Summary of Significant Accounting Policies - Property and Equipment (Details) |
12 Months Ended |
|---|---|
Dec. 31, 2019 | |
| Buildings | Minimum | |
| PROPERTY AND EQUIPMENT | |
| Estimated Useful Lives | 10 years |
| Buildings | Maximum | |
| PROPERTY AND EQUIPMENT | |
| Estimated Useful Lives | 50 years |
| Equipment | Minimum | |
| PROPERTY AND EQUIPMENT | |
| Estimated Useful Lives | 3 years |
| Equipment | Maximum | |
| PROPERTY AND EQUIPMENT | |
| Estimated Useful Lives | 20 years |