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SHARE-BASED COMPENSATION, Share Options (Details)
12 Months Ended
Dec. 30, 2021
shares
Apr. 17, 2018
Installment
shares
Dec. 31, 2017
$ / shares
shares
Aug. 01, 2017
$ / shares
shares
May 31, 2016
$ / shares
shares
Mar. 07, 2016
$ / shares
shares
Dec. 31, 2021
USD ($)
Dec. 31, 2020
USD ($)
Dec. 31, 2019
USD ($)
Feb. 10, 2016
shares
Share-Based Compensation [Abstract]                    
Share-based compensation expenses | $             $ 1,128,325 $ 3,364,217 $ 4,923,509  
Amended 2016 Plan [Member]                    
Share-Based Compensation [Abstract]                    
Options granted (in shares) 12,891,130                  
Exchange ratio 0.71563                  
Options converted (in shares) 9,225,271                  
Employees and Directors [Member] | 2016 Plan [Member]                    
Share-Based Compensation [Abstract]                    
Shares authorized (in shares)   24,624,157                
Number of additional shares available for issuance (in shares)   10,484,797                
Number of equal annual instalments | Installment   5                
Percentage of each equal annual instalments   20.00%                
Options granted (in shares)     2,580,000 6,300,000 650,000 12,169,840        
Exercise price range, lower range limit (in dollars per share) | $ / shares     $ 1.6500 $ 1.6500 $ 0.2000 $ 0.2000        
Exercise price range, upper range limit (in dollars per share) | $ / shares     $ 1.8792 $ 1.8792 $ 1.2092 $ 1.2092        
Employees and Directors [Member] | 2016 Plan [Member] | Minimum [Member]                    
Share-Based Compensation [Abstract]                    
Options expiration period             6 years      
Options contractual term             6 years      
Employees and Directors [Member] | 2016 Plan [Member] | Maximum [Member]                    
Share-Based Compensation [Abstract]                    
Shares authorized (in shares)                   14,139,360
Options expiration period             8 years      
Options contractual term             8 years