Related party transactions - Transactions with Related Parties (Details) - USD ($) $ in Thousands |
12 Months Ended | ||
|---|---|---|---|
Sep. 26, 2016 |
Dec. 31, 2022 |
Dec. 31, 2021 |
|
| Synergy Ballard JVCo | |||
| Disclosure of transactions between related parties [line items] | |||
| Proportion of ownership interest in joint venture | 90.00% | 10.00% | 10.00% |
| Synergy Ballard JVCo | Joint venture | |||
| Disclosure of transactions between related parties [line items] | |||
| Trade and other receivables | $ 99 | $ 99 | |
| Investments | 0 | 0 | |
| Deferred revenue | 0 | 16 | |
| Revenues | $ 54 | $ 3,441 | |
| Weichai Ballard JV | |||
| Disclosure of transactions between related parties [line items] | |||
| Proportion of ownership interest in joint venture | 49.00% | 49.00% | |
| Weichai Ballard JV | Associates | |||
| Disclosure of transactions between related parties [line items] | |||
| Trade and other receivables | $ 13,320 | $ 10,794 | |
| Investments | 24,026 | 28,982 | |
| Deferred revenue | 2,095 | 2,730 | |
| Revenues | $ 8,115 | $ 35,239 | |