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ACCOUNTS RECEIVABLE (Tables)
12 Months Ended
Dec. 31, 2016
ACCOUNTS RECEIVABLE  
Schedule of accounts receivable
December 31,   2016     2015  
(in thousands)                
Trade receivables   $ 744     $ 557  
Other     368       724  
Total     1,112       1,281  
Less: allowance for doubtful accounts     (25 )     (25 )
Net accounts receivable   $ 1,087     $ 1,256