Leases - Supplemental Cash Flow (Details) - USD ($) $ in Thousands |
12 Months Ended | |
|---|---|---|
Dec. 31, 2020 |
Dec. 31, 2019 |
|
| Lessee, Lease, Description [Line Items] | ||
| Operating Lease, Payments | $ 6,285 | $ 15,897 |
| Operating Lease, Payments, Use | 1,832 | 17,984 |
| Right-of-Use Asset Obtained In (Derecognized From) Exchange For Operating Lease Liability | $ (3,843) | $ 34,833 |