Intangible assets (Tables)

12 Months Ended

Dec. 31, 2021

Goodwill and Intangible Assets Disclosure [Abstract]

Schedule of Finite-Lived Intangible Assets

Intangible assets, net of accumulated amortization, are summarized as follows (in thousands):

	As of December 31, 2021
	Cost		Accumulated amortization		Impairment		Net
In-licensed rights	$	5,224	(1,219)		(4,005)		—
Total	$	5,224	$	(1,219)	$	(4,005)	$	—

	As of December 31, 2020(1)
	Cost		Accumulated amortization		Impairment		Net
In-licensed rights	$	5,224	(827)		—		4,397
Total	$	5,224	$	(827)	$	—	$	4,397

(1) Prior period amounts have been retrospectively adjusted to reflect the effects of the Separation.

Schedule of Finite-Lived Intangible Assets, Future Amortization Expense