Fair Value Measurements (Tables)

3 Months Ended

Mar. 31, 2012

Fair Value Measurements (Tables) [Abstract]

Assets and liabilities measured at fair value on a recurring basis

		$112,0860			$112,0860			$112,0860		$112,0860
(in thousands)	March 31, 2012
Assets (liabilities)	Level 1			Level 2			Level 3		Total
Cash equivalents	$	10,623		$	—		$	—	$	10,623
Restricted cash		18,785			—			—		18,785
Short term investments		19,996			—			—		19,996
Commodity derivatives, net		(12,280	)		10,849			—		(1,431	)
Convertible preferred securities (b)		—			—			20,360		20,360
Other assets and liabilities (a)		7,211			(2,085	)		—		5,126
Total	$	44,335		$	8,764		$	20,360	$	73,459

		$112,0860		$112,0860		$112,0860			$112,0860
(in thousands)	December 31, 2011
Assets (liabilities)	Level 1		Level 2		Level 3			Total
Cash equivalents	$	183	$	—	$	—		$	183
Restricted cash		18,651		—		—			18,651
Commodity derivatives, net		43,503		22,876		2,467			68,846
Convertible preferred securities (b)		—		—		20,360			20,360
Other assets and liabilities (a)		6,224		—		(2,178	)		4,046
Total	$	68,561	$	22,876	$	20,649		$	112,086

		$112,0860			$112,0860		$112,0860			$112,0860
(in thousands)	March 31, 2011
Assets (liabilities)	Level 1			Level 2		Level 3			Total
Cash equivalents	$	10,597		$	—	$	—		$	10,597
Restricted cash		12,353			—		—			12,353
Commodity derivatives, net		(13,486	)		122,287		14,983			123,784
Convertible preferred securities (b)		—			—		15,790			15,790
Other assets and liabilities (a)		6,291			—		(1,502	)		4,789
Total	$	15,755		$	122,287	$	29,271		$	167,313

(a) Included in other assets and liabilities is interest rate and foreign currency derivatives, swaptions and deferred compensation assets.

(b) Recorded in "Other noncurrent assets" on the Company's Consolidated Balance Sheets

Beginning and ending balances for the Company's fair value measurements using Level 3 inputs

	2012								2011
(in thousands)	Interest rate derivatives and swaptions			Convertible preferred securities		Commodity derivatives, net			Interest rate derivatives and swaptions			Convertible preferred securities		Commodity derivatives, net
Asset (liability) at December 31,	$	(2,178	)	$	20,360	$	2,467		$	(2,156	)	$	15,790	$	12,406
Gains (losses) included in earnings:
New contracts		—			—		—			—			—		442
Change in market prices		—			—		—			(2	)		—		1,877
Settled contracts		—			—		—			—			—		(2,242	)
Unrealized gains (losses) included in other comprehensive income		—			—		—			149			—		—
New contracts entered into		—			—		—			507			—		—
Transfers to level 2		2,178			—		(2,467	)		—			—		—
Transfers from level 2		—			—		—			—			—		2,500
Asset (liability) at March 31,	$	—		$	20,360	$	—		$	(1,502	)	$	15,790	$	14,983

Fair value of long-term debt estimated using quoted market prices or discounted future cash flows

(in thousands)	March 31, 2012		December 31, 2011
Fair value of long-term debt	$	259,280	$	279,001
Fair value in excess of carrying value		8,520		7,908