Revenue (Details) - USD ($)	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Disaggregation of Revenue [Line Items]
Total	$ 26,759,000	$ 44,566,000
Geographic Markets
Disaggregation of Revenue [Line Items]
Total	26,759,000	44,566,000
Geographic Markets | Malaysia
Disaggregation of Revenue [Line Items]
Total	83	0
Geographic Markets | USA
Disaggregation of Revenue [Line Items]
Total	1,631	41,873
Geographic Markets | PRC
Disaggregation of Revenue [Line Items]
Total	25,045	2,693
Segments
Disaggregation of Revenue [Line Items]
Total	26,759	44,566,000
Segments | Digital asset management services
Disaggregation of Revenue [Line Items]
Total	0	40,700,000
Segments | Digital advertising services and other
Disaggregation of Revenue [Line Items]
Total	1,631,000	1,173,000
Segments | Electric vehicles*
Disaggregation of Revenue [Line Items]
Total	19,462,000	2,693,000
Segments | Combustion engine vehicles*
Disaggregation of Revenue [Line Items]
Total	5,160	0
Segments | Charging and batteries*
Disaggregation of Revenue [Line Items]
Total	506,000	0
Timing of Revenue Recognition [Member]
Disaggregation of Revenue [Line Items]
Total	26,759,000	44,566,000
Timing of Revenue Recognition [Member] | Products and services transferred at a point in time [Member]
Disaggregation of Revenue [Line Items]
Total	26,729,000	3,866,000
Timing of Revenue Recognition [Member] | Services provided over time [Member]
Disaggregation of Revenue [Line Items]
Total	$ 30,000	$ 40,700,000