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BASIS OF PRESENTATION (Details Narrative) $ in Thousands		3 Months Ended
	Jun. 28, 2019 USD ($)	Jun. 30, 2020 USD ($)	Mar. 31, 2020 USD ($) Segment Number	Dec. 31, 2019 USD ($)
Number of additional locations | Number			5
Number of reportable segments | Segment			2
Carrying value of note			$ 5,207	$ 5,096
Working capital			7,400
Cash and cash equivalents			6,758	8,213
Subsequent Event [Member]
Insurance proceeds received		$ 317
Myers Power Products, Inc. Modified Preliminary Injunction [Member] | Bond [Member]
Debt			12,000
Transformer Business Units [Member]
Purchase price of divestiture	$ 68,000
Transformer Business Units [Member] | Subordinated Promissory Notes [Member]
Principal amount	7,500
Cash payment for promissory note				1,700
Revaluation of note			111
Carrying value of note			$ 5,200	5,100
Transformer Business Units [Member] | Subordinated Promissory Notes [Member] | First Seller Note [Member]
Principal amount	5,000			$ 3,300
Transformer Business Units [Member] | Subordinated Promissory Notes [Member] | Second Seller Note [Member]
Principal amount	$ 2,500

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