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v3.21.1

Notes Payable and Unsecured Credit Facilities Schedule of maturities of long-term debt (Details) - USD ($) $ in Thousands | Mar. 31, 2021 | Dec. 31, 2020
--- | --- | ---
Debt Instrument [Line Items] |  |
2021 | $ 45,108 |
2022 | 17,237 |
2023 | 75,420 |
2024 | 345,591 |
2025 | 293,732 |
Beyond 5 Years | 2,906,552 |
Unamortized debt premium/(discount) and issuance costs | (31,398) |
Total | 3,652,242 | $ 3,923,084
Unsecured Debt [Member] |  |
Debt Instrument [Line Items] |  |
Total | 3,240,705 | $ 3,239,609
Scheduled Principal Payments [Member] | Mortgages [Member] |  |
Debt Instrument [Line Items] |  |
2021 | 8,504 |
2022 | 11,389 |
2023 | 9,695 |
2024 | 4,849 |
2025 | 3,732 |
Beyond 5 Years | 10,583 |
Unamortized debt premium/(discount) and issuance costs | 0 |
Total | 48,752 |
Mortgage Loan Maturities | Mortgages [Member] |  |
Debt Instrument [Line Items] |  |
2021 | 36,604 |
2022 | 5,848 |
2023 | 65,725 |
2024 | 90,742 |
2025 | 40,000 |
Beyond 5 Years | 120,969 |
Unamortized debt premium/(discount) and issuance costs | 2,897 |
Total | 362,785 |
Unsecured Maturities [Member] | Unsecured Debt [Member] |  |
Debt Instrument [Line Items] |  |
2021 | 0 |
2022 | 0 |
2023 | 0 |
2024 | 250,000 |
2025 | 250,000 |
Beyond 5 Years | 2,775,000 |
Unamortized debt premium/(discount) and issuance costs | (34,295) |
Total | $ 3,240,705 |

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