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The Company’s disaggregated revenues consist of the following for the three months ended March 31, 2022: (Details) - USD ($)
3 Months Ended
Mar. 31, 2022
Mar. 31, 2021
Disaggregation of Revenue [Line Items]    
Revenue $ 14,905,000 $ 8,035,000
Revenue lending and trading activities 17,921,000 5,210,000
Total revenue 32,826,000 13,245,000
R F Microwave Filters [Member]    
Disaggregation of Revenue [Line Items]    
Revenue 1,511,000 1,215,000
Power Supply Units [Member]    
Disaggregation of Revenue [Line Items]    
Revenue 3,527,000 1,621,000
Power Supply Systems [Member]    
Disaggregation of Revenue [Line Items]    
Revenue 48,000 2,233,000
E V Chargers [Member]    
Disaggregation of Revenue [Line Items]    
Revenue 33,000  
Defense Systems [Member]    
Disaggregation of Revenue [Line Items]    
Revenue 3,255,000 2,408,000
Digital Currency Mining [Member]    
Disaggregation of Revenue [Line Items]    
Revenue 3,548,000 130,000
Hotel Oprations [Member]    
Disaggregation of Revenue [Line Items]    
Revenue 2,698,000  
Other [Member]    
Disaggregation of Revenue [Line Items]    
Revenue 285,000 172,000
Goods Transferred at A Point in Time [Member]    
Disaggregation of Revenue [Line Items]    
Revenue 11,172,000 5,443,000
Services Transferred Over Time [Member]    
Disaggregation of Revenue [Line Items]    
Revenue 3,733,000 2,592,000
Detectorlogarithmicvideoamplifiers [Member]    
Disaggregation of Revenue [Line Items]    
Revenue   71,000
Healthcare Diagnostic Systems [Member]    
Disaggregation of Revenue [Line Items]    
Revenue   185,000
North America [Member]    
Disaggregation of Revenue [Line Items]    
Revenue 9,054,000 3,399,000
Europe [Member]    
Disaggregation of Revenue [Line Items]    
Revenue 2,198,000 2,019,000
Middle East [Member]    
Disaggregation of Revenue [Line Items]    
Revenue 3,254,000 2,389,000
Other [Member]    
Disaggregation of Revenue [Line Items]    
Revenue 399,000 228,000
G W W [Member]    
Disaggregation of Revenue [Line Items]    
Revenue 7,245,000 6,350,000
Total revenue 7,245,000 6,350,000
G W W [Member] | R F Microwave Filters [Member]    
Disaggregation of Revenue [Line Items]    
Revenue 1,511,000 1,215,000
G W W [Member] | Power Supply Units [Member]    
Disaggregation of Revenue [Line Items]    
Revenue 2,431,000 238,000
G W W [Member] | Power Supply Systems [Member]    
Disaggregation of Revenue [Line Items]    
Revenue 48,000 2,233,000
G W W [Member] | Defense Systems [Member]    
Disaggregation of Revenue [Line Items]    
Revenue 3,255,000 2,408,000
G W W [Member] | Goods Transferred at A Point in Time [Member]    
Disaggregation of Revenue [Line Items]    
Revenue 3,512,000 3,758,000
G W W [Member] | Services Transferred Over Time [Member]    
Disaggregation of Revenue [Line Items]    
Revenue 3,733,000 2,592,000
G W W [Member] | Detectorlogarithmicvideoamplifiers [Member]    
Disaggregation of Revenue [Line Items]    
Revenue   71,000
G W W [Member] | Healthcare Diagnostic Systems [Member]    
Disaggregation of Revenue [Line Items]    
Revenue   185,000
G W W [Member] | North America [Member]    
Disaggregation of Revenue [Line Items]    
Revenue 1,511,000 1,889,000
G W W [Member] | Europe [Member]    
Disaggregation of Revenue [Line Items]    
Revenue 2,179,000 1,910,000
G W W [Member] | Middle East [Member]    
Disaggregation of Revenue [Line Items]    
Revenue 3,254,000 2,389,000
G W W [Member] | Other [Member]    
Disaggregation of Revenue [Line Items]    
Revenue 301,000 162,000
Turn on Green [Member]    
Disaggregation of Revenue [Line Items]    
Revenue 1,129,000 1,383,000
Total revenue 1,129,000 1,383,000
Turn on Green [Member] | Power Supply Units [Member]    
Disaggregation of Revenue [Line Items]    
Revenue 1,096,000 1,383,000
Turn on Green [Member] | E V Chargers [Member]    
Disaggregation of Revenue [Line Items]    
Revenue 33,000  
Turn on Green [Member] | Goods Transferred at A Point in Time [Member]    
Disaggregation of Revenue [Line Items]    
Revenue 1,129,000 1,383,000
Turn on Green [Member] | North America [Member]    
Disaggregation of Revenue [Line Items]    
Revenue 1,012,000 1,208,000
Turn on Green [Member] | Europe [Member]    
Disaggregation of Revenue [Line Items]    
Revenue 19,000 109,000
Turn on Green [Member] | Other [Member]    
Disaggregation of Revenue [Line Items]    
Revenue 98,000 66,000
D P Lending [Member]    
Disaggregation of Revenue [Line Items]    
Revenue 7,000 302,000
Revenue lending and trading activities 17,921,000 5,210,000
Total revenue 17,928,000 5,512,000
D P Lending [Member] | Other [Member]    
Disaggregation of Revenue [Line Items]    
Revenue 7,000  
D P Lending [Member] | Goods Transferred at A Point in Time [Member]    
Disaggregation of Revenue [Line Items]    
Revenue 7,000 302,000
D P Lending [Member] | North America [Member]    
Disaggregation of Revenue [Line Items]    
Revenue 7,000 302,000
Cryptocurrency [Member]    
Disaggregation of Revenue [Line Items]    
Revenue 3,826,000  
Total revenue 3,826,000  
Cryptocurrency [Member] | Digital Currency Mining [Member]    
Disaggregation of Revenue [Line Items]    
Revenue 3,548,000 130,000
Cryptocurrency [Member] | Other [Member]    
Disaggregation of Revenue [Line Items]    
Revenue 278,000 $ 172,000
Cryptocurrency [Member] | Goods Transferred at A Point in Time [Member]    
Disaggregation of Revenue [Line Items]    
Revenue 3,826,000  
Cryptocurrency [Member] | North America [Member]    
Disaggregation of Revenue [Line Items]    
Revenue 3,826,000  
Real Estate One [Member]    
Disaggregation of Revenue [Line Items]    
Revenue 2,698,000  
Total revenue 2,698,000  
Real Estate One [Member] | Hotel Oprations [Member]    
Disaggregation of Revenue [Line Items]    
Revenue 2,698,000  
Real Estate One [Member] | Goods Transferred at A Point in Time [Member]    
Disaggregation of Revenue [Line Items]    
Revenue 2,698,000  
Real Estate One [Member] | North America [Member]    
Disaggregation of Revenue [Line Items]    
Revenue $ 2,698,000