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Equity and dividends (Narrative) (Details) - USD ($) | 1 Months Ended | 3 Months Ended | 6 Months Ended
--- | --- | --- | ---
Aug. 03, 2022 | Jun. 30, 2022 | Jun. 30, 2021 | Jun. 30, 2022 | Jun. 30, 2021
Dividends Payable [Line Items] |  |  |  |  |
Preferred shares issued |  | 0 |  | 0 |
Shares forfeited |  |  |  |  | 55,510
Gain (Loss) from intra-entity foreign currency transactions |  | $ (8,553,000) | $ 1,095,000 | $ (9,437,000) | $ (2,559,000)
Shares issued for business combination [Member] |  |  |  |  |
Dividends Payable [Line Items] |  |  |  |  |
Share capital from additional paid-in capital |  | 1,819,000 |  | 1,819,000 |
Unrecognized share based continuing employment costs |  | $ 6,520,000 | $ 11,898,000 | $ 6,520,000 | $ 11,898,000
Unrecognized share based continuing employment costs, weighted average period for recognition |  |  |  | 1 year 4 months 24 days |
Subsequent Event [Member] |  |  |  |  |
Dividends Payable [Line Items] |  |  |  |  |
Dividends declared (USD per share) | $ 0.27 |  |  |  |
Dividends payable date | Sep. 14, 2022 |  |  |  |
Dividends, date of record | Aug. 24, 2022 |  |  |  |
Rouse Services LLC [Member] |  |  |  |  |
Dividends Payable [Line Items] |  |  |  |  |
Shares forfeited |  |  |  |  | 55,510

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