Leases - Quantitative information Finance lease (Details) $ in Thousands |
12 Months Ended |
|---|---|
|
Dec. 31, 2019
USD ($)
| |
| Lessee, Lease, Description [Line Items] | |
| Weighted average discount rate for finance leases | 5.79% |
| Monthly principal, interest and sales tax payments | $ 40 |
| Finance Lease, Weighted Average Remaining Lease Term | 2 years 4 days |
| Minimum | |
| Lessee, Lease, Description [Line Items] | |
| Lessee, Finance Lease, Discount Rate | 1.58% |
| Maximum | |
| Lessee, Lease, Description [Line Items] | |
| Lessee, Finance Lease, Discount Rate | 5.95% |