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REVENUE DISAGGREGATION (Details) - USD ($)
 3 Months Ended
Mar. 31, 2023
Mar. 31, 2022
Disaggregation of Revenue [Line Items]    
Total revenue $ 31,186,000 $ 32,826,000
Transferred at Point in Time [Member]    
Disaggregation of Revenue [Line Items]    
Total revenue 20,174,000 11,172,000
Transferred over Time [Member]    
Disaggregation of Revenue [Line Items]    
Total revenue 15,951,000 3,733,000
Revenue from contracts with customers [Member]    
Disaggregation of Revenue [Line Items]    
Total revenue 36,125,000 14,905,000
RF/microwave filters [Member]    
Disaggregation of Revenue [Line Items]    
Total revenue 1,247,000 1,511,000
Detector logarithmic video amplifiers [Member]    
Disaggregation of Revenue [Line Items]    
Total revenue 545,000 1,096,000
Power supply units & systems [Member]    
Disaggregation of Revenue [Line Items]    
Total revenue 3,939,000  
Healthcare Diagnostic Systems [Member]    
Disaggregation of Revenue [Line Items]    
Total revenue 1,137,000  
Electric vehicle chargers [Member]    
Disaggregation of Revenue [Line Items]    
Total revenue 51,000 33,000
Defense Systems [Member]    
Disaggregation of Revenue [Line Items]    
Total revenue 2,665,000 3,255,000
Digital Currency Mining [Member]    
Disaggregation of Revenue [Line Items]    
Total revenue 7,347,000 3,548,000
Hotel Operations [Member]    
Disaggregation of Revenue [Line Items]    
Total revenue 2,243,000 2,698,000
Karaoke machines and related [Member]    
Disaggregation of Revenue [Line Items]    
Total revenue 3,383,000  
Crane rental [Member]    
Disaggregation of Revenue [Line Items]    
Total revenue 12,646,000  
Other [Member]    
Disaggregation of Revenue [Line Items]    
Total revenue 922,000 285,000
Revenue from contracts with customers [Member]    
Disaggregation of Revenue [Line Items]    
Total revenue 36,125,000 14,905,000
Revenue Lending and Trading Activities [Member]    
Disaggregation of Revenue [Line Items]    
Total revenue (4,939,000) 17,921,000
Total [Member]    
Disaggregation of Revenue [Line Items]    
Total revenue 31,186,000 32,826,000
Power Supply Units [Member]    
Disaggregation of Revenue [Line Items]    
Total revenue   2,479,000
Revenue from Contract with Customer Benchmark [Member]    
Disaggregation of Revenue [Line Items]    
Total revenue 36,125,000 14,905,000
North America [Member]    
Disaggregation of Revenue [Line Items]    
Total revenue 29,635,000 9,054,000
North America [Member] | Revenue Lending and Trading Activities [Member]    
Disaggregation of Revenue [Line Items]    
Total revenue (4,939,000) 17,921,000
Europe [Member]    
Disaggregation of Revenue [Line Items]    
Total revenue 2,470,000 2,198,000
Middle East [Member]    
Disaggregation of Revenue [Line Items]    
Total revenue 4,020,000 3,653,000
GIGA [Member]    
Disaggregation of Revenue [Line Items]    
Total revenue 8,708,000 7,245,000
GIGA [Member] | Transferred at Point in Time [Member]    
Disaggregation of Revenue [Line Items]    
Total revenue 5,406,000 3,512,000
GIGA [Member] | Transferred over Time [Member]    
Disaggregation of Revenue [Line Items]    
Total revenue 3,302,000 3,733,000
GIGA [Member] | Revenue from contracts with customers [Member]    
Disaggregation of Revenue [Line Items]    
Total revenue 8,708,000 7,245,000
GIGA [Member] | RF/microwave filters [Member]    
Disaggregation of Revenue [Line Items]    
Total revenue 1,247,000 1,511,000
GIGA [Member] | Detector logarithmic video amplifiers [Member]    
Disaggregation of Revenue [Line Items]    
Total revenue 545,000
GIGA [Member] | Power supply units & systems [Member]    
Disaggregation of Revenue [Line Items]    
Total revenue 3,114,000  
GIGA [Member] | Healthcare Diagnostic Systems [Member]    
Disaggregation of Revenue [Line Items]    
Total revenue 1,137,000  
GIGA [Member] | Electric vehicle chargers [Member]    
Disaggregation of Revenue [Line Items]    
Total revenue
GIGA [Member] | Defense Systems [Member]    
Disaggregation of Revenue [Line Items]    
Total revenue 2,665,000 3,255,000
GIGA [Member] | Digital Currency Mining [Member]    
Disaggregation of Revenue [Line Items]    
Total revenue
GIGA [Member] | Hotel Operations [Member]    
Disaggregation of Revenue [Line Items]    
Total revenue
GIGA [Member] | Karaoke machines and related [Member]    
Disaggregation of Revenue [Line Items]    
Total revenue  
GIGA [Member] | Crane rental [Member]    
Disaggregation of Revenue [Line Items]    
Total revenue  
GIGA [Member] | Other [Member]    
Disaggregation of Revenue [Line Items]    
Total revenue
GIGA [Member] | Revenue from contracts with customers [Member]    
Disaggregation of Revenue [Line Items]    
Total revenue 8,708,000 7,245,000
GIGA [Member] | Revenue Lending and Trading Activities [Member]    
Disaggregation of Revenue [Line Items]    
Total revenue
GIGA [Member] | Total [Member]    
Disaggregation of Revenue [Line Items]    
Total revenue 8,708,000 7,245,000
GIGA [Member] | Power Supply Units [Member]    
Disaggregation of Revenue [Line Items]    
Total revenue   2,479,000
GIGA [Member] | Revenue from Contract with Customer Benchmark [Member]    
Disaggregation of Revenue [Line Items]    
Total revenue 8,708,000 7,245,000
GIGA [Member] | North America [Member]    
Disaggregation of Revenue [Line Items]    
Total revenue 2,334,000 1,511,000
GIGA [Member] | North America [Member] | Revenue Lending and Trading Activities [Member]    
Disaggregation of Revenue [Line Items]    
Total revenue
GIGA [Member] | Europe [Member]    
Disaggregation of Revenue [Line Items]    
Total revenue 2,441,000 2,179,000
GIGA [Member] | Middle East [Member]    
Disaggregation of Revenue [Line Items]    
Total revenue 3,933,000 3,555,000
Turn On Green [Member]    
Disaggregation of Revenue [Line Items]    
Total revenue 876,000 1,129,000
Turn On Green [Member] | Transferred at Point in Time [Member]    
Disaggregation of Revenue [Line Items]    
Total revenue 873,000 1,129,000
Turn On Green [Member] | Transferred over Time [Member]    
Disaggregation of Revenue [Line Items]    
Total revenue 3,000
Turn On Green [Member] | Revenue from contracts with customers [Member]    
Disaggregation of Revenue [Line Items]    
Total revenue 876,000 1,129,000
Turn On Green [Member] | RF/microwave filters [Member]    
Disaggregation of Revenue [Line Items]    
Total revenue
Turn On Green [Member] | Detector logarithmic video amplifiers [Member]    
Disaggregation of Revenue [Line Items]    
Total revenue 1,096,000
Turn On Green [Member] | Power supply units & systems [Member]    
Disaggregation of Revenue [Line Items]    
Total revenue 825,000  
Turn On Green [Member] | Healthcare Diagnostic Systems [Member]    
Disaggregation of Revenue [Line Items]    
Total revenue  
Turn On Green [Member] | Electric vehicle chargers [Member]    
Disaggregation of Revenue [Line Items]    
Total revenue 51,000 33,000
Turn On Green [Member] | Defense Systems [Member]    
Disaggregation of Revenue [Line Items]    
Total revenue
Turn On Green [Member] | Digital Currency Mining [Member]    
Disaggregation of Revenue [Line Items]    
Total revenue
Turn On Green [Member] | Hotel Operations [Member]    
Disaggregation of Revenue [Line Items]    
Total revenue
Turn On Green [Member] | Karaoke machines and related [Member]    
Disaggregation of Revenue [Line Items]    
Total revenue  
Turn On Green [Member] | Crane rental [Member]    
Disaggregation of Revenue [Line Items]    
Total revenue  
Turn On Green [Member] | Other [Member]    
Disaggregation of Revenue [Line Items]    
Total revenue
Turn On Green [Member] | Revenue from contracts with customers [Member]    
Disaggregation of Revenue [Line Items]    
Total revenue 876,000 1,129,000
Turn On Green [Member] | Revenue Lending and Trading Activities [Member]    
Disaggregation of Revenue [Line Items]    
Total revenue
Turn On Green [Member] | Total [Member]    
Disaggregation of Revenue [Line Items]    
Total revenue 876,000 1,129,000
Turn On Green [Member] | Power Supply Units [Member]    
Disaggregation of Revenue [Line Items]    
Total revenue  
Turn On Green [Member] | Revenue from Contract with Customer Benchmark [Member]    
Disaggregation of Revenue [Line Items]    
Total revenue 876,000 1,129,000
Turn On Green [Member] | North America [Member]    
Disaggregation of Revenue [Line Items]    
Total revenue 785,000 1,012,000
Turn On Green [Member] | North America [Member] | Revenue Lending and Trading Activities [Member]    
Disaggregation of Revenue [Line Items]    
Total revenue
Turn On Green [Member] | Europe [Member]    
Disaggregation of Revenue [Line Items]    
Total revenue 4,000 19,000
Turn On Green [Member] | Middle East [Member]    
Disaggregation of Revenue [Line Items]    
Total revenue 87,000 98,000
Fintech [Member]    
Disaggregation of Revenue [Line Items]    
Total revenue (4,939,000) 17,921,000
Fintech [Member] | Transferred at Point in Time [Member]    
Disaggregation of Revenue [Line Items]    
Total revenue
Fintech [Member] | Transferred over Time [Member]    
Disaggregation of Revenue [Line Items]    
Total revenue
Fintech [Member] | Revenue from contracts with customers [Member]    
Disaggregation of Revenue [Line Items]    
Total revenue
Fintech [Member] | RF/microwave filters [Member]    
Disaggregation of Revenue [Line Items]    
Total revenue
Fintech [Member] | Detector logarithmic video amplifiers [Member]    
Disaggregation of Revenue [Line Items]    
Total revenue
Fintech [Member] | Power supply units & systems [Member]    
Disaggregation of Revenue [Line Items]    
Total revenue  
Fintech [Member] | Healthcare Diagnostic Systems [Member]    
Disaggregation of Revenue [Line Items]    
Total revenue  
Fintech [Member] | Electric vehicle chargers [Member]    
Disaggregation of Revenue [Line Items]    
Total revenue
Fintech [Member] | Defense Systems [Member]    
Disaggregation of Revenue [Line Items]    
Total revenue
Fintech [Member] | Digital Currency Mining [Member]    
Disaggregation of Revenue [Line Items]    
Total revenue
Fintech [Member] | Hotel Operations [Member]    
Disaggregation of Revenue [Line Items]    
Total revenue
Fintech [Member] | Karaoke machines and related [Member]    
Disaggregation of Revenue [Line Items]    
Total revenue  
Fintech [Member] | Crane rental [Member]    
Disaggregation of Revenue [Line Items]    
Total revenue  
Fintech [Member] | Other [Member]    
Disaggregation of Revenue [Line Items]    
Total revenue
Fintech [Member] | Revenue from contracts with customers [Member]    
Disaggregation of Revenue [Line Items]    
Total revenue
Fintech [Member] | Revenue Lending and Trading Activities [Member]    
Disaggregation of Revenue [Line Items]    
Total revenue (4,939,000) 17,921,000
Fintech [Member] | Total [Member]    
Disaggregation of Revenue [Line Items]    
Total revenue (4,939,000) 17,921,000
Fintech [Member] | Power Supply Units [Member]    
Disaggregation of Revenue [Line Items]    
Total revenue  
Fintech [Member] | Revenue from Contract with Customer Benchmark [Member]    
Disaggregation of Revenue [Line Items]    
Total revenue
Fintech [Member] | North America [Member]    
Disaggregation of Revenue [Line Items]    
Total revenue
Fintech [Member] | North America [Member] | Revenue Lending and Trading Activities [Member]    
Disaggregation of Revenue [Line Items]    
Total revenue (4,939,000) 17,921,000
Fintech [Member] | Europe [Member]    
Disaggregation of Revenue [Line Items]    
Total revenue
Fintech [Member] | Middle East [Member]    
Disaggregation of Revenue [Line Items]    
Total revenue
BNI [Member]    
Disaggregation of Revenue [Line Items]    
Total revenue 7,805,000 3,833,000
BNI [Member] | Transferred at Point in Time [Member]    
Disaggregation of Revenue [Line Items]    
Total revenue 7,805,000 3,833,000
BNI [Member] | Transferred over Time [Member]    
Disaggregation of Revenue [Line Items]    
Total revenue
BNI [Member] | Revenue from contracts with customers [Member]    
Disaggregation of Revenue [Line Items]    
Total revenue 7,805,000 3,833,000
BNI [Member] | RF/microwave filters [Member]    
Disaggregation of Revenue [Line Items]    
Total revenue
BNI [Member] | Detector logarithmic video amplifiers [Member]    
Disaggregation of Revenue [Line Items]    
Total revenue
BNI [Member] | Power supply units & systems [Member]    
Disaggregation of Revenue [Line Items]    
Total revenue  
BNI [Member] | Healthcare Diagnostic Systems [Member]    
Disaggregation of Revenue [Line Items]    
Total revenue  
BNI [Member] | Electric vehicle chargers [Member]    
Disaggregation of Revenue [Line Items]    
Total revenue
BNI [Member] | Defense Systems [Member]    
Disaggregation of Revenue [Line Items]    
Total revenue
BNI [Member] | Digital Currency Mining [Member]    
Disaggregation of Revenue [Line Items]    
Total revenue 7,347,000 3,548,000
BNI [Member] | Hotel Operations [Member]    
Disaggregation of Revenue [Line Items]    
Total revenue
BNI [Member] | Karaoke machines and related [Member]    
Disaggregation of Revenue [Line Items]    
Total revenue  
BNI [Member] | Crane rental [Member]    
Disaggregation of Revenue [Line Items]    
Total revenue  
BNI [Member] | Other [Member]    
Disaggregation of Revenue [Line Items]    
Total revenue 458,000 285,000
BNI [Member] | Revenue from contracts with customers [Member]    
Disaggregation of Revenue [Line Items]    
Total revenue 7,805,000 3,833,000
BNI [Member] | Revenue Lending and Trading Activities [Member]    
Disaggregation of Revenue [Line Items]    
Total revenue
BNI [Member] | Total [Member]    
Disaggregation of Revenue [Line Items]    
Total revenue 7,805,000 3,833,000
BNI [Member] | Power Supply Units [Member]    
Disaggregation of Revenue [Line Items]    
Total revenue  
BNI [Member] | Revenue from Contract with Customer Benchmark [Member]    
Disaggregation of Revenue [Line Items]    
Total revenue 7,805,000 3,833,000
BNI [Member] | North America [Member]    
Disaggregation of Revenue [Line Items]    
Total revenue 7,805,000 3,833,000
BNI [Member] | North America [Member] | Revenue Lending and Trading Activities [Member]    
Disaggregation of Revenue [Line Items]    
Total revenue
BNI [Member] | Europe [Member]    
Disaggregation of Revenue [Line Items]    
Total revenue
BNI [Member] | Middle East [Member]    
Disaggregation of Revenue [Line Items]    
Total revenue
AGREE [Member]    
Disaggregation of Revenue [Line Items]    
Total revenue 2,243,000 2,698,000
AGREE [Member] | Transferred at Point in Time [Member]    
Disaggregation of Revenue [Line Items]    
Total revenue 2,243,000 2,698,000
AGREE [Member] | Transferred over Time [Member]    
Disaggregation of Revenue [Line Items]    
Total revenue
AGREE [Member] | Revenue from contracts with customers [Member]    
Disaggregation of Revenue [Line Items]    
Total revenue 2,243,000 2,698,000
AGREE [Member] | RF/microwave filters [Member]    
Disaggregation of Revenue [Line Items]    
Total revenue
AGREE [Member] | Detector logarithmic video amplifiers [Member]    
Disaggregation of Revenue [Line Items]    
Total revenue
AGREE [Member] | Power supply units & systems [Member]    
Disaggregation of Revenue [Line Items]    
Total revenue  
AGREE [Member] | Healthcare Diagnostic Systems [Member]    
Disaggregation of Revenue [Line Items]    
Total revenue  
AGREE [Member] | Electric vehicle chargers [Member]    
Disaggregation of Revenue [Line Items]    
Total revenue
AGREE [Member] | Defense Systems [Member]    
Disaggregation of Revenue [Line Items]    
Total revenue
AGREE [Member] | Digital Currency Mining [Member]    
Disaggregation of Revenue [Line Items]    
Total revenue
AGREE [Member] | Hotel Operations [Member]    
Disaggregation of Revenue [Line Items]    
Total revenue 2,243,000 2,698,000
AGREE [Member] | Karaoke machines and related [Member]    
Disaggregation of Revenue [Line Items]    
Total revenue  
AGREE [Member] | Crane rental [Member]    
Disaggregation of Revenue [Line Items]    
Total revenue  
AGREE [Member] | Other [Member]    
Disaggregation of Revenue [Line Items]    
Total revenue
AGREE [Member] | Revenue from contracts with customers [Member]    
Disaggregation of Revenue [Line Items]    
Total revenue 2,243,000 2,698,000
AGREE [Member] | Revenue Lending and Trading Activities [Member]    
Disaggregation of Revenue [Line Items]    
Total revenue
AGREE [Member] | Total [Member]    
Disaggregation of Revenue [Line Items]    
Total revenue 2,243,000 2,698,000
AGREE [Member] | Power Supply Units [Member]    
Disaggregation of Revenue [Line Items]    
Total revenue  
AGREE [Member] | Revenue from Contract with Customer Benchmark [Member]    
Disaggregation of Revenue [Line Items]    
Total revenue 2,243,000 2,698,000
AGREE [Member] | North America [Member]    
Disaggregation of Revenue [Line Items]    
Total revenue 2,243,000 2,698,000
AGREE [Member] | North America [Member] | Revenue Lending and Trading Activities [Member]    
Disaggregation of Revenue [Line Items]    
Total revenue
AGREE [Member] | Europe [Member]    
Disaggregation of Revenue [Line Items]    
Total revenue
AGREE [Member] | Middle East [Member]    
Disaggregation of Revenue [Line Items]    
Total revenue
SMC [Member]    
Disaggregation of Revenue [Line Items]    
Total revenue 3,383,000  
SMC [Member] | Transferred at Point in Time [Member]    
Disaggregation of Revenue [Line Items]    
Total revenue 3,383,000  
SMC [Member] | Transferred over Time [Member]    
Disaggregation of Revenue [Line Items]    
Total revenue  
SMC [Member] | Revenue from contracts with customers [Member]    
Disaggregation of Revenue [Line Items]    
Total revenue 3,383,000  
SMC [Member] | RF/microwave filters [Member]    
Disaggregation of Revenue [Line Items]    
Total revenue  
SMC [Member] | Detector logarithmic video amplifiers [Member]    
Disaggregation of Revenue [Line Items]    
Total revenue  
SMC [Member] | Power supply units & systems [Member]    
Disaggregation of Revenue [Line Items]    
Total revenue  
SMC [Member] | Healthcare Diagnostic Systems [Member]    
Disaggregation of Revenue [Line Items]    
Total revenue  
SMC [Member] | Electric vehicle chargers [Member]    
Disaggregation of Revenue [Line Items]    
Total revenue  
SMC [Member] | Defense Systems [Member]    
Disaggregation of Revenue [Line Items]    
Total revenue  
SMC [Member] | Digital Currency Mining [Member]    
Disaggregation of Revenue [Line Items]    
Total revenue  
SMC [Member] | Hotel Operations [Member]    
Disaggregation of Revenue [Line Items]    
Total revenue  
SMC [Member] | Karaoke machines and related [Member]    
Disaggregation of Revenue [Line Items]    
Total revenue 3,383,000  
SMC [Member] | Crane rental [Member]    
Disaggregation of Revenue [Line Items]    
Total revenue  
SMC [Member] | Other [Member]    
Disaggregation of Revenue [Line Items]    
Total revenue  
SMC [Member] | Revenue from contracts with customers [Member]    
Disaggregation of Revenue [Line Items]    
Total revenue 3,383,000  
SMC [Member] | Revenue Lending and Trading Activities [Member]    
Disaggregation of Revenue [Line Items]    
Total revenue  
SMC [Member] | Total [Member]    
Disaggregation of Revenue [Line Items]    
Total revenue 3,383,000  
SMC [Member] | Revenue from Contract with Customer Benchmark [Member]    
Disaggregation of Revenue [Line Items]    
Total revenue 3,383,000  
SMC [Member] | North America [Member]    
Disaggregation of Revenue [Line Items]    
Total revenue 3,383,000  
SMC [Member] | North America [Member] | Revenue Lending and Trading Activities [Member]    
Disaggregation of Revenue [Line Items]    
Total revenue  
SMC [Member] | Europe [Member]    
Disaggregation of Revenue [Line Items]    
Total revenue  
SMC [Member] | Middle East [Member]    
Disaggregation of Revenue [Line Items]    
Total revenue  
Energy [Member]    
Disaggregation of Revenue [Line Items]    
Total revenue 13,110,000  
Energy [Member] | Transferred at Point in Time [Member]    
Disaggregation of Revenue [Line Items]    
Total revenue 464,000  
Energy [Member] | Transferred over Time [Member]    
Disaggregation of Revenue [Line Items]    
Total revenue 12,646,000  
Energy [Member] | Revenue from contracts with customers [Member]    
Disaggregation of Revenue [Line Items]    
Total revenue 13,110,000  
Energy [Member] | RF/microwave filters [Member]    
Disaggregation of Revenue [Line Items]    
Total revenue  
Energy [Member] | Detector logarithmic video amplifiers [Member]    
Disaggregation of Revenue [Line Items]    
Total revenue  
Energy [Member] | Power supply units & systems [Member]    
Disaggregation of Revenue [Line Items]    
Total revenue  
Energy [Member] | Healthcare Diagnostic Systems [Member]    
Disaggregation of Revenue [Line Items]    
Total revenue  
Energy [Member] | Electric vehicle chargers [Member]    
Disaggregation of Revenue [Line Items]    
Total revenue  
Energy [Member] | Defense Systems [Member]    
Disaggregation of Revenue [Line Items]    
Total revenue  
Energy [Member] | Digital Currency Mining [Member]    
Disaggregation of Revenue [Line Items]    
Total revenue  
Energy [Member] | Hotel Operations [Member]    
Disaggregation of Revenue [Line Items]    
Total revenue  
Energy [Member] | Karaoke machines and related [Member]    
Disaggregation of Revenue [Line Items]    
Total revenue  
Energy [Member] | Crane rental [Member]    
Disaggregation of Revenue [Line Items]    
Total revenue 12,646,000  
Energy [Member] | Other [Member]    
Disaggregation of Revenue [Line Items]    
Total revenue 464,000  
Energy [Member] | Revenue from contracts with customers [Member]    
Disaggregation of Revenue [Line Items]    
Total revenue 13,110,000  
Energy [Member] | Revenue Lending and Trading Activities [Member]    
Disaggregation of Revenue [Line Items]    
Total revenue  
Energy [Member] | Total [Member]    
Disaggregation of Revenue [Line Items]    
Total revenue 13,110,000  
Energy [Member] | Revenue from Contract with Customer Benchmark [Member]    
Disaggregation of Revenue [Line Items]    
Total revenue 13,110,000  
Energy [Member] | North America [Member]    
Disaggregation of Revenue [Line Items]    
Total revenue 13,085,000  
Energy [Member] | North America [Member] | Revenue Lending and Trading Activities [Member]    
Disaggregation of Revenue [Line Items]    
Total revenue  
Energy [Member] | Europe [Member]    
Disaggregation of Revenue [Line Items]    
Total revenue 25,000  
Energy [Member] | Middle East [Member]    
Disaggregation of Revenue [Line Items]    
Total revenue