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OTHER ASSETS (Details Narrative) - USD ($) $ in Thousands		3 Months Ended		6 Months Ended
	Jun. 28, 2019	Jun. 30, 2021	Dec. 31, 2019	Jun. 30, 2021	Jun. 30, 2020	Dec. 31, 2020	Aug. 16, 2019
Right of use assets		$ 1,086		$ 1,086		$ 1,505
Change in note receivable					$ 194
Carrying value of note		$ 5,564		$ 5,564		$ 5,350
Transformer Business Units [Member]
Purchase price of divestiture	$ 68,000
Transformer Business Units [Member] | Subordinated Debt [Member]
Principal amount							$ 7,500
Interest rate		4.00%		4.00%
Maturity date				Dec. 31, 2022
Cash payment for promissory note			$ 1,800
Change in note receivable		$ 194
Revaluation of note				$ 214
Carrying value of note		$ 5,600		$ 5,600
Transformer Business Units [Member] | Subordinated Debt [Member] | First Seller Note [Member]
Principal amount			$ 3,200				5,000
Transformer Business Units [Member] | Subordinated Debt [Member] | Second Seller Note [Member]
Principal amount							$ 2,500

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