BASIS OF PRESENTATION AND SIGNIFICANT ACCOUNTING POLICIES (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Total revenue	$ 8,344	$ 3,220	$ 20,984	$ 6,670
Transferred at Point in Time [Member]
Total revenue			13,698
Transferred over Time [Member]
Total revenue			7,286
RF/Microwave Filters [Member]
Total revenue			2,949
Detector logarithmic video amplifiers [Member]
Total revenue			840
Power Supply Units [Member]
Total revenue			4,743
Power Supply Systems [Member]
Total revenue			1,339
Healthcare Diagnostic Systems [Member]
Total revenue			1,156
Digital Currency Mining [Member]
Total revenue			1,546
MLSE Systems [Member]
Total revenue			3,912
Defense systems [Member]
Total revenue			2,218
Restaurant Operations [Member]
Total revenue			2,087
Lending Activities [Member]
Total revenue			194
DPC [Member]
Total revenue			12,638
DPC [Member] | Transferred at Point in Time [Member]
Total revenue			8,726
DPC [Member] | Transferred over Time [Member]
Total revenue			3,912
DPC [Member] | RF/Microwave Filters [Member]
Total revenue			2,949
DPC [Member] | Detector logarithmic video amplifiers [Member]
Total revenue			840
DPC [Member] | Power Supply Units [Member]
Total revenue			4,743
DPC [Member] | Power Supply Systems [Member]
Total revenue
DPC [Member] | Healthcare Diagnostic Systems [Member]
Total revenue
DPC [Member] | Digital Currency Mining [Member]
Total revenue
DPC [Member] | MLSE Systems [Member]
Total revenue			3,912
DPC [Member] | Defense systems [Member]
Total revenue
DPC [Member] | Restaurant Operations [Member]
Total revenue
DPC [Member] | Lending Activities [Member]
Total revenue			194
DPL [Member]
Total revenue			1,339
DPL [Member] | Transferred at Point in Time [Member]
Total revenue			1,339
DPL [Member] | Transferred over Time [Member]
Total revenue
DPL [Member] | RF/Microwave Filters [Member]
Total revenue
DPL [Member] | Detector logarithmic video amplifiers [Member]
Total revenue
DPL [Member] | Power Supply Units [Member]
Total revenue
DPL [Member] | Power Supply Systems [Member]
Total revenue			1,339
DPL [Member] | Healthcare Diagnostic Systems [Member]
Total revenue
DPL [Member] | Digital Currency Mining [Member]
Total revenue
DPL [Member] | MLSE Systems [Member]
Total revenue
DPL [Member] | Defense systems [Member]
Total revenue
DPL [Member] | Restaurant Operations [Member]
Total revenue
DPL [Member] | Lending Activities [Member]
Total revenue
Enertec [Member]
Total revenue			3,374
Enertec [Member] | Transferred at Point in Time [Member]
Total revenue
Enertec [Member] | Transferred over Time [Member]
Total revenue			3,374
Enertec [Member] | RF/Microwave Filters [Member]
Total revenue
Enertec [Member] | Detector logarithmic video amplifiers [Member]
Total revenue
Enertec [Member] | Power Supply Units [Member]
Total revenue
Enertec [Member] | Power Supply Systems [Member]
Total revenue
Enertec [Member] | Healthcare Diagnostic Systems [Member]
Total revenue			1,156
Enertec [Member] | Digital Currency Mining [Member]
Total revenue
Enertec [Member] | MLSE Systems [Member]
Total revenue
Enertec [Member] | Defense systems [Member]
Total revenue			2,218
Enertec [Member] | Restaurant Operations [Member]
Total revenue
Enertec [Member] | Lending Activities [Member]
Total revenue
SC Mining [Member]
Total revenue			1,546
SC Mining [Member] | Transferred at Point in Time [Member]
Total revenue			1,546
SC Mining [Member] | Transferred over Time [Member]
Total revenue
SC Mining [Member] | RF/Microwave Filters [Member]
Total revenue
SC Mining [Member] | Detector logarithmic video amplifiers [Member]
Total revenue
SC Mining [Member] | Power Supply Units [Member]
Total revenue
SC Mining [Member] | Power Supply Systems [Member]
Total revenue
SC Mining [Member] | Healthcare Diagnostic Systems [Member]
Total revenue
SC Mining [Member] | Digital Currency Mining [Member]
Total revenue			1,546
SC Mining [Member] | MLSE Systems [Member]
Total revenue
SC Mining [Member] | Defense systems [Member]
Total revenue
SC Mining [Member] | Restaurant Operations [Member]
Total revenue
SC Mining [Member] | Lending Activities [Member]
Total revenue
I. AM, Inc. [Member]
Total revenue			2,087
I. AM, Inc. [Member] | Transferred at Point in Time [Member]
Total revenue			2,087
I. AM, Inc. [Member] | Transferred over Time [Member]
Total revenue
I. AM, Inc. [Member] | RF/Microwave Filters [Member]
Total revenue
I. AM, Inc. [Member] | Detector logarithmic video amplifiers [Member]
Total revenue
I. AM, Inc. [Member] | Power Supply Units [Member]
Total revenue
I. AM, Inc. [Member] | Power Supply Systems [Member]
Total revenue
I. AM, Inc. [Member] | Healthcare Diagnostic Systems [Member]
Total revenue
I. AM, Inc. [Member] | Digital Currency Mining [Member]
Total revenue
I. AM, Inc. [Member] | MLSE Systems [Member]
Total revenue
I. AM, Inc. [Member] | Defense systems [Member]
Total revenue
I. AM, Inc. [Member] | Restaurant Operations [Member]
Total revenue			2,087
I. AM, Inc. [Member] | Lending Activities [Member]
Total revenue
North America [Member]
Total revenue			15,599
North America [Member] | DPC [Member]
Total revenue			11,957
North America [Member] | DPL [Member]
Total revenue			9
North America [Member] | Enertec [Member]
Total revenue
North America [Member] | SC Mining [Member]
Total revenue			1,546
North America [Member] | I. AM, Inc. [Member]
Total revenue			2,087
Europe [Member]
Total revenue			1,338
Europe [Member] | DPC [Member]
Total revenue			107
Europe [Member] | DPL [Member]
Total revenue			1,231
Europe [Member] | Enertec [Member]
Total revenue
Europe [Member] | SC Mining [Member]
Total revenue
Middle East [Member]
Total revenue			3,374
Middle East [Member] | DPC [Member]
Total revenue
Middle East [Member] | DPL [Member]
Total revenue
Middle East [Member] | Enertec [Member]
Total revenue			3,374
Middle East [Member] | SC Mining [Member]
Total revenue
Middle East [Member] | I. AM, Inc. [Member]
Total revenue
Other [Member]
Total revenue			673
Other [Member] | DPC [Member]
Total revenue			574
Other [Member] | DPL [Member]
Total revenue			99
Other [Member] | Enertec [Member]
Total revenue
Other [Member] | SC Mining [Member]
Total revenue
Other [Member] | I. AM, Inc. [Member]
Total revenue
I. AM, Inc. [Member] | SC Mining [Member]
Total revenue