BUSINESS SEGMENT, GEOGRAPHIC AND CUSTOMER INFORMATION (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Segment Reporting Information [Line Items]
Revenues	$ 19,490	$ 20,582
Depreciation and Amortization	464	354
Operating Loss	(4,284)	(11,753)
Assets	21,287	28,479
T&D Solutions [Member]
Segment Reporting Information [Line Items]
Assets	3,443	6,075
Critical Power Segment [Member]
Segment Reporting Information [Line Items]
Assets	3,705	4,849
Corporate [Member]
Segment Reporting Information [Line Items]
Assets	14,139	17,507
Operating Segments [Member]
Segment Reporting Information [Line Items]
Assets	21,287	28,431
Operating Segments [Member] | T&D Solutions [Member]
Segment Reporting Information [Line Items]
Revenues	10,257	8,985
Depreciation and Amortization	113	144
Operating Loss	(1,934)	(3,143)
Operating Segments [Member] | T&D Solutions [Member] | Switchgear [Member]
Segment Reporting Information [Line Items]
Revenues	10,257	8,985
Operating Segments [Member] | Critical Power Segment [Member]
Segment Reporting Information [Line Items]
Revenues	9,233	11,597
Depreciation and Amortization	319	162
Operating Loss	(430)	(3,581)
Operating Segments [Member] | Critical Power Segment [Member] | Equipment [Member]
Segment Reporting Information [Line Items]
Revenues	1,574	1,416
Operating Segments [Member] | Critical Power Segment [Member] | Services [Member]
Segment Reporting Information [Line Items]
Revenues	7,659	10,181
Unallocated Corporate Overhead Expenses [Member]
Segment Reporting Information [Line Items]
Depreciation and Amortization	32	48
Operating Loss	$ (1,920)	$ (5,029)