Annual report pursuant to Section 13 and 15(d)

Income Taxes (Details) - Schedule of difference between income tax provision and U.S Federal statutory rates

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Income Taxes (Details) - Schedule of difference between income tax provision and U.S Federal statutory rates - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Schedule of difference between income tax provision and U.S Federal statutory rates [Abstract]    
Federal statutory income taxes $ (4,665) $ (4,599)
Federal statutory income taxes, percentage (21.00%) (21.00%)
State income taxes $ 56 $ 1,077
State income taxes, percentage 0.30% 4.90%
Deferred true-up $ (64) $ 1,810
Deferred true-up, percentage (0.30%) 8.30%
Research and Development/Orphan Drug Tax Credit $ (1,766) $ (1,975)
Research and Development/Orphan Drug Tax Credit, percentage (8.00%) (9.00%)
Other $ 202 $ 145
Other, percentage 0.90% 0.60%
Change in valuation allowance $ 6,237 $ 3,542
Change in valuation allowance, percentage 28.10% 16.20%
Provision for income tax
Provision for income tax, percentage