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BUSINESS SEGMENT AND GEOGRAPHIC INFORMATION (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Segment Reporting Information [Line Items]
Revenues	$ 3,502	$ 5,001
Depreciation and Amortization	144	122
Operating Loss	(1,106)	(1,747)
Services [Member]
Segment Reporting Information [Line Items]
Revenues	1,589	1,869
Operating Segments [Member] | T&D Solutions [Member]
Segment Reporting Information [Line Items]
Revenues	1,387	2,877
Depreciation and Amortization	18	34
Operating Loss	(439)	(777)
Operating Segments [Member] | T&D Solutions [Member] | Switchgear [Member]
Segment Reporting Information [Line Items]
Revenues	1,387	2,877
Operating Segments [Member] | Critical Power Segment [Member]
Segment Reporting Information [Line Items]
Revenues	2,115	2,124
Depreciation and Amortization	119	79
Operating Loss	(84)	(200)
Operating Segments [Member] | Critical Power Segment [Member] | Equipment [Member]
Segment Reporting Information [Line Items]
Revenues	526	255
Operating Segments [Member] | Critical Power Segment [Member] | Services [Member]
Segment Reporting Information [Line Items]
Revenues	1,589	1,869
Unallocated Corporate Overhead Expenses [Member]
Segment Reporting Information [Line Items]
Depreciation and Amortization	7	9
Operating Loss	$ (583)	$ (770)

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The current period expense charged against earnings on long-lived, physical assets not used in production, and which are not intended for resale, to allocate or recognize the cost of such assets over their useful lives; or to record the reduction in book value of an intangible asset over the benefit period of such asset; or to reflect consumption during the period of an asset that is not used in production.

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