XML 24 R10.htm IDEA: XBRL DOCUMENT v3.8.0.1
TRADE RECEIVABLES
3 Months Ended
Mar. 31, 2018
TRADE RECEIVABLES [Abstract]  
TRADE RECEIVABLES
3. TRADE RECEIVABLES

Trade receivables, net, consisted of the following:

  
March 31, 2018
  
December 31, 2017
 
  
(thousands of dollars)
 
Trade receivables
 
$
27,849
  
$
26,079
 
Less allowance for doubtful accounts
  
(428
)
  
(300
)
    Trade receivables, net
 
$
27,421
  
$
25,779
 

Trade receivables serves as collateral for our amended and restated credit agreement. See Note 10.