v3.21.1

Corporate debt, Repayment schedule (Details) - USD ($) $ in Thousands | Mar. 31, 2021 | Dec. 31, 2020
--- | --- | ---
Repayment schedule [Abstract] |  |
Corporate debt | $ 965,320 | $ 993,725
Remainder of 2021 [Member] |  |
Repayment schedule [Abstract] |  |
Corporate debt | 25,626 |
Between January and March 2022 [Member] |  |
Repayment schedule [Abstract] |  |
Corporate debt | 0 |
Between April and December 2022 [Member] |  |
Repayment schedule [Abstract] |  |
Corporate debt | 0 |
2021 [Member] |  |
Repayment schedule [Abstract] |  |
Corporate debt |  | 23,648
2022 [Member] |  |
Repayment schedule [Abstract] |  |
Corporate debt |  | 0
2023 [Member] |  |
Repayment schedule [Abstract] |  |
Corporate debt | 1,962 | 2,036
2024 [Member] |  |
Repayment schedule [Abstract] |  |
Corporate debt | 1,962 | 2,036
2025 [member] |  |
Repayment schedule [Abstract] |  |
Corporate debt | 436,476 | 448,133
Subsequent Years [Member] |  |
Repayment schedule [Abstract] |  |
Corporate debt | 499,294 | 517,872
2017 Credit Facility [Member] |  |
Repayment schedule [Abstract] |  |
Corporate debt | 20 | 41
2017 Credit Facility [Member] | Remainder of 2021 [Member] |  |
Repayment schedule [Abstract] |  |
Corporate debt | 20 |
2017 Credit Facility [Member] | Between January and March 2022 [Member] |  |
Repayment schedule [Abstract] |  |
Corporate debt | 0 |
2017 Credit Facility [Member] | Between April and December 2022 [Member] |  |
Repayment schedule [Abstract] |  |
Corporate debt | 0 |
2017 Credit Facility [Member] | 2021 [Member] |  |
Repayment schedule [Abstract] |  |
Corporate debt |  | 41
2017 Credit Facility [Member] | 2022 [Member] |  |
Repayment schedule [Abstract] |  |
Corporate debt |  | 0
2017 Credit Facility [Member] | 2023 [Member] |  |
Repayment schedule [Abstract] |  |
Corporate debt | 0 | 0
2017 Credit Facility [Member] | 2024 [Member] |  |
Repayment schedule [Abstract] |  |
Corporate debt | 0 | 0
2017 Credit Facility [Member] | 2025 [member] |  |
Repayment schedule [Abstract] |  |
Corporate debt | 0 | 0
2017 Credit Facility [Member] | Subsequent Years [Member] |  |
Repayment schedule [Abstract] |  |
Corporate debt | 0 | 0
Note Issuance Facility 2019 [Member] |  |
Repayment schedule [Abstract] |  |
Corporate debt | 331,885 | 343,999
Note Issuance Facility 2019 [Member] | Remainder of 2021 [Member] |  |
Repayment schedule [Abstract] |  |
Corporate debt | 0 |
Note Issuance Facility 2019 [Member] | Between January and March 2022 [Member] |  |
Repayment schedule [Abstract] |  |
Corporate debt | 0 |
Note Issuance Facility 2019 [Member] | Between April and December 2022 [Member] |  |
Repayment schedule [Abstract] |  |
Corporate debt | 0 |
Note Issuance Facility 2019 [Member] | 2021 [Member] |  |
Repayment schedule [Abstract] |  |
Corporate debt |  | 0
Note Issuance Facility 2019 [Member] | 2022 [Member] |  |
Repayment schedule [Abstract] |  |
Corporate debt |  | 0
Note Issuance Facility 2019 [Member] | 2023 [Member] |  |
Repayment schedule [Abstract] |  |
Corporate debt | 0 | 0
Note Issuance Facility 2019 [Member] | 2024 [Member] |  |
Repayment schedule [Abstract] |  |
Corporate debt | 0 | 0
Note Issuance Facility 2019 [Member] | 2025 [member] |  |
Repayment schedule [Abstract] |  |
Corporate debt | 331,885 | 343,999
Note Issuance Facility 2019 [Member] | Subsequent Years [Member] |  |
Repayment schedule [Abstract] |  |
Corporate debt | 0 | 0
Commercial Paper [Member] |  |
Repayment schedule [Abstract] |  |
Corporate debt | 24,358 | 21,224
Commercial Paper [Member] | Remainder of 2021 [Member] |  |
Repayment schedule [Abstract] |  |
Corporate debt | 24,358 |
Commercial Paper [Member] | Between January and March 2022 [Member] |  |
Repayment schedule [Abstract] |  |
Corporate debt | 0 |
Commercial Paper [Member] | Between April and December 2022 [Member] |  |
Repayment schedule [Abstract] |  |
Corporate debt | 0 |
Commercial Paper [Member] | 2021 [Member] |  |
Repayment schedule [Abstract] |  |
Corporate debt |  | 21,224
Commercial Paper [Member] | 2022 [Member] |  |
Repayment schedule [Abstract] |  |
Corporate debt |  | 0
Commercial Paper [Member] | 2023 [Member] |  |
Repayment schedule [Abstract] |  |
Corporate debt | 0 | 0
Commercial Paper [Member] | 2024 [Member] |  |
Repayment schedule [Abstract] |  |
Corporate debt | 0 | 0
Commercial Paper [Member] | 2025 [member] |  |
Repayment schedule [Abstract] |  |
Corporate debt | 0 | 0
Commercial Paper [Member] | Subsequent Years [Member] |  |
Repayment schedule [Abstract] |  |
Corporate debt |  | 0
2020 Green Private Placement [Member] |  |
Repayment schedule [Abstract] |  |
Corporate debt | 338,635 | 351,315
2020 Green Private Placement [Member] | Remainder of 2021 [Member] |  |
Repayment schedule [Abstract] |  |
Corporate debt | 279 |
2020 Green Private Placement [Member] | Between January and March 2022 [Member] |  |
Repayment schedule [Abstract] |  |
Corporate debt | 0 |
2020 Green Private Placement [Member] | Between April and December 2022 [Member] |  |
Repayment schedule [Abstract] |  |
Corporate debt | 0 |
2020 Green Private Placement [Member] | 2021 [Member] |  |
Repayment schedule [Abstract] |  |
Corporate debt |  | 289
2020 Green Private Placement [Member] | 2022 [Member] |  |
Repayment schedule [Abstract] |  |
Corporate debt |  | 0
2020 Green Private Placement [Member] | 2023 [Member] |  |
Repayment schedule [Abstract] |  |
Corporate debt | 0 | 0
2020 Green Private Placement [Member] | 2024 [Member] |  |
Repayment schedule [Abstract] |  |
Corporate debt | 0 | 0
2020 Green Private Placement [Member] | 2025 [member] |  |
Repayment schedule [Abstract] |  |
Corporate debt | 0 | 0
2020 Green Private Placement [Member] | Subsequent Years [Member] |  |
Repayment schedule [Abstract] |  |
Corporate debt | 338,356 | 351,026
Note Issuance Facility 2020 [Member] |  |
Repayment schedule [Abstract] |  |
Corporate debt | 160,938 | 166,846
Note Issuance Facility 2020 [Member] | Remainder of 2021 [Member] |  |
Repayment schedule [Abstract] |  |
Corporate debt | 0 |
Note Issuance Facility 2020 [Member] | Between January and March 2022 [Member] |  |
Repayment schedule [Abstract] |  |
Corporate debt | 0 |
Note Issuance Facility 2020 [Member] | Between April and December 2022 [Member] |  |
Repayment schedule [Abstract] |  |
Corporate debt | 0 |
Note Issuance Facility 2020 [Member] | 2021 [Member] |  |
Repayment schedule [Abstract] |  |
Corporate debt |  | 0
Note Issuance Facility 2020 [Member] | 2022 [Member] |  |
Repayment schedule [Abstract] |  |
Corporate debt |  | 0
Note Issuance Facility 2020 [Member] | 2023 [Member] |  |
Repayment schedule [Abstract] |  |
Corporate debt | 0 | 0
Note Issuance Facility 2020 [Member] | 2024 [Member] |  |
Repayment schedule [Abstract] |  |
Corporate debt | 0 | 0
Note Issuance Facility 2020 [Member] | 2025 [member] |  |
Repayment schedule [Abstract] |  |
Corporate debt | 0 | 0
Note Issuance Facility 2020 [Member] | Subsequent Years [Member] |  |
Repayment schedule [Abstract] |  |
Corporate debt | 160,938 | 166,846
Green Exchangeable Notes [Member] |  |
Repayment schedule [Abstract] |  |
Corporate debt | 103,630 | 104,227
Green Exchangeable Notes [Member] | Remainder of 2021 [Member] |  |
Repayment schedule [Abstract] |  |
Corporate debt | 959 |
Green Exchangeable Notes [Member] | Between January and March 2022 [Member] |  |
Repayment schedule [Abstract] |  |
Corporate debt | 0 |
Green Exchangeable Notes [Member] | Between April and December 2022 [Member] |  |
Repayment schedule [Abstract] |  |
Corporate debt | 0 |
Green Exchangeable Notes [Member] | 2021 [Member] |  |
Repayment schedule [Abstract] |  |
Corporate debt |  | 2,083
Green Exchangeable Notes [Member] | 2022 [Member] |  |
Repayment schedule [Abstract] |  |
Corporate debt |  | 0
Green Exchangeable Notes [Member] | 2023 [Member] |  |
Repayment schedule [Abstract] |  |
Corporate debt | 0 | 0
Green Exchangeable Notes [Member] | 2024 [Member] |  |
Repayment schedule [Abstract] |  |
Corporate debt | 0 | 0
Green Exchangeable Notes [Member] | 2025 [member] |  |
Repayment schedule [Abstract] |  |
Corporate debt | 102,671 | 102,144
Green Exchangeable Notes [Member] | Subsequent Years [Member] |  |
Repayment schedule [Abstract] |  |
Corporate debt | 0 | 0
2020 Credit Facility [Member] |  |
Repayment schedule [Abstract] |  |
Corporate debt | 5,854 | 6,073
2020 Credit Facility [Member] | Remainder of 2021 [Member] |  |
Repayment schedule [Abstract] |  |
Corporate debt | 10 |
2020 Credit Facility [Member] | Between January and March 2022 [Member] |  |
Repayment schedule [Abstract] |  |
Corporate debt | 0 |
2020 Credit Facility [Member] | Between April and December 2022 [Member] |  |
Repayment schedule [Abstract] |  |
Corporate debt | 0 |
2020 Credit Facility [Member] | 2021 [Member] |  |
Repayment schedule [Abstract] |  |
Corporate debt |  | 11
2020 Credit Facility [Member] | 2022 [Member] |  |
Repayment schedule [Abstract] |  |
Corporate debt |  | 0
2020 Credit Facility [Member] | 2023 [Member] |  |
Repayment schedule [Abstract] |  |
Corporate debt | 1,962 | 2,036
2020 Credit Facility [Member] | 2024 [Member] |  |
Repayment schedule [Abstract] |  |
Corporate debt | 1,962 | 2,036
2020 Credit Facility [Member] | 2025 [member] |  |
Repayment schedule [Abstract] |  |
Corporate debt | 1,920 | 1,990
2020 Credit Facility [Member] | Subsequent Years [Member] |  |
Repayment schedule [Abstract] |  |
Corporate debt | $ 0 | $ 0

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