Fair Value fair value (Tables)

9 Months Ended

12 Months Ended

Jul. 31, 2013

Oct. 31, 2012

Fair Value, Assets Measured on Recurring Basis [Table Text Block]

The following table provides information on those derivative assets measured at fair value on a recurring basis at July 31, 2013:



	Carrying Amount in Balance Sheet July 31, 2013		Fair Value July 31, 2013		Fair Value Measurement Using
	Carrying Amount in Balance Sheet July 31, 2013		Fair Value July 31, 2013		Quoted Prices in Active Markets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant unobservable inputs (Level 3)
Financial Assets:
Commodity derivative instruments	$	688	$	688	$	688	$	—	$	—

The following table provides information on those derivative liabilities measured at fair value on a recurring basis at October 31, 2012:



	Carrying Amount in Balance Sheet October 31, 2012			Fair Value October 31, 2012			Fair Value Measurement Using
	Carrying Amount in Balance Sheet October 31, 2012			Fair Value October 31, 2012			Quoted Prices in Active Markets (Level 1)			Significant Other Observable Inputs (Level 2)		Significant unobservable inputs (Level 3)
Financial Liabilities:
Commodity derivative instruments	$	(45,563	)	$	(45,563	)	$	(45,563	)	$	—	$	—

- Definition

Tabular disclosure of liabilities, including [financial] instruments measured at fair value that are classified in stockholders' equity, if any, by class that are measured at fair value on a recurring basis. The disclosures contemplated herein include the fair value measurements at the reporting date by the level within the fair value hierarchy in which the fair value measurements in their entirety fall, segregating fair value measurements using quoted prices in active markets for identical assets (Level 1), significant other observable inputs (Level 2), and significant unobservable inputs (Level 3). Where the quoted price in an active market for the identical liability is not available, the Level 1 input is the quoted price of an identical liability when traded as an asset.

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