Other Long-Term Liabilities (Details) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Other Long-Term Liabilities
Net deferred tax liabilities related to IPR&D (Note 12)	$ 1,840	$ 1,840
Contingent milestones (Note 3)	8,750	8,267
Deferred revenue	3,153	3,386
Total	13,743	13,493
Less current portion	(7,585)	(3,372)
Long-term portion	$ 6,158	$ 10,121

Amount of liability recognized arising from contingent consideration in a business combination.

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