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Summary of Significant Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2021

Accounting Policies [Abstract]

Schedule of acquired intangible assets

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

Intangible Asset						Amortization Period
Option over non-financial assets						Over the period of the relevant agreement

Components of the Company's acquired intangible assets are comprised of the following:

						December 31, 2021
						Gross						Accumulated amortization and impairment charges						Net
Utrophin program acquired						$	4,487					$	(4,487)					$	—
Discuva platform acquired						14,416						(4,017)						10,399
Option over non-financial asset						912						(912)						—
Other patents and licenses						148						(148)						—
						$	19,963					$	(9,564)					$	10,399

						December 31, 2020
						Gross						Accumulated amortization and impairment charges						Net
Utrophin program acquired						$	4,534					$	(4,534)					$	—
Discuva platform acquired						14,565						(3,050)						11,515
Option over non-financial asset(1)						921						(921)						—
Other patents and licenses						150						(150)						—
						$	20,170					$	(8,655)					$	11,515

(1)During the year ended December 31, 2020, management identified an impairment related to the option over non-financial asset pursuant to an Evaluation and Option Agreement with a collaboration partner. The partner is no longer conducting antibiotic candidate programs over which the Company had the option, management therefore determined that the fair value of the option to acquire the assignment of the proprietary rights for antibiotic candidates is $0. Accordingly, the asset was written off in its entirety resulting in an impairment charge of $859 recognized in operating expenses.

Schedule of property and equipment useful lives

Depreciation is calculated based on cost, less residual value, in equal annual installments over the estimated useful lives of the assets. The residual value, if not insignificant, is reassessed annually.

Leasehold improvements			Over the shorter of the asset's useful life or the remaining lease term
Laboratory equipment			2-10 years
Office and IT equipment			3-5 years

Property and equipment consisted of the following:

			December 31, 2021						December 31, 2020
Laboratory equipment			$	2,626					$	759
Furniture and fixtures, office equipment and software			1,081						804
Leasehold improvements			364						291
Property and equipment, gross			4,071						1,854
Less: accumulated depreciation			3,377						1,129
Property and equipment, net			$	694					$	725

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Tabular disclosure of physical assets used in the normal conduct of business and not intended for resale. Includes, but is not limited to, balances by class of assets, depreciation and depletion expense and method used, including composite depreciation, and accumulated deprecation.

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