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Cash and cash equivalents
12 Months Ended
Dec. 31, 2017
Cash and cash equivalents [Abstract]  
Cash and cash equivalents
4.
Cash and cash equivalents
 
Cash and cash equivalents represent cash on hand, cash held at bank, and time deposits placed with banks or other financial institutions, which have original maturities of three months or less. Cash on hand and cash held at bank balance as of December 31, 2016 and 2017 primarily consist of the following currencies:
 
 
 
December 31, 2016
 
December 31, 2017
 
(In thousands)
 
Amount
 
USD
equivalent
 
Amount
 
USD
equivalent
 
RMB
 
 
538,660
 
 
77,651
 
 
436,794
 
 
66,847
 
USD
 
 
121,726
 
 
121,726
 
 
166,530
 
 
166,530
 
HKD
 
 
987
 
 
127
 
 
794
 
 
102
 
Total
 
 
 
 
 
199,504
 
 
 
 
 
233,479
 
 
As at December 31, 2016 and 2017, included in the cash and cash equivalents are time deposits with original maturities of three months or less, of USD 115,944,000 and USD 115,534,000, primarily consist of USD.