Other Long-Term Liabilities (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Other Long-Term Liabilities
Net deferred tax liabilities related to IPR&D (Note 15)	$ 1,840	$ 3,007
Deferred income from sale of tax benefits		1,831
Contingent milestones (Note 4)	8,267	12,485
Deferred revenue	3,386	254
Total	13,493	17,577
Less current portion	(3,372)	(2,026)
Long-term portion	$ 10,121	$ 15,551

Represents the deferred income from the sale of tax benefit.

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

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Amount, after deferred tax asset, of deferred tax liability attributable to taxable differences without jurisdictional netting.

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