SUPPLEMENTAL CASH FLOW INFORMATION (Tables)

12 Months Ended

Dec. 31, 2012

Supplemental Cash Flow Information

	Year Ended December 31,
	2012		2011		2010
	(in thousands)
Net cash provided from operating activities included:
Income taxes paid (refunded from) to taxing authorities	$	386	$	675	$	(1,359	)
Interest paid		153,249		133,103		116,766
Non-cash investing and financing activities included:
Asset retirement costs (removed) capitalized, net		57,982		24,061		(6,370	)
Unproved property purchased with stock		—		—		20,000