Supplemental Cash Flow Information

12 Months Ended

Dec. 31, 2015

Supplemental Cash Flow Elements [Abstract]

Supplemental Cash Flow Information

(13) Supplemental Cash Flow Information

	Year Ended December 31,
	2015			2014			2013
	(in thousands)
Net cash provided from operating activities included:
Income taxes paid to (refunded from) taxing authorities	$	100		$	(156	)	$	(347	)
Interest paid		168,826			165,530			159,137
Non-cash investing and financing activities included:
Asset retirement costs capitalized, net	$	22,184		$	56,822		$	76,373
(Decrease) increase in accrued capital expenditures		(225,455	)		150,604			27,079