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40-F
EX-99.1
EX-99.2
EX-99.3
EX-99.4
EX-99.5
EX-99.6
EX-99.7
EX-99.8
Operating Segment Information - Additional Information (Detail) - Segment
12 Months Ended
Dec. 31, 2017
Dec. 31, 2016
Disclosure of operating segments [abstract]
Number of operating segments
2
2