Subsequent Events -Schedule of Rent Collections (Details) - COVID-19	Jan. 31, 2021	Dec. 31, 2020	Sep. 30, 2020
Core Portfolio | Second Quarter 2020
Subsequent Event [Line Items]
Percentage of rent collections		76.00%	74.00%
Core Portfolio | Third Quarter 2020
Subsequent Event [Line Items]
Percentage of rent collections		87.00%	85.00%
Core Portfolio | Fourth Quarter 2020
Subsequent Event [Line Items]
Percentage of rent collections		91.00%
Core Portfolio | Fourth Quarter 2020 | Subsequent Event
Subsequent Event [Line Items]
Percentage of rent collections	92.00%
Opportunity Funds | Second Quarter 2020
Subsequent Event [Line Items]
Percentage of rent collections		67.00%	65.00%
Opportunity Funds | Third Quarter 2020
Subsequent Event [Line Items]
Percentage of rent collections		79.00%	77.00%
Opportunity Funds | Fourth Quarter 2020
Subsequent Event [Line Items]
Percentage of rent collections		82.00%
Opportunity Funds | Fourth Quarter 2020 | Subsequent Event
Subsequent Event [Line Items]
Percentage of rent collections	84.00%