Annual report pursuant to Section 13 and 15(d)

Income Taxes (Details Narrative)

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Income Taxes (Details Narrative) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Tax Credit Carryforward [Line Items]      
Deferred tax assets valuation allowance $ 34,388 $ 31,023 $ 25,200
Deferred tax asset amount 3,400 5,800  
Operating loss carryforwards   $ 38,100  
Operating loss carryforwards, expiration year   2032  
Operating loss carryforwards with no expiration   $ 64,500  
Sale of net operating losses $ 3,491 1,328  
Limitations on net operating loss deductibility, description In addition, the Tax Cuts and Jobs Act, signed into law on December 22, 2017 imposes significant additional limitations on the deductibility of interest and limits NOL deductions to 80% of net taxable income for losses arising in taxable years beginning after December 31, 2017    
Federal and State research and development tax credit carry forwards [Member]      
Tax Credit Carryforward [Line Items]      
Operating loss carryforwards   $ 3,800