Employee Benefits and Share-Based Compensation - Pension Benefits Expected to be Paid (Details) $ in Thousands |
Dec. 31, 2019
USD ($)
|
|---|---|
| Disclosure of Compensation Related Costs, Share-based Payments [Abstract] | |
| 2020 | $ 922 |
| 2021 | 949 |
| 2022 | 1,045 |
| 2023 | 1,208 |
| 2024 | 1,340 |
| Next five years | $ 10,585 |