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Consolidated Statements Of Comprehensive Income (Parenthetical) | 12 Months Ended
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Dec. 31, 2017 | Dec. 31, 2016 | Dec. 31, 2015
Class A Ordinary Shares |  |  |
Number of American depositary shares (ADSs) representing one Class A ordinary share | 10 | 10 | 10

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- Definition The number of American Depositary Shares ("ADSs") that represents one Class A ordinary share. + References No definition available. + Details
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Balance Type: | na
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- Details
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Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |