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Property, Plant and Equipment, Net - Summary of Property, Plant and Equipment, Net (Parenthetical) (Detail) - Leasehold Improvements [Member]
3 Months Ended
Mar. 31, 2018
Minimum [Member]  
Property, Plant and Equipment [Line Items]  
Capitalized land lease estimated useful lives maximum 30 years
Maximum [Member]  
Property, Plant and Equipment [Line Items]  
Capitalized land lease estimated useful lives maximum 99 years