OTHER ASSETS (Details Narrative) - USD ($) $ in Thousands		3 Months Ended		12 Months Ended
	Jun. 28, 2019	Jun. 30, 2020	Dec. 31, 2019	Dec. 31, 2020
Accounts, Notes, Loans and Financing Receivable [Line Items]
Right of use assets			$ 1,806	$ 1,505
Carrying value of note			5,096	5,350
Change in note receivable		$ 194		194
Transformer Business Units [Member] | Subordinated Promissory Notes [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Principal amount	$ 7,500
Carrying value of note				$ 5,300
Interest rate	4.00%			4.00%
Maturity date	Dec. 31, 2022			Dec. 31, 2022
Cash payment for promissory note			1,800
Change in note receivable		$ 194
Revaluation of note				$ 254
Transformer Business Units [Member] | Subordinated Promissory Notes [Member] | First Seller Note [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Principal amount	$ 5,000		$ 3,200
Transformer Business Units [Member] | Subordinated Promissory Notes [Member] | Second Seller Note [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Principal amount	$ 2,500