Additional Balance Sheet Details (Tables)

12 Months Ended

Dec. 31, 2014

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Trade and Other Receivables, Net

Trade and Other Receivables, Net

	December 31,
In thousands	2014		2013
Commodity derivatives settlement receivables	$	59,755	$	—
Trade accounts receivable, net	45,407		53,737
Federal income tax receivable, net	37,652		—
Other receivables	14,141		24,558
Total	$	156,955	$	78,295

Accounts Payable and Accrued Liabilities

Accounts Payable and Accrued Liabilities

	December 31,
In thousands	2014		2013
Accrued exploration and development costs	$	90,939	$	100,564
Accounts payable	64,604		63,263
Accrued compensation	62,513		55,043
Accrued lease operating expenses	56,798		59,762
Accrued interest	48,255		68,871
Taxes payable	39,816		28,019
Other	31,833		35,021
Total	$	394,758	$	410,543