Related Party Transactions and Arrangements - Mortgage Loans Payable (Details) - Affiliated entity - Mortgage loans payable |
3 Months Ended | 6 Months Ended |
|---|---|---|
|
Jun. 30, 2018
USD ($)
Property
loan
|
Jun. 30, 2018
USD ($)
Property
loan
|
|
| Related Party Transaction [Line Items] | ||
| Number of mortgage loans with related party | loan | 4 | 4 |
| Outstanding principal of related parties notes payable | $ 29,400,000 | $ 29,400,000 |
| Interest expense on note payable | $ 24,500 | $ 24,500 |
| Weighted average contractual interest rate | 1.00% | 1.00% |
| Weighted average maturity | 9 years 5 months 10 days | |
| Commercial Real Estate | ||
| Related Party Transaction [Line Items] | ||
| Number of properties securing loans | Property | 6 | 6 |