XML 98 R78.htm IDEA: XBRL DOCUMENT v3.20.4
Notes Payable and Unsecured Credit Facilities Schedule of maturities of long-term debt (Details) - USD ($)
$ in Thousands
Dec. 31, 2020
Dec. 31, 2019
Debt Instrument [Line Items]    
2021 $ 43,160  
2022 282,645  
2023 75,848  
2024 346,045  
2025 294,207  
Beyond 5 Years 2,913,808  
Unamortized debt discounts (premiums) (32,629)  
Long-term Debt 3,923,084 $ 3,919,544
Unsecured Debt [Member]    
Debt Instrument [Line Items]    
Long-term Debt 3,239,609 $ 2,944,752
Scheduled Principal Payments [Member] | Mortgages [Member]    
Debt Instrument [Line Items]    
2021 11,598  
2022 11,797  
2023 10,124  
2024 5,301  
2025 4,207  
Beyond 5 Years 17,505  
Unamortized debt discounts (premiums) 0  
Long-term Debt 60,532  
Mortgage Loan Maturities [Member] | Mortgages [Member]    
Debt Instrument [Line Items]    
2021 31,562  
2022 5,848  
2023 65,724  
2024 90,744  
2025 40,000  
Beyond 5 Years 121,303  
Unamortized debt discounts (premiums) 3,082  
Long-term Debt 358,263  
Unsecured Maturities [Member] | Unsecured Debt [Member]    
Debt Instrument [Line Items]    
2021 0  
2022 265,000  
2023 0  
2024 250,000  
2025 250,000  
Beyond 5 Years 2,775,000  
Unamortized debt discounts (premiums) (35,711)  
Long-term Debt $ 3,504,289