XML 36 R20.htm IDEA: XBRL DOCUMENT v3.8.0.1
Summary of Significant Accounting Policies (Tables)
12 Months Ended
Dec. 31, 2017
Summary of Significant Accounting Policies [Abstract]  
Schedule of estimated useful life
  Useful Life Estimated Residual Value
Office equipment and furnishing 3-5 years 5%
Leasehold improvements Shorter of the remaining lease terms or estimated useful lives -