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License and Collaboration Agreements - Additional Information (Details) - USD ($)
 1 Months Ended 3 Months Ended 6 Months Ended 12 Months Ended
Sep. 30, 2020
Jun. 30, 2021
Sep. 30, 2020
Jun. 30, 2020
Jun. 30, 2021
Jun. 30, 2020
Dec. 31, 2019
Research and License Agreements              
Revenue   $ 142   $ 1,055,582 $ 9,000,000  
Apollomics, Inc.              
Research and License Agreements              
Up-front payment received             $ 9,000,000.0
Milestones based on achievement of certain clinical and regulatory events             75,000,000.0
Milestone payment upon achievement of specified net sales thresholds for all licensed products             $ 105,000,000.0
Milestone revenue recognized based on achievement of certain clinical and regulatory events $ 1,000,000.0   $ 1,000,000.0        
Revenue         $ 1,100,000    
Apollomics, Inc. | Maximum              
Research and License Agreements              
Tiered percentage of annual net sales             15.00%