Fair Value Measurements (Tables)

9 Months Ended

Sep. 30, 2011

Fair Value Measurements

Recurring Fair Value Measurements

	September 30, 2011
	Level 2		Level 3		Total
	(In thousands)
Financial assets:
Commodity derivatives	$	39,565	$	25,129	$	64,694

	December 31, 2010
	Level 2			Level 3			Total
	(In thousands)
Financial assets (liabilities):
Interest rate swaps	$	0		$	(1,614	)	$	(1,614	)
Commodity derivatives	$	(19,954	)	$	10,868		$	(9,086	)

Reconciliations Of Level 3 Fair Value Measurements

	Net Derivatives
	For the Three Months Ended September 30, 2011					For the Nine Months Ended September 30, 2011
	Interest Rate Swaps		Commodity Swaps			Interest Rate Swaps			Commodity Swaps
	(In thousands)
Beginning of period	$	0	$	11,749		$	(1,614	)	$	10,868
Total gains or (losses) (realized and unrealized):
Included in earnings (1)		0		4,046			(1,734	)		11,923
Included in other comprehensive income		0		13,182			1,614			13,264
Settlements		0		(3,848	)		1,734			(10,926	)
End of period	$	0	$	25,129		$	0		$	25,129
Total gains for the period included in earnings attributable to the change in unrealized gains relating to assets still held at end of period	$	0	$	198		$	0		$	997

(1) Interest rate swaps and commodity swaps are reported in the unaudited condensed consolidated statements of income in interest, net and revenues, respectively.

	Net Derivatives
	For the Three Months Ended September 30, 2010						For the Nine Months Ended September 30, 2010
	Interest Rate Swaps			Commodity Swaps and Collars			Interest Rate Swaps			Commodity Swaps and Collars
	(In thousands)
Beginning of period	$	(1,971	)	$	33,313		$	(1,948	)	$	19,948
Total gains or (losses) (realized and unrealized):
Included in earnings (1)		(298	)		16,558			(907	)		44,322
Included in other comprehensive income (loss)		39			(1,266	)		16			10,646
Purchases, issuance and settlements		298			(16,809	)		907			(43,120	)
End of period	$	(1,932	)	$	31,796		$	(1,932	)	$	31,796
Total gains (losses) for the period included in earnings attributable to the change in unrealized gains relating to assets still held at end of period	$	0		$	(251	)	$	0		$	1,202

(1) Interest rate swaps and commodity swaps and collars are reported in the unaudited condensed consolidated statements of income in interest, net and revenues, respectively.