Capital Management - Additional Information (Detail) $ in Millions |
12 Months Ended |
|---|---|
|
Dec. 31, 2019
USD ($)
| |
| Text block [abstract] | |
| Minimum Market Value | $ 35 |
| X | ||||||||||
- Definition Minimum Market Value No definition available.
|
| X | ||||||||||
- Definition Text block [abstract] No definition available.
|