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ACCOUNTS RECEIVABLE (Tables)
12 Months Ended
Dec. 31, 2015
ACCOUNTS RECEIVABLE  
Schedule of accounts receivable
December 31,   2015     2014  
(in thousands)            
Trade receivables   $ 557     $ 1,741  
Other     724       653  
Total     1,281       2,394  
Less: allowance for doubtful accounts     (25 )     (25 )
Net accounts receivable   $ 1,256     $ 2,369