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Taxes (Tables) | 12 Months Ended
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Dec. 31, 2022
Taxes [Abstract] |
Schedule of Components of (Loss) Income Before Taxes from Continuing Operations | (Loss) income from continuing operations before taxes is comprised of the following components for the years ended December 31, 2021 and 2022 (in thousands): ​
​ | ​ | ​ | ​ | ​ | ​ | ​
​ |  | Year Ended December 31,
​ |  | 2022 |  | 2021
​ | ​ | ​ | ​ | ​ | ​ | As restated (see Note 1)
Domestic | ​ | $ | (1,981) | ​ | $ | (1,622)
Foreign | ​ |  | (23,934) | ​ |  | (20,563)
Loss from continuing operations before taxes | ​ | $ | (25,915) | ​ | $ | (22,185)
Schedule of Benefit for Income Taxes from Continuing Operations | The benefit (provision) for income taxes from continuing operations consists of the following (in thousands):
​ | ​ | ​ | ​ | ​ | ​ | ​
​ |  | Year Ended December 31,
​ |  | 2022 |  | 2021
​ | ​ | ​ | ​ | ​ | ​ | As restated (see Note 1)
Current  –  domestic | ​ | $ | (2) | ​ | $ | (2)
Current  –  foreign | ​ |  | 4,719 | ​ |  | 3,730
Current  –  total | ​ |  | 4,717 | ​ |  | 3,728
Deferred  –  domestic | ​ |  | — | ​ |  | —
Income tax benefit | ​ | $ | 4,717 | ​ | $ | 3,728
Schedule of Reconciliation of the (Benefit) Provision for Income Taxes from Continuing Operations with the Amount Computed by Applying the Statutory Federal Tax Rate to Loss Before Income Taxes | A reconciliation of the (benefit) provision for income taxes from continuing operations with the amount computed by applying the statutory federal tax rate to loss from continuing operations before income taxes is as follows (in thousands):
​ | ​ | ​ | ​ | ​ | ​ | ​
​ |  | Year Ended December 31,
​ |  | 2022 |  | 2021
​ | ​ | ​ | ​ | ​ | ​ | As restated (see Note 1)
Loss from continuing operations before taxes | ​ | $ | (25,915) | ​ | $ | (22,185)
Income tax expense computed at statutory federal tax rate | ​ |  | (5,442) | ​ |  | (4,659)
Disallowed expenses and non-taxable income | ​ |  | 369 | ​ |  | 328
Loss surrendered to generate R&D credit | ​ |  | 6,169 | ​ |  | 4,892
Additional research and development tax relief | ​ |  | (4,719) | ​ |  | (3,730)
Stock Compensation | ​ | ​ | 105 | ​ | ​ | —
Change in valuation allowance | ​ |  | 2,310 | ​ |  | 15,260
Foreign items, including change in tax rates, and other | ​ |  | (20) | ​ |  | (181)
Change in UK Tax Rate | ​ |  | (2) | ​ |  | (12,831)
Other foreign items | ​ |  | (3,487) | ​ |  | (2,807)
​ | ​ | $ | (4,717) | ​ | $ | (3,728)
Schedule of Significant Components of the Entity's Deferred Tax Assets | Significant components of the Company’s deferred tax assets are shown below (in thousands):
​ | ​ | ​ | ​ | ​ | ​ | ​
​ |  | Year Ended December 31,
​ |  | 2022 |  | 2021
​ | ​ | ​ | ​ | ​ | ​ | As restated (see Note 1)
Net operating loss and tax credit carryforwards | ​ | $ | 53,092 | ​ | $ | 56,593
Depreciation, amortization and impairment of property and equipment | ​ |  | 61 | ​ |  | 34
Stock options | ​ |  | 153 | ​ |  | 67
Right of use asset | ​ | ​ | (40) | ​ | ​ | (32)
Lease liability | ​ | ​ | 40 | ​ | ​ | 32
Deferred tax assets | ​ |  | 53,306 | ​ |  | 56,694
Valuation allowance for deferred tax assets | ​ |  | (53,306) | ​ |  | (56,694)
Net deferred tax assets | ​ | $ | — | ​ | $ | —

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- Definition Tabular disclosure of the components of income tax expense attributable to continuing operations for each year presented including, but not limited to: current tax expense (benefit), deferred tax expense (benefit), investment tax credits, government grants, the benefits of operating loss carryforwards, tax expense that results from allocating certain tax benefits either directly to contributed capital or to reduce goodwill or other noncurrent intangible assets of an acquired entity, adjustments of a deferred tax liability or asset for enacted changes in tax laws or rates or a change in the tax status of the entity, and adjustments of the beginning-of-the-year balances of a valuation allowance because of a change in circumstances that causes a change in judgment about the realizability of the related deferred tax asset in future years. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 9 -URI https://asc.fasb.org/extlink&oid=121826272&loc=d3e32639-109319 + Details
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- Definition Tabular disclosure of the components of net deferred tax asset or liability recognized in an entity's statement of financial position, including the following: the total of all deferred tax liabilities, the total of all deferred tax assets, the total valuation allowance recognized for deferred tax assets. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 2 -URI https://asc.fasb.org/extlink&oid=121826272&loc=d3e32537-109319 + Details
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- Definition Tabular disclosure of the reconciliation using percentage or dollar amounts of the reported amount of income tax expense attributable to continuing operations for the year to the amount of income tax expense that would result from applying domestic federal statutory tax rates to pretax income from continuing operations. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 12 -URI https://asc.fasb.org/extlink&oid=121826272&loc=d3e32687-109319 + Details
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