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Collaboration Agreement and Stock Purchase Agreement with Bristol Myers Squibb - Additional Information (Details) - USD ($)
$ in Thousands
 12 Months Ended
Jan. 31, 2019
Dec. 31, 2022
Dec. 31, 2021
Collaborative Arrangements And Noncollaborative Arrangement Transactions [Line Items]      
Preferred stock, shares issued   0 0
Deferred revenue current   $ 9,160 $ 17,100
Deferred revenue non-current     7,678
Stock Purchase Agreement with Bristol Myers Squibb | Series A-1 Preferred Stock      
Collaborative Arrangements And Noncollaborative Arrangement Transactions [Line Items]      
Preferred stock, shares issued 14,545,450    
Bristol Myers Squibb Collaboration Agreement and Stock Purchase Agreement | Bristol Myers Squibb      
Collaborative Arrangements And Noncollaborative Arrangement Transactions [Line Items]      
Upfront consideration payment $ 95,000    
Option to exercise additional consideration if clinical trial not completed within research term 250    
Milestone payments eligible to receive 450,000    
Bristol Myers Squibb Collaboration Agreement and Stock Purchase Agreement | Bristol Myers Squibb | IK-175      
Collaborative Arrangements And Noncollaborative Arrangement Transactions [Line Items]      
Amount eligible to receive in case of exercise of options 50,000    
Bristol Myers Squibb Collaboration Agreement and Stock Purchase Agreement | Bristol Myers Squibb | IK-412      
Collaborative Arrangements And Noncollaborative Arrangement Transactions [Line Items]      
Amount eligible to receive in case of exercise of options 40,000    
Bristol Myers Squibb Collaboration Agreement      
Collaborative Arrangements And Noncollaborative Arrangement Transactions [Line Items]      
Upfront amount allocated to equity arrangements 1,800    
Transaction price allocated to revenue arrangement 78,700    
Revenue recognized which were previously included in deferred revenue   15,600 $ 31,000
Deferred revenue   $ 9,200  
Bristol Myers Squibb Collaboration Agreement | IK-175      
Collaborative Arrangements And Noncollaborative Arrangement Transactions [Line Items]      
Transaction price allocated to revenue arrangement 41,200    
Bristol Myers Squibb Collaboration Agreement | IK-412      
Collaborative Arrangements And Noncollaborative Arrangement Transactions [Line Items]      
Transaction price allocated to revenue arrangement $ 37,500