Supplemental Disclosures to the Consolidated Statements of Cash Flows

3 Months Ended

Mar. 31, 2012

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:

	Three months ended March 31,
	2012			2011
Net cash provided by operating activities included:
Cash payments for interest	$	31,233		$	21,564
Interest capitalized	(710		)	(615		)
Cash payments for interest, net of amounts capitalized	$	30,523		$	20,949
Cash (receipts) payments for income taxes	$	—		$	—
Non-cash investing activities included:
Asset retirement costs capitalized	$	20		$	159
Oil and natural gas properties acquired through increase (decrease) in accounts payable and accrued liabilities	$	17,505		$	(271	)