Quarterly report pursuant to Section 13 or 15(d)

TRADE RECEIVABLES

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TRADE RECEIVABLES
 9 Months Ended
Sep. 30, 2014
TRADE RECEIVABLES [Abstract]  
TRADE RECEIVABLES
3. TRADE RECEIVABLES

Trade receivables, net, consisted of the following:

   
September 30, 2014
    
December 31, 2013
  
   
(thousands of dollars)
  
Trade receivables
  
$
27,835
    
$
22,279
  
Less allowance for doubtful accounts
    
(210
)
    
(210
)
Trade receivables, net
  
$
27,625
    
$
22,069
  

Trade receivables serving as collateral for our line of credit with a domestic bank were $22.1 million and $17.7 million at September 30, 2014, and December 31, 2013, respectively (see Note 7).