Organization - Narrative (Details) - USD ($) $ in Thousands |
3 Months Ended | |
|---|---|---|
Mar. 31, 2018 |
Mar. 31, 2017 |
|
| Subsidiary of Limited Liability Company or Limited Partnership [Line Items] | ||
| Transaction costs | $ 3,932 | $ 0 |
| General Partner | ||
| Subsidiary of Limited Liability Company or Limited Partnership [Line Items] | ||
| Ownership of operating partnership | 1.00% | |
| Limited Partner | ||
| Subsidiary of Limited Liability Company or Limited Partnership [Line Items] | ||
| Ownership of operating partnership | 99.00% | |