Supplemental disclosures to the consolidated statements of cash flows

9 Months Ended

Sep. 30, 2014

Supplemental Cash Flow Elements [Abstract]

Supplemental disclosures to the consolidated statements of cash flows

Supplemental disclosures to the consolidated statements of cash flows

Supplemental disclosures to the consolidated statements of cash flows are presented below:

	Nine months ended September 30,
	2014			2013
Net cash provided by operating activities included:
Cash payments for interest	$	74,446		$	70,735
Interest capitalized	(9,957		)	(11,670		)
Cash payments for interest, net of amounts capitalized	$	64,489		$	59,065
Cash payments for income taxes	$	591		$	240
Non-cash investing activities included:
Asset retirement obligation additions and revisions	$	7,118		$	1,036
Oil and natural gas properties acquired through increase in accounts payable and accrued liabilities	$	22,458		$	8,298