Financial Commitments and Contingencies and Key License Agreements - Operating Lease Balance Sheet Information (Details) - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
Commitments and Contingencies Disclosure [Abstract]
Operating Lease, Liability, Current, Statement of Financial Position [Extensible List]	Accounts payable and other accrued liabilities	Accounts payable and other accrued liabilities
Operating Lease, Liability, Noncurrent, Statement of Financial Position [Extensible List]	Other long-term liabilities	Other long-term liabilities
Operating lease right-of-use assets - non-current	$ 2,107	$ 2,505
Operating lease liabilities - current	1,001	1,282
Operating lease liabilities - non-current	1,296	1,452
Total operating lease liabilities	$ 2,297	$ 2,734