Other Long-Term Liabilities (Details) - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
Other Long-Term Liabilities
Net deferred tax liabilities related to IPR&D (Note 11)	$ 1,613	$ 1,613
Deferred Income From Sale of Tax Benefits	4,650
Contingent milestones (Note 3)	6,326	6,862
Deferred revenue (Note 10)	455	433
Total	13,044	8,908
Less current portion	(2,505)	(1,554)
Long-term portion	$ 10,539	$ 7,354