Intangible assets (Tables)

11 Months Ended

Dec. 31, 2019

Goodwill and Intangible Assets Disclosure [Abstract]

Schedule of other intangible assets useful lives

Other intangible assets are amortized in equal installments over their useful estimated lives as follows:  

All patents (once filed)	Over the period of the relevant patents (assumed to be 20 years)
Software licenses	3-5 years
Option over non-financial assets	Over the period of the relevant agreement

	December 31, 2019		January 31, 2019		January 31, 2018
	(in thousands)
Utrophin program acquired	$	4,379	$	4,358	$	4,708
Discuva platform acquired	14,070		14,002		15,125
Option over non-financial assets	881		877		947
Other patents and licenses	432		291		376
Total intangible assets, gross	19,762		19,528		21,156
Less: Accumulated amortization	2,263		1,255		198
Impairment	4,379		4,358		—
Intangible assets, net of accumulated amortization	$	13,120	$	13,915	$	20,958

Schedule of finite-lived intangible assets, future amortization expense

Estimated future amortization expense related to intangible assets held at December 31, 2019 and January 31, 2019 is as follows:

	December 31, 2019		January 31, 2019
	(in thousands)
2020	$	1,083	$	1,150
2021	$	1,048	$	1,133
2022	$	1,048	$	1,102
2023	$	1,048	$	1,102
2024	$	1,048	$	1,102