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Fair Value of Financial Assets and Liabilities (Details) - Schedule of financial assets measured at fair value on a recurring basis - Fair Value of Level 3 investment [Member] - USD ($)
$ in Thousands
3 Months Ended 12 Months Ended
Mar. 31, 2021
Dec. 31, 2020
Fair Value of Financial Assets and Liabilities (Details) - Schedule of financial assets measured at fair value on a recurring basis [Line Items]    
Beginning balance
Ending balance 2,027
Purchase of convertible note 2,000
Accrued interest receivable $ 27