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Related parties (Schedule of Controlling Interests) (Details) - shares | Dec. 31, 2021 | Dec. 31, 2020 | Jan. 16, 2020
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Disclosure of classes of share capital [line items] |  |  |
Number of shares issued | 60,238,026 | 61,029,772 |
Percentage of voting equity interests acquired | 100.00% |  | 100.00%
James F. Park [Member] |  |  |
Disclosure of classes of share capital [line items] |  |  |
Number of shares issued | 8,414,255 |  |
Percentage of voting equity interests acquired | 13.97% |  |
Compass Group LLC [Member] |  |  |
Disclosure of classes of share capital [line items] |  |  |
Number of shares issued | 6,102,239 |  |
Percentage of voting equity interests acquired | 10.13% |  |
Gerald O'Shaughnessy [Member] |  |  |
Disclosure of classes of share capital [line items] |  |  |
Number of shares issued | 6,043,163 |  |
Percentage of voting equity interests acquired | 10.03% |  |
Renaissance Technologies LLC |  |  |
Disclosure of classes of share capital [line items] |  |  |
Number of shares issued | 3,538,931 |  |
Percentage of voting equity interests acquired | 5.87% |  |
Other shareholders [Member] |  |  |
Disclosure of classes of share capital [line items] |  |  |
Number of shares issued | 36,139,438 |  |
Percentage of voting equity interests acquired | 59.99% |  |

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