XML 30 R13.htm IDEA: XBRL DOCUMENT v3.22.1
Intangible Assets, Net
 12 Months Ended
Dec. 31, 2021
Goodwill and Intangible Assets Disclosure [Abstract]  
Intangible assets
6
Intangible assets, net
Intangible assets consist of the following:
 
     As of December 31,  
     2020      2021  
     RMB      RMB      US$  
Acquired computer software, systems and technology

      15,693        13,623        2,138  
Less: Accumulated amortization
      (6,174 )       (8,225 )       (1,291 ) 
    
 
 
     
 
 
     
 
 
  
Total intangible assets, net
      9,519        5,398        847  
    
 
 
     
 
 
     
 
 
  
No impairment charges were recognized on intangible assets for the years ended December 31, 2019, 2020 and 2021, respectively.
The weighted average amortization period of intangible assets were 4.2 years, 3.9 years and 4.0 years for the years ended December 31, 2019, 2020 and 2021, respectively.
Amortization expense of intangible assets were RMB2,307, RMB4,366 and, RMB4,481 (US$703) for the years ended December 31, 2019, 2020 and 2021, respectively.
Estimated amortization expense relating to the existing intangible assets with finite lives for each of the next five years is as follows:
 
     RMB      US$  
For the year ending December 31, 2022
      2,782        437  
2023
      2,080        326  
2024
      522        82  
2025
      14        2  
2026
      —          —    
There were no intangible assets with an indefinite useful life as of December 31, 2020 and 2021.