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Related Party Transactions (Details) - USD ($)
$ in Thousands
1 Months Ended 12 Months Ended
Dec. 31, 2019
Dec. 31, 2019
Dec. 31, 2018
Related Party Transaction [Line Items]      
Related party committed expenditures $ 1,470    
Other Affiliates      
Related Party Transaction [Line Items]      
Research and development expense   $ 1,005 $ 183