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Related party transactions (Tables)
 12 Months Ended
Dec. 31, 2023
Related Party [Abstract]  
Schedule of Transactions Between Related Parties
For the year ended December 31, 2023 and 2022, related party transactions and balances with the Corporation's 49% owned equity accounted investee, Weichai Ballard JV, were as follows:
Balances with related party - Weichai Ballard JV20232022
Trade and other receivables$13,697 $13,320 
Investments13,901 24,026 
Deferred revenue1,904 2,095 
Transactions during the year with related party - Weichai Ballard JV20232022
Revenues$8,099 $8,115 
Cost of goods sold and operating expense1,996 3,225 
Key management personnel compensation is comprised of:
20232022
Salaries and employee benefits$3,817 $3,416 
Post-employment retirement benefits65 61 
Termination benefits— 247 
Share-based compensation (note 21)2,622 1,793 
$6,504 $5,517