XML 73 R40.htm IDEA: XBRL DOCUMENT v3.20.1
Property and Equipment, Net (Details Textual) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Property and Equipment (Textual)      
Depreciation expenses $ 55 $ 84 $ 104