Receivables

9 Months Ended

Sep. 30, 2012

Receivables [Abstract]

Receivables

4. Receivables

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

	September 30,			December 31,
	2012			2011
Accounts receivable	$	248,462		$	214,608
Notes receivable		99			16
Other receivables		2,307			2,108
Gross receivables		250,868			216,732
Allowance for doubtful accounts receivable		(796	)		(125	)
Net receivables	$	250,072		$	216,607

Bad debt expense related to receivables for the three and nine months ended September 30, 2012 and September 30, 2011 was negligible.