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Income Taxes (Tables) | 12 Months Ended
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Dec. 31, 2021
Income Taxes |
Schedule of reconciliation of expected tax computed at statutory federal income tax rate to provision for income taxes | The Company is subject to taxation in the United States of America (“U.S.”) and files tax returns in the U.S. federal jurisdiction and several state jurisdictions. ​ Through December 31, 2021, the Company incurred net operating losses for federal tax purposes of approximately $76,403 thousand. The Company experienced an “ownership change” within the meaning of Section 382(g) of the Internal Revenue Code in April 2012, subjecting net operating loss carryforwards (incurred prior to the ownership change) to an annual limitation, which may restrict the ability to use those losses to offset taxable income in periods following the ownership change. The Company analyzed the available information to determine the amount of the annual limitation and based on that information estimated the limitation to be $686 thousand annually. The net operating loss carry forwards generated before 2018 may be used to reduce taxable income through the years 2028 to 2037. Net operating loss carryforwards generated for year 2018 and thereafter do not expire. ​ A reconciliation of the expected tax computed at the statutory federal income tax rate to the provision for income taxes is as follows:
​ | ​ | ​ | ​ | ​ | ​ | ​
​ |  | 2021 |  | 2020
Expected tax benefit at 21% | ​ | $ | (1,657) | ​ | $ | (1,446)
Change in valuation allowance | ​ |  | 1,558 | ​ |  | 1,325
Other | ​ |  | 99 | ​ |  | 121
Provision for income taxes | ​ | $ | — | ​ | $ | —
​
Schedule of significant components of deferred tax assets (liabilities) | ​
​ | ​ | ​ | ​ | ​ | ​ | ​
​ |  | 2021 |  | 2020
Net operating loss carry forwards | ​ | $ | 16,044 | ​ | $ | 14,620
Accrued liabilities | ​ |  | 22 | ​ |  | 90
Stock compensation | ​ |  | 263 | ​ |  | 120
Depreciation | ​ |  | 26 | ​ |  | (10)
Prepaid expenses | ​ |  | 43 | ​ |  | 20
Other | ​ |  | (10) | ​ |  | (10)
Deferred tax assets, net | ​ |  | 16,388 | ​ |  | 14,830
Valuation allowance | ​ |  | (16,388) | ​ |  | (14,830)
Net deferred tax asset | ​ | $ | — | ​ | $ | —

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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 http://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 http://asc.fasb.org/extlink&oid=121826272&loc=d3e32687-109319 + Details
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