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Cash and cash equivalents
3 Months Ended
Mar. 31, 2020
Cash And Cash Equivalents [Abstract]  
Cash and cash equivalents

4. Cash and cash equivalents

 

 

 

As of December 31,

 

 

As of March 31,

 

 

 

2019

 

 

2020

 

 

 

 

 

 

 

 

 

 

Cash and other bank balances

 

 

467,096

 

 

 

401,624

 

Total

 

$

467,096

 

 

$

401,624