-01 -Paragraph 54 -Subparagraph e -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2021-en-r&anchor=para_54_e&doctype=Standard -URIDate 2021-03-24 + Details
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