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Fair Value Measurements (Details 2) - Level 3 - USD ($)
$ in Thousands
 3 Months Ended
Mar. 31, 2021
Jun. 30, 2021
Revenue - based payments   $ 746
Valuation technique Discounted cash flow  
Unobservable inputs Discount Rate  
Range   17.38%
Probability of milestone payment   90.00%
Projected year of payments 2021