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v3.20.4

Schedule of Debt (Parentheticals) (Details) - USD ($) $ in Thousands | 1 Months Ended | 12 Months Ended
--- | --- | ---
Feb. 28, 2021 | Jan. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
Debt Instrument [Line Items] |  |  |  |  |
Repayments of unsecured debt |  |  | $ 300,000 | $ 250,000 | $ 150,000
Term Loan [Member] |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Long-term Debt, Maturity Date |  |  | Jan. 05, 2022 |  |
Variable Rate Mortgage Loans [Member] | London Interbank Offered Rate (LIBOR) [Member] |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Long-term Debt, Maturity Date |  |  | Jun. 02, 2027 |  |
Variable Rate Mortgage Loans [Member] | Minimum [Member] | London Interbank Offered Rate (LIBOR) [Member] |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Debt instrument, effective fixed interest rate |  |  | 2.50% |  |
Variable Rate Mortgage Loans [Member] | Maximum [Member] | London Interbank Offered Rate (LIBOR) [Member] |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Debt instrument, effective fixed interest rate |  |  | 4.10% |  |
Line of Credit [Member] | Subsequent Event [Member] |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Line of credit facility, maximum borrowing capacity | $ 1,250,000 |  |  |  |
Long-term Debt, Maturity Date | Mar. 23, 2025 |  |  |  |
Line of Credit [Member] | London Interbank Offered Rate (LIBOR) [Member] |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Debt instrument basis spread on variable rate |  |  | 0.875% |  |
Line of Credit [Member] | London Interbank Offered Rate (LIBOR) [Member] | Subsequent Event [Member] |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Debt instrument basis spread on variable rate | 0.875% |  |  |  |
Unsecured Debt [Member] |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Long-term Debt, Maturity Date |  |  | Mar. 15, 2049 |  |
Unsecured Debt [Member] | Subsequent Event [Member] | Term Loan [Member] |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Repayments of unsecured debt |  | $ 265,000 |  |  |

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