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COMMITMENTS - Business Combination Marketing Agreement (Details) - USD ($)
12 Months Ended
Jun. 30, 2021
Dec. 31, 2020
Jun. 30, 2020
Dec. 31, 2019
Other Commitments [Line Items]        
Common Stock, Par or Stated Value Per Share $ 0.0001 $ 0.0001 $ 0.0001 $ 0.0001
LifeSci Acquisition II Corp        
Other Commitments [Line Items]        
Preferred Stock, Par or Stated Value Per Share 0.0001   0.0001  
Common Stock, Par or Stated Value Per Share $ 0.0001   $ 0.0001  
Subscription agreement | LifeSci Acquisition II Corp | Common Stock        
Other Commitments [Line Items]        
Number of shares agreed to be issued 20,000,000      
Price per share $ 10.00      
Aggregate purchase price $ 200,000,000      
Ladenburg Thalmann Member | LifeSci Acquisition II Corp        
Other Commitments [Line Items]        
Percentage of fees payable to service provider 25.00%      
Percentage of fees that can be allocated to third party service provider 33.00%      
Lifesci Capital Llc Member | LifeSci Acquisition II Corp        
Other Commitments [Line Items]        
Cash fee for services as percentage of gross proceeds of IPO 3.50%      
Cash fee for services on gross proceeds of IPO $ 2,803,164      
Percentage of fees payable to service provider 75.00%      
Science 37 Inc [Member] | LifeSci Acquisition II Corp        
Other Commitments [Line Items]        
Preferred Stock, Par or Stated Value Per Share $ 0.0001      
Common Stock, Par or Stated Value Per Share $ 0.0001      
Quotient for determining exchange ratio 100,000,000      
Science 37 Inc [Member] | Merger agreement | LifeSci Acquisition II Corp | Common Stock        
Other Commitments [Line Items]        
Authorized earnout shares (in shares) 12,500,000      
Earnout period (in months) 3 years      
Earnout shares, threshold trading days 20 days      
Earnout shares, threshold trading period 30 days