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License Agreements and Grants - National Institute of Health Grant (Details) - USD ($)
$ in Millions
1 Months Ended 9 Months Ended 68 Months Ended
Feb. 28, 2015
Sep. 30, 2020
Sep. 30, 2019
Sep. 30, 2020
Research and Development Arrangement, Contract to Perform for Others [Line Items]        
Cumulative amount awarded       $ 1.5
National Institute of Health Grant        
Research and Development Arrangement, Contract to Perform for Others [Line Items]        
Grant period 5 years      
Total grant funding $ 5.0 $ 0.1 $ 0.2