Intangible assets (Tables)

12 Months Ended

Dec. 31, 2019

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,						As of December 31,
	2019						2018
	Cost		Accumulated amortization		Net		Cost		Accumulated amortization		Net
Developed technology	$	30,100	$	(20,694)	$	9,406	$	30,100	$	(16,931)	$	13,169
In-licensed rights	5,224		(304)		4,920		—		—		—
Total	$	35,324	$	(20,998)	$	14,326	$	30,100	$	(16,931)	$	13,169

Schedule of Finite-Lived Intangible Assets, Future Amortization Expense

The following table summarizes the estimated future amortization for intangible assets for the next five years (in thousands):

	As of December 31, 2019
2020	$	4,285
2021	4,285
2022	2,404
2023	522
2024	522
Total	$	12,018