Receivables (Tables)

3 Months Ended

Mar. 31, 2013

Receivables [Abstract]

Summary of the Company's receivable balances

The following is a summary of the Company's receivable balances (in thousands of dollars):

	March 31,			December 31,
	2013			2012
Accounts receivable	$	249,545		$	252,413
Notes receivable		63			-
Other receivables		3,053			1,623
Gross receivables		252,661			254,036
Allowance for doubtful accounts receivable		(1,752	)		(767	)
Net receivables	$	250,909		$	253,269