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Income Taxes (Tables)

12 Months Ended

Dec. 31, 2022

Income Tax Disclosure [Abstract]

Schedule of income tax expenses (benefits) from continuing operations

The income tax expenses (benefits) from continuing operations for the years ended December 31, 2022 and 2021, are summarized as follows:

​	​	​	​	​	​	​
​		2022			2021
Federal:	​	​	​	​	​	​
Current	​	$	—	​	$	—
Deferred	​		—	​		—
​	​		—	​		—
State:	​	​	​	​	​	​
Current	​		9	​		3
Deferred	​		—	​		—
​	​		9	​		3
Total	​	$	9	​	$	3

Schedule of computation of federal statutory tax rates

The provision for income taxes differs from income taxes computed at the federal statutory tax rates for the years ended December 31, 2022 and 2021, due to the following items:

​	​	​	​	​	​
​		2022		2021
Statutory rate		21.0	%	21.0	%
State and local taxes		2.0		2.5	​
Change in valuation allowance		(19.0)		(20.0)	​
Other		1.0		(0.1)	​
Permanent differences		(5.0)		(3.4)	​
​		—	%	—	%

Schedule of significant portions of deferred income tax assets and liabilities

The income tax effects of temporary differences that give rise to significant portions of the deferred income tax assets and liabilities at December 31, 2022 and 2021, are presented below:

​	​	​	​	​	​	​
​		2022			2021
Deferred tax assets:	​	​	​	​	​	​
NOL carryforwards	​	$	30,421	​	$	27,002
Fixed assets and intangibles	​		2,371	​		2,306
Accruals	​		815	​		108
Inventory	​		76	​		229
Other	​		87	​		—
Capitalized R&D expenses	​		4,613	​		—
Stock-based compensation expense	​		76	​		63
Total deferred income tax assets	​		38,459	​		29,708
Deferred tax liabilities:	​			​
Prepaid expenses	​		(101)	​		(78)
Total deferred income tax assets and liabilities	​		38,358	​		29,630
Less: valuation allowance	​		(38,358)	​		(29,630)
Net deferred income tax assets and liabilities	​	$	—	​	$	—

Summary of net operating loss carryforwards

​

​	​	​	​	​	​	​
​	​	December 31, 2022
​		Federal			State
NOLs expiring between 2029 and 2037	​	$	43,912	​	$	67,380
NOLs which do not expire	​		82,009	​		18,398
Total NOLs	​	$	125,921	​	$	85,778

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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.

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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.

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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.

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Tabular disclosure of pertinent information, such as tax authority, amounts, and expiration dates, of net operating loss carryforwards, including an assessment of the likelihood of utilization.

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