Commitments and Contingencies - Minimum Rental Commitments Less Imputed Interest (Details) $ in Thousands |
Sep. 30, 2019
USD ($)
|
|---|---|
| Lessee, Lease, Description [Line Items] | |
| Remainder of 2019 | $ 312 |
| 2020 | 1,262 |
| 2021 | 1,274 |
| 2022 | 1,206 |
| 2023 | 1,197 |
| Thereafter | 4,024 |
| Total | 9,275 |
| Less: imputed interest | (1,600) |
| Total operating lease liabilities | 7,675 |
| Ground Leases | |
| Lessee, Lease, Description [Line Items] | |
| Remainder of 2019 | 63 |
| 2020 | 253 |
| 2021 | 250 |
| 2022 | 166 |
| 2023 | 142 |
| Thereafter | 675 |
| Total | 1,549 |
| Less: imputed interest | (278) |
| Total operating lease liabilities | 1,271 |
| Office Leases | |
| Lessee, Lease, Description [Line Items] | |
| Remainder of 2019 | 249 |
| 2020 | 1,009 |
| 2021 | 1,024 |
| 2022 | 1,040 |
| 2023 | 1,055 |
| Thereafter | 3,349 |
| Total | 7,726 |
| Less: imputed interest | (1,322) |
| Total operating lease liabilities | $ 6,404 |