v3.20.4

Other information (Details) $ / shares in Units, $ in Thousands |  |  |  |  |  | 12 Months Ended |  |  |  |
--- | --- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Feb. 26, 2021 $ / shares | Jan. 31, 2021 USD ($) | Jan. 07, 2021 USD ($) shares | Jan. 06, 2021 USD ($) MW | Dec. 11, 2020 USD ($) | Dec. 31, 2020 USD ($) | Sep. 30, 2021 | Dec. 31, 2019 USD ($) | Dec. 31, 2018 USD ($) | Nov. 27, 2018
Restricted Net Assets [Abstract] |  |  |  |  |  |  |  |  |  |
Restricted net assets |  |  |  |  |  | $ 324,000 |  |  |  |
Subsequent Events [Abstract] |  |  |  |  |  |  |  |  |  |
Investments accounted for using equity method |  |  |  |  |  | 116,614 |  | $ 139,925 | $ 53,419 |
Proceeds from issuing shares |  |  |  |  | $ 167,000 |  |  |  |  |
Subsequent Events [Member] |  |  |  |  |  |  |  |  |  |
Subsequent Events [Abstract] |  |  |  |  |  |  |  |  |  |
Dividend declaration date | Feb. 26, 2021 |  |  |  |  |  |  |  |  |
Dividend approved (in dollars per share) | $ / shares | $ 0.42 |  |  |  |  |  |  |  |  |
Dividend approved expected date to be paid | Mar. 22, 2021 |  |  |  |  |  |  |  |  |
Renewable Energy [Member] |  |  |  |  |  |  |  |  |  |
Subsequent Events [Abstract] |  |  |  |  |  |  |  |  |  |
Investments accounted for using equity method |  |  |  |  |  | $ 61,866 |  | $ 77,549 |  |
Algonquin [Member] |  |  |  |  |  |  |  |  |  |
Subsequent Events [Abstract] |  |  |  |  |  |  |  |  |  |
Proceeds from issuing shares |  |  |  |  | $ 133,000 |  |  |  |  |
Ownership percentage acquired |  |  |  |  |  |  |  |  |  | 16.47%
Algonquin [Member] | Subsequent Events [Member] |  |  |  |  |  |  |  |  |  |
Subsequent Events [Abstract] |  |  |  |  |  |  |  |  |  |
Number of ordinary shares sold in private placement (in shares) | shares |  |  | 4,020,860 |  |  |  |  |  |  |
Ownership interest |  |  | 44.20% |  |  |  |  |  |  |
Proceeds from issuing shares |  |  | $ 133,000 |  |  |  |  |  |  |
Chile PV2 [Member] | Renewable Energy [Member] | Subsequent Events [Member] |  |  |  |  |  |  |  |  |  |
Subsequent Events [Abstract] |  |  |  |  |  |  |  |  |  |
Installed capacity | MW |  |  |  | 40 |  |  |  |  |  |
Investments accounted for using equity method |  |  |  | $ 5,000 |  |  |  |  |  |
Rioglass [Member] |  |  |  |  |  |  |  |  |  |
Subsequent Events [Abstract] |  |  |  |  |  |  |  |  |  |
Ownership interest |  |  |  |  |  | 15.00% |  |  |  |
Rioglass [Member] | Forecast [Member] |  |  |  |  |  |  |  |  |  |
Subsequent Events [Abstract] |  |  |  |  |  |  |  |  |  |
Ownership interest |  | 100.00% |  |  |  |  |  |  |  |
Ownership percentage acquired |  |  |  |  |  |  | 42.50% |  |  |
Sale of ownership, percentage |  |  |  |  |  |  | 42.50% |  |  |
Rioglass [Member] | Subsequent Events [Member] |  |  |  |  |  |  |  |  |  |
Subsequent Events [Abstract] |  |  |  |  |  |  |  |  |  |
Investments accounted for using equity method |  | $ 7,000 |  |  |  | $ 7,000 |  |  |  |
Ownership percentage acquired |  | 42.50% |  |  |  |  |  |  |  |

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