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Share Capital - Common Shares Outstanding (Details) - shares |  | 12 Months Ended
--- | --- | ---
Feb. 12, 2019 | Jan. 31, 2022 | Jan. 31, 2021 | Jan. 31, 2020
Balance, beginning of year (in shares) |  | 84,494,000 | 84,156,000 | 76,865,000
Stock options and share units exercised (in shares) |  | 262,000 | 338,000 | 95,000
Issuance of common shares (in shares) |  |  |  | 6,900,000
Balance, end of year (in shares) |  | 84,756,210 | 84,494,000 | 84,156,000
Visual Compliance [Member] |  |  |  |
Acquisitions (Note 3) (in shares) | 300,000 |  |  | 296,000

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