Goodwill - Additional Information (Detail) |
12 Months Ended |
|---|---|
Dec. 31, 2018 | |
| Goodwill and Intangible Assets Disclosure [Abstract] | |
| Percentage of fair value over carrying value, benchmark for qualitative impairment analysis | 94.60% |
| X | ||||||||||
- Definition Percentage of fair value over carrying value. No definition available.
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| X | ||||||||||
- References No definition available.
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