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

Property, Plant and Equipment, Net (Details)

v3.21.1
Property, Plant and Equipment, Net (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Property, Plant and Equipment [Abstract]      
Depreciation expenses $ 12 $ 14 $ 14