Fair Value Measurements (Tables)

9 Months Ended

Sep. 30, 2011

Fair Value Measurements

Schedule of assets measured at fair value using the market value approach on a recurring basis

($ in 000’s)

				Fair Value Measurements at Reporting Date Using
Description	Liabilities at Fair Value			Quoted Prices in  Active Markets for  Identical Liabilities (Level 1)			Significant Other  Observable Inputs (Level 2)		Significant  Unobservable  Inputs (Level 3)
				September 30, 2011
Net derivative liabilities*	$	(6,387	)	$	(6,387	)	$	—	$	—
				December 31, 2010
Net derivative liabilities*	$	(4,091	)	$	(4,091	)	$	—	$	—

*The only recurring measurements are derivative commodity contracts. Therefore, assets and liabilities are netted together in the table above.

Schedule of fair value measurements using significant unobservable inputs

	2011		2010
	Derivatives Commodity		Derivatives Commodity
($ in 000’s)	Contracts(1)		Contracts(1)
Beginning Balance, October 1,	$	—	$	3,237
Total gains or (losses) (realized/unrealized)
Included in earnings (or changes in net assets)	—		—
Included in comprehensive income			—
Purchases, issuances, and settlements	—		—
Transfers out of Level 3(2) (3)			(3,237		)
Ending Balance, September 30,	$	—	$	—
Changes in unrealized gains relating to assets still held at reporting date	$	—	$	—

(1) Net derivatives at September 30, 2011 and 2010 included no derivative assets or derivative liabilities.

(2) Transferred from Level 3 to Level 1 due to an increase in availability of observable market data and increased market liquidity for these derivatives.

(3) The company’s policy is to recognize transfers in and out of a level as of the end of the period.