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BUSINESS COMBINATION AND INVESTMENT IN AN AFFILIATED COMPANY (Narrative) (Details) - USD ($)
$ / shares in Units, $ in Thousands
12 Months Ended
Oct. 19, 2015
Mar. 11, 2015
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2016
Business Acquisition [Line Items]          
Gain on bargain purchase     $ 4,833    
Aggregate purchase price     $ 3,624  
FAVs [Member]          
Business Acquisition [Line Items]          
Investee ownership percentage   4.90% 4.90%   4.90%
Cost method investments   $ 169      
FAVs [Member] | Piedmont Aviation Component Services LLC Subsidiary [Member]          
Business Acquisition [Line Items]          
Ownership percentage before transaction   23.18%      
Gain from sale of stock   $ 1,198      
FAVs [Member] | Class B Common Stock [Member] | Piedmont Aviation Component Services LLC Subsidiary [Member]          
Business Acquisition [Line Items]          
Number of shares sold   237,932      
Purchase price per share   $ 8.40      
Aggregate purchase price   $ 1,999      
FAVs [Member] | Series A Preferred Stock [Member] | Piedmont Aviation Component Services LLC Subsidiary [Member]          
Business Acquisition [Line Items]          
Number of shares sold   16,253      
Purchase price per share   $ 100      
Aggregate purchase price   $ 1,625      
Turbochrome Ltd. [Member]          
Business Acquisition [Line Items]          
Ownership percentage acquired 100.00%        
Maximum additional amounts which to be pay if annual revenue targets meet $ 2,000        
Gain on bargain purchase $ 4,800        
Earn out consideration paid to date         $ 500
Period of commitment to continue the engagement with acquiree''s CEO 12 months        
Termination Expenses     $ 300    
Transactions costs     $ 303    
Turbochrome Ltd. [Member] | Customer relationships [Member]          
Business Acquisition [Line Items]          
Amortization period 10 years