Quarterly report pursuant to Section 13 or 15(d)

Leasing Activity (Narrative) (Details)

v3.21.1
Leasing Activity (Narrative) (Details) - USD ($)
$ in Millions
3 Months Ended
Mar. 31, 2021
Mar. 31, 2020
Operating Leased Assets [Line Items]    
Rental income, variable lease payments $ 25.9 $ 24.6
Percentage of leased asset subjected to termination options 2.80%  
Percentage of leased asset exercisable in period 1.60%  
Termination option, exercisable through date Dec. 31, 2021  
Minimum [Member]    
Operating Leased Assets [Line Items]    
Non-cancelable lease term 1 year  
Maximum [Member]    
Operating Leased Assets [Line Items]    
Non-cancelable lease term 10 years