Schedule II - Valuation and Qualifying Accounts

12 Months Ended

Dec. 31, 2012

Schedule II - Valuation and Qualifying Accounts [Abstract]

Schedule II - Valuation and Qualifying Accounts

SCHEDULE II — VALUATION AND QUALIFYING ACCOUNTS 

			Additions
	Balance at Beginning of Period		Charged/ (Credit) to Expense			Charged to Other Accounts		Deductions			Balance at End of Period
	(In thousands of dollars)
Year ended December 31, 2012
Allowance for doubtful accounts	$	1,100	$	(314	)	$	25	$	—		$	811
Year ended December 31, 2011
Allowance for doubtful accounts	$	1,269	$	(52	)	$	—	$	(117	)	$	1,100
Year ended December 31, 2010:
Allowance for doubtful accounts	$	2,119	$	(733	)	$	—	$	(117	)	$	1,269