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Intangible Assets - Finite-lived Intangible Assets (Details) - USD ($)
$ in Thousands
1 Months Ended 12 Months Ended
Mar. 31, 2021
Dec. 31, 2021
Finite-lived intangible asset    
Estimated life 20 years  
Cost   $ 20,000
Accumulated Amortization   750
Net intangible assets $ 20,000 $ 19,250
Regulatory milestone    
Finite-lived intangible asset    
Estimated life   20 years
Cost   $ 20,000
Accumulated Amortization   750
Net intangible assets   $ 19,250