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

Fair Value Measurements (Details) - Schedule of financial assets and liabilities measured at fair value on a recurring basis

v3.21.1
Fair Value Measurements (Details) - Schedule of financial assets and liabilities measured at fair value on a recurring basis - Fair Value, Recurring [Member] - USD ($)
$ in Thousands
Dec. 31, 2020
Dec. 31, 2019
Fair Value Measurements (Details) - Schedule of financial assets and liabilities measured at fair value on a recurring basis [Line Items]    
Short-term investment $ 75 $ 64
Total financial assets 75 64
Level 1 [Member]]    
Fair Value Measurements (Details) - Schedule of financial assets and liabilities measured at fair value on a recurring basis [Line Items]    
Short-term investment 75 64
Total financial assets 75 64
Level 2 [Member]    
Fair Value Measurements (Details) - Schedule of financial assets and liabilities measured at fair value on a recurring basis [Line Items]    
Short-term investment
Total financial assets
Level 3 [Member]    
Fair Value Measurements (Details) - Schedule of financial assets and liabilities measured at fair value on a recurring basis [Line Items]    
Short-term investment
Total financial assets