XML 107 R84.htm IDEA: XBRL DOCUMENT v3.21.1
Inventories - Schedule (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Inventories [Line Items]    
Less: Impairment $ (3,428) $ (3,716)
Inventories 1,726 5,537
Hardware Devices [Member]    
Inventories [Line Items]    
Inventories 4,830 9,091
Others [Member]    
Inventories [Line Items]    
Inventories $ 324 $ 162