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Related Party Transactions and Balances - Additional Information (Details)
$ in Thousands
1 Months Ended 12 Months Ended
Jun. 30, 2019
USD ($)
Jun. 30, 2019
CNY (¥)
Jan. 01, 2019
Sep. 20, 2019
USD ($)
Sep. 20, 2019
CNY (¥)
Jun. 30, 2019
USD ($)
Jun. 30, 2019
CNY (¥)
Apr. 08, 2013
Dec. 31, 2012
USD ($)
Dec. 31, 2012
CNY (¥)
Sep. 30, 2010
USD ($)
Sep. 30, 2010
CNY (¥)
Aug. 12, 2010
USD ($)
Aug. 12, 2010
CNY (¥)
Jun. 30, 2007
USD ($)
Jun. 30, 2007
CNY (¥)
Aug. 12, 2004
CNY (¥)
Dec. 31, 2021
USD ($)
Loan
Dec. 31, 2020
USD ($)
Dec. 31, 2019
USD ($)
Dec. 31, 2019
CNY (¥)
Dec. 31, 2004
USD ($)
Agreement
Dec. 31, 2019
CNY (¥)
Related Party Transaction [Line Items]                                              
Due to related parties                                   $ 6,290 $ 12,285        
Proceeds from related party debt                                   7,119 10,162 $ 1,457      
Interest expense, related party                                   $ 916 663 455      
Dalian Jin Gang Group                                              
Related Party Transaction [Line Items]                                              
Number of loans due to related party | Loan                                   2          
Interest expense, related party                                   $ 916 663 455      
Frequency of periodic payment of interest                                   monthly          
Interest owed on loan from noncontrolling shareholder                                   $ 13 25        
Interest paid to noncontrolling shareholder                                   929 $ 640 470      
Related party transaction, lease term     5 years                                        
Related party transaction, operating lease annual rent                                       49     ¥ 300,000
Related party transaction, current and non-current lease liability                                   7,095          
Dalian Jin Gang Group | Operating Lease Agreement After Amendment                                              
Related Party Transaction [Line Items]                                              
Related party transaction, operating lease annual rent           $ 22 ¥ 200,000                                
Related party transaction, lease term           5 years 6 months 5 years 6 months                                
Dalian Jin Gang Group | Management Service Agreement                                              
Related Party Transaction [Line Items]                                              
Related party transaction, annual management fee                                       $ 14 ¥ 100,000    
Dalian Jin Gang Group | Management Service Agreement Amended                                              
Related Party Transaction [Line Items]                                              
Related party transaction, annual management fee $ 7 ¥ 44,000                                          
Sino Bioway Biotech Group Holding Limited                                              
Related Party Transaction [Line Items]                                              
Related party transaction number of supplemental agreements with related party               4                              
Related party transaction operating leases number of lease agreements amended               4                              
Related party transaction, operating lease annual rent                                   7,477          
Sino Bioway Biotech Group Holding Limited | Operating Lease Agreements Production Plant And Laboratory                                              
Related Party Transaction [Line Items]                                              
Number of operating lease agreements | Agreement                                           2  
Related party transaction, operating lease annual rent                                 ¥ 1,400,000         $ 197  
Related party transaction, lease term                                 20 years            
Sino Bioway Biotech Group Holding Limited | Operating Lease Agreement After Amendment Production Plant And Laboratory                                              
Related Party Transaction [Line Items]                                              
Related party transaction, operating lease annual rent                         $ 197 ¥ 1,400,000                  
Sino Bioway Biotech Group Holding Limited | Operating Lease Agreement Before Amendment Production Plant And Laboratory                                              
Related Party Transaction [Line Items]                                              
Related party transaction, operating lease annual rent                         $ 75 ¥ 500,000                  
Sino Bioway Biotech Group Holding Limited | Operating Lease Agreement Expansion Of Production Plant                                              
Related Party Transaction [Line Items]                                              
Related party transaction, operating lease annual rent                             $ 296                
Sino Bioway Biotech Group Holding Limited | Operating Lease Agreement Expansion Of Research And Development Business                                              
Related Party Transaction [Line Items]                                              
Related party transaction, operating lease annual rent                     $ 146 ¥ 1,000,000.0       ¥ 2,000,000.0              
Related party transaction, lease term                     5 years 5 years     20 years 20 years              
Loan One and Two                                              
Related Party Transaction [Line Items]                                              
Due to related parties                                   $ 6,277          
Loan One | Dalian Jin Gang Group                                              
Related Party Transaction [Line Items]                                              
Proceeds from related party debt                 $ 1,569 ¥ 10,000,000                          
Debt instrument, interest rate, stated percentage                                   6.50%          
Loan Two                                              
Related Party Transaction [Line Items]                                              
Proceeds from related party debt       $ 4,708 ¥ 30,000,000                                    
Loan Two | Dalian Jin Gang Group                                              
Related Party Transaction [Line Items]                                              
Debt instrument, interest rate, stated percentage                                   6.50%