Credit Risk Concentrations - Additional Information (Detail) - customer |
3 Months Ended | 6 Months Ended | 12 Months Ended | ||
|---|---|---|---|---|---|
Jun. 30, 2020 |
Jun. 30, 2019 |
Jun. 30, 2020 |
Jun. 30, 2019 |
Dec. 31, 2019 |
|
| Concentration Risk [Line Items] | |||||
| Number of tenants or common franchises | 0 | 0 | 0 | 0 | |
| Operating Expenses | Management Contracts Concentration Risk | |||||
| Concentration Risk [Line Items] | |||||
| Concentrations risk percentage | 0.00% | 19.00% | 4.00% | 19.00% | |
| Mortgages and Notes Payable | Credit Availability Concentration Risk | Financial Institution One | |||||
| Concentration Risk [Line Items] | |||||
| Concentrations risk percentage | 62.00% | 62.00% | |||
| Mortgages and Notes Payable | Credit Availability Concentration Risk | Financial Institution Two | |||||
| Concentration Risk [Line Items] | |||||
| Concentrations risk percentage | 16.00% | 16.00% | |||
| Mortgages and Notes Payable | Credit Availability Concentration Risk | Financial Institution Three | |||||
| Concentration Risk [Line Items] | |||||
| Concentrations risk percentage | 10.00% | 10.00% | |||