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DISCONTINUED OPERATIONS (Details 1) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2017
Dec. 31, 2016
Costs and Expenses    
Loss from discontinued operations, net of income taxes $ (6,647) $ (2,517)
Swithgear Business [Member]    
Schedule of Equity Method Investments [Line Items]    
Revenue 13,001 15,515
Costs and Expenses    
Cost of goods sold 15,317 13,825
Operating Expenses 2,572 3,899
Interest income (5) (3)
Impairment of goodwill 1,445
Other expense 615 349
Total costs and expenses 19,944 18,070
Loss before provision for income taxes (6,943) (2,555)
Income tax benefit (296) (38)
Loss from discontinued operations, net of income taxes $ (6,647) $ (2,517)