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SUPPLEMENTARY BALANCE SHEET INFORMATION (Details) - USD ($)
$ in Thousands
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
Dec. 31, 2012
Trade:        
Open accounts $ 2,488 $ 2,595    
Less - allowance for doubtful accounts (245) [1] 0 [1] $ 0 $ (327)
Trade $ 2,243 $ 2,595    
[1] The changes in allowance for doubtful accounts are composed as follows: