Annual report pursuant to Section 13 and 15(d)

Property and Equipment, Net (Details Textual)

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Property and Equipment, Net (Details Textual) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Property and Equipment, Net (Textual)    
Depreciation and amortization expense $ 98 $ 355