Debt outstanding as of September 30, 2012 and December 31, 2011 consists of the following (in thousands):


	September 30, 2012		December 31, 2011

Revolving Credit Facility, principal due at maturity in December 2016; interest payable periodically at variable interest rates. The weighted average rate at September 30, 2012 and December 31, 2011 was 1.7% and 1.0%, respectively.	$	635,000	$	265,000

6.25% Senior Notes, principal due at maturity in March 2013; interest payable semi-annually in March and September at 6.25%. These notes were redeemed in 2012, as further described hereafter.		—		375,000

6.75% Senior Notes, principal due at maturity in January 2014; interest payable semi-annually in January and July at 6.75%. During June 2012 and August 2012, $60.0 million and $50.0 million, respectively, of these notes were redeemed, as further described hereafter.		40,000		150,000

7.75% Senior Notes, principal due at maturity in June 2017; interest payable semi-annually in June and December at 7.75%. These notes were issued with a $13.4 million discount, of which $8.8 million and $10.0 million was unamortized at September 30, 2012 and December 31, 2011, respectively.		456,152		455,014


	$	1,131,152	$	1,245,014