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Fair Value Measurements (Tables)
3 Months Ended
Mar. 31, 2022
Fair Value Disclosures [Abstract]  
Fair Value Measurement Inputs and Valuation Techniques As of March 31, 2022 and December 31, 2021, the Company calculated the estimated fair value of the milestones using the following significant unobservable inputs:
 
Value or Range (Weighted-Average)
Unobservable inputMarch 31, 2022December 31, 2021
Discount rate6.7%5.9%
Probability of achievement
80% - 100% (94%)
80% - 100% (94%)