Commitments and Contingencies - Additional Information (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Commitments And Contingencies Disclosure [Line Items]
Contingent milestone payments	$ 2,400
Additional royalty payments rate	3.00%
Supply Agreement
Commitments And Contingencies Disclosure [Line Items]
Purchase obligation	$ 2,106
Purchases under supply agreements	$ 132	$ 0