LONG-TERM DEBT (Tables)

6 Months Ended

Jun. 30, 2013

Debt Disclosure [Abstract]

Components of Long-term Debt

The components of long-term debt as of are as follows:

	June 30,		December 31,
	2013		2012
	(Thousands of dollars)
Senior Notes issued September 23, 2010, interest only payable semi-annually at 8.625%, maturing October 15, 2018	$	300,000	$	300,000
Revolving Credit Facility due September 1, 2014 with a group of commercial banks, interest payable at variable rates		75,723		86,755
Total long-term debt	$	375,723	$	386,755