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GOODWILL AND OTHER INTANGIBLE ASSETS (Tables)
 6 Months Ended
Jun. 30, 2019
Goodwill and Intangible Assets Disclosure [Abstract]  
Schedule of carrying amount of goodwill by reportable segment

There were no changes in the carrying values of goodwill for the six months ended June 30, 2019.

 

    T&D     Critical Power        
    Solutions     Solutions     Total  
    Segment     Segment     Goodwill  
Gross Goodwill:                        
Balance as of January 1, 2019   $ —     $ 2,969     $ 2,969  
No activity     —       —       —  
Balance as of June 30, 2019   $ —     $ 2,969     $ 2,969  
Schedule of changes in intangible asset balances

Changes in the carrying values of intangible assets for the six months ended June 30, 2019, were as follows:

 

    T&D     Critical Power     Total  
    Solutions     Solutions     Intangible  
    Segment     Segment     Assets  
Balance as of January 1, 2019, net   $ —     $ 124     $ 124  
Amortization     —       (21 )     (21 )
Balance as of June 30, 2019, net   $ —     $ 103     $ 103  
Schedule of components of intangible assets

The components of intangible assets as of June 30, 2019 are summarized below:

 

    Weighted Average Amortization Years     Gross Carrying Amount     Accumulated Amortization     Net Book Value  
Internally developed software     7     $ 289     $ (186 )   $ 103  
Total intangible assets           $ 289     $ (186 )   $ 103