Annual and transition report of foreign private issuers pursuant to Section 13 or 15(d)

Income Taxes (Details) - Schedule of valuation allowance

v3.20.4
Income Taxes (Details) - Schedule of valuation allowance - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Schedule of valuation allowance [Abstract]      
Beginning balance $ 151,771 $ 152,659 $ 152,062
Additions 524,215   597
Decrease (14,007) (888)  
Ending balance $ 661,979 $ 151,771 $ 152,659