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v3.21.1

Shareholder's capital - Performance Stock Units (Detail) - Performance and restricted share units - CAD ($) $ / shares in Units, $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
Number of awards |  |  |
Beginning balance (in shares) | 2,412,043 | 1,392,132 |
Granted, including dividends (in shares) | 1,313,171 | 1,471,442 |
Exercised (in shares) | (968,470) | (344,340) |
Forfeited (in shares) | (35,537) | (107,191) |
Ending balance (in shares) | 2,721,207 | 2,412,043 | 1,392,132
Exercisable (in shares) | 707,630 |  |
Weighted average grant-date fair value |  |  |
Beginning balance (CAD per share) | $ 14.00 | $ 12.75 |
Granted, including dividends (CAD per share) | 19.31 | 14.69 |
Exercised (CAD per share) | 14.45 | 11.55 |
Forfeited (CAD per share) | 15.62 | 13.84 |
Ending balance (CAD per share) | 16.58 | $ 14.00 | $ 12.75
Exercisable (CAD per share) | $ 12.70 |  |
Additional Disclosures |  |  |
Outstanding, Weighted average remaining contractual term | 11 months 4 days | 1 year 10 months 9 days | 1 year 7 months 6 days
Granted, including dividends, Weighted average remaining contractual term | 2 years | 2 years |
Outstanding, aggregate intrinsic value | $ 44,289 | $ 44,309 | $ 19,114
Granted, including dividends, aggregate intrinsic value | 24,966 | 16,302 |
Exercised, aggregate intrinsic value | 20,105 | 5,148 |
Forfeited, aggregate intrinsic value | 745 | $ 0 |
Exercisable, aggregate intrinsic value | $ 14,825 |  |

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