Liability Related to the Sale of Future Royalties - Liability Due to Non-Cash Transaction (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2022 USD ($)
Nonmonetary Transaction [Roll Forward]
Carrying value of liability related to the sale of future royalties beginning balance	$ 53,798
Amortization of capitalized issuance costs	15
Imputed interest expense recognized	1,041
Less: payments to Oberland Capital, LLC	(2,721)
Carrying value of liability related to the sale of future royalties ending balance	$ 52,133