Related Party Transactions - Property Management and Servicing Agreement (Details) - USD ($) $ in Thousands |
12 Months Ended | |||
|---|---|---|---|---|
May 20, 2014 |
Dec. 31, 2018 |
Dec. 31, 2017 |
Dec. 31, 2016 |
|
| Related Party Transaction [Line Items] | ||||
| Related party fee income | $ 15,838 | $ 0 | $ 0 | |
| Affiliated Entity | Property management | ||||
| Related Party Transaction [Line Items] | ||||
| Annual management fees rate | 0.25% | |||
| Related party fee income | 3,700 | |||
| Affiliated Entity | Special servicing fees | ||||
| Related Party Transaction [Line Items] | ||||
| Annual management fees rate | 0.75% | |||
| Related party fee income | 500 | |||
| Affiliated Entity | Property Management and Servicing Agreement | ||||
| Related Party Transaction [Line Items] | ||||
| Due from related parties | $ 500 | |||