Product Revenue and Reserves for Variable Consideration - Additional Information (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020	Dec. 31, 2020
Disaggregation of Revenue [Line Items]
Total revenues	$ 52,304	$ 88,478
Product revenue, net
Disaggregation of Revenue [Line Items]
Total revenues	30,408	$ 29,209
Accounts receivable, net	$ 28,300		$ 21,900