Quarterly report pursuant to Section 13 or 15(d)

TRADE RECEIVABLES

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TRADE RECEIVABLES
6 Months Ended
Jun. 30, 2015
TRADE RECEIVABLES [Abstract]  
TRADE RECEIVABLES
3. TRADE RECEIVABLES

Trade receivables, net, consisted of the following:

   
June 30, 2015
   
December 31, 2014
 
   
(thousands of dollars)
 
Trade receivables
  $ 22,332     $ 28,481  
Less allowance for doubtful accounts
    (210 )     (210 )
    Trade receivables, net
  $ 22,122     $ 28,271  

Trade receivables serves as collateral for our amended and restated loan agreement. See Note 8.