Quarterly report pursuant to sections 13 or 15(d)

TRADE RECEIVABLES

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TRADE RECEIVABLES
6 Months Ended
Jun. 30, 2013
TRADE RECEIVABLES [Abstract]  
TRADE RECEIVABLES
4. TRADE RECEIVABLES

Trade receivables, net, consisted of the following:

   
June 30, 2013
   
December 31, 2012
 
   
(thousands of dollars)
 
Trade receivables
 
$
21,291
   
$
16,012
 
Less allowance for doubtful accounts
   
(210
)
   
(210
)
    Trade receivables, net
 
$
21,081
   
$
15,802
 

Trade receivables serving as collateral for the Company’s line of credit with a domestic bank were $17.2 million and $11.7 million at June 30, 2013, and December 31, 2012, respectively (see Note 8).