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


	June 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 June 30, 2012 and December 31, 2011 was 1.7% and 1.0%, respectively.	$	645,000	$	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, $60.0 million of these notes were redeemed, as further described hereafter.		90,000		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 $9.2 million and $10.0 million was unamortized at June 30, 2012 and December 31, 2011, respectively.		455,764		455,014

	$	1,190,764	$	1,245,014