BASIS OF PRESENTATION AND SIGNIFICANT ACCOUNTING POLICIES (Tables)

12 Months Ended

Dec. 31, 2018

Accounting Policies [Abstract]

Scehdule of disaggregated revenues

The Company’s disaggregated revenues consist of the following for the year ended December 31, 2018:

	Year ended December 31, 2018
							Digital
	DPC		DPL		Enertec		Farms		I.AM		Total
Primary Geographical
Markets
North America	$	13,875,883	$	11,804	$	—	$	1,675,549	$	3,462,140	$	19,025,376
Europe		159,350		1,656,516		—		—		—		1,815,866
Middle East		—		—		5,226,075		—		—		5,226,075
Other		718,692		368,210		—		—		—		1,086,902
	$	14,753,925	$	2,036,530	$	5,226,075	$	1,675,549	$	3,462,140	$	27,154,219
Major Goods
RF/Microwave Filters	$	3,331,575	$	—	$	—	$	—	$	—	$	3,331,575
Detector logarithmic
video amplifiers		1,338,912		—		—		—		—		1,338,912
Power Supply Units		5,829,125		—		—		—		—		5,829,125
Power Supply Systems		—		2,036,530		—		—		—		2,036,530
Healthcare diagnostic systems		—		—		1,715,512		—		—		1,715,512
Defense systems		—		—		3,510,563		—		—		3,510,563
Digital Currency Mining		—		—		—		1,675,549		—		1,675,549
Restaurant operations		—		—		—		—		3,462,140		3,462,140
Lending activities		347,033		—		—		—		—		347,033
MLSE Systems		3,907,280		—		—		—		—		3,907,280
	$	14,753,925	$	2,036,530	$	5,226,075	$	1,675,549	$	3,462,140	$	27,154,219
Timing of Revenue
Recognition
Goods transferred at a
a point in time	$	10,846,645	$	1,411,798	$	—	$	1,675,549	$	3,462,140	$	17,396,132
Services transferred over time		3,907,280		624,732		5,226,075		—		—		9,758,087
	$	14,753,925	$	2,036,530	$	5,226,075	$	1,675,549	$	3,462,140	$	27,154,219

Schedule of estimated useful lives

Depreciation and amortization are calculated using the straight-line method over the estimated useful lives of the assets, at the following annual rates: 

	Useful lives (in years)
Computer, software and related equipment	3 - 5
Office furniture and equipment	5 - 10
Leasehold improvements	Over the term of the lease or the life of the asset, whichever is shorter.

Schedule of intangible assets, net also include definite lived intangible assets, which are being amortized on a straight-line basis over their estimated useful lives

The Company’s intangible assets, net also include definite lived intangible assets, which are being amortized on a straight-line basis over their estimated useful lives as follows:

	Useful lives (in years)
Customer list	5 - 14
Non-competition agreements	3
Domain name and other intangible assets	3

Schedule of fair value measurement

The following table sets forth the Company’s financial instruments that were measured at fair value on a recurring basis by level within the fair value hierarchy: 

	Fair Value Measurement at December 31, 2018
	Total	Level 1	Level 2	Level 3
Investments in common stock and warrants of AVLP – a related party	$     3,043,499	$        812,858	$               —	$     2,230,641
Investments in marketable securities	178,597	178,597	—	—
Investments in warrants of public companies	34,372	—	—	34,372
Total Investments	$     3,256,468	$        991,455	$               —	$     2,265,013

	Fair Value Measurement at December 31, 2017
	Total	Level 1	Level 2	Level 3
Investments in common stock and warrants of AVLP – a related party	$     7,728,001	$        826,408	$                —	$    6,901,593
Investments in marketable securities	1,834,570	1,834,570	—	$                —
Total Investments	$     9,562,571	$     2,660,978	$                —	$    6,901,593

Schedule of anti-dilutive securities

Anti-dilutive securities, which are convertible into the Company’s Class A common stock, consist of the following at December 31, 2018 and 2017:

	2018		2017
Stock options		373,000		192,125
Warrants		936,381		219,443
Convertible notes		999,641		64,197
Preferred stock		127,551		109,306
Total		2,436,573		585,072