Debt - CMBS - Narrative (Details) $ in Thousands |
Jun. 30, 2019
USD ($)
Property
loan
|
Dec. 31, 2018
USD ($)
|
|---|---|---|
| Debt Instrument [Line Items] | ||
| Unamortized deferred financing costs | $ 17,681 | $ 14,932 |
| Weighted Average | ||
| Debt Instrument [Line Items] | ||
| Stated interest rate | 3.96% | |
| CMBS | ||
| Debt Instrument [Line Items] | ||
| Number of loans secured by mortgage on leased properties and related assets | loan | 6 | |
| Number of properties securing borrowings | Property | 100 | |
| Unamortized deferred financing costs | $ 2,900 | 3,200 |
| Unamortized premium | $ 100 | $ 100 |
| CMBS | Weighted Average | ||
| Debt Instrument [Line Items] | ||
| Stated interest rate | 5.35% | |
| CMBS | Minimum | ||
| Debt Instrument [Line Items] | ||
| Stated interest rate | 4.67% | |
| CMBS | Maximum | ||
| Debt Instrument [Line Items] | ||
| Stated interest rate | 6.00% |