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Summary of Significant Accounting Policies (Tables) | 12 Months Ended
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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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