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Income Taxes - Deferred Tax Assets and Liabilities (Details) - USD ($)
$ in Thousands
Dec. 31, 2022
Dec. 31, 2021
Deferred tax assets [Abstract]    
Accrued expenses $ 262 $ 41
Share based compensation 107 164
Net operating loss carryforwards 12,605 10,404
Income tax credit carryforwards 956 447
Property and equipment, principally due to differences in depreciation 89 19
Intangible assets 2,073 451
Other, net 53 82
Deferred tax assets (Total) 16,145 11,608
Valuation allowance (16,092) (11,534)
Total deferred tax assets, net of allowance 53 74
Deferred tax liabilities [Abstract]    
Other (53) (74)
Total deferred tax liability (53) (74)
Net deferred tax assets (liability) $ 0 $ 0