TRADE RECEIVABLES (Tables)

6 Months Ended

Jun. 30, 2012

TRADE RECEIVABLES [Abstract]

Trade receivables

 

Trade receivables, net, at June 30, 2012, and December 31, 2011, consisted of the following:

	June 30, 2012			December 31, 2011
	(thousands of dollars)
Trade receivables	$	25,593		$	23,408
Less allowance for doubtful accounts		(210	)		(210	)
Trade receivables, net	$	25,383		$	23,198

Trade receivables serving as collateral for the Company's line of credit with a domestic bank were $18.1 million and $16.8 million at June 30, 2012, and December 31, 2011, respectively (see Note 7).