ASSET RETIREMENT OBLIGATIONS (ARO) (Tables)

12 Months Ended

Sep. 30, 2011

Asset Retirement Obligation Disclosure [Abstract]

Schedule of Change in Asset Retirement Obligation [Table Text Block]

The following is an analysis of the change in the ARO liability for the fiscal year ended September 30:

(Thousands)	2011			2010
Balance at October 1	$	26,009		$	25,097
Accretion	1,663			1,572
Additions	180			149
Retirements	(826		)	(809		)
Balance at period end	$	27,026		$	26,009

Schedule of Future Accretion [Table Text Block]

Accretion for the next five years is estimated to be as follows:

(Thousands)
Fiscal Year Ended September 30,	Estimated Accretion
2012		$	1,754
2013		1,849
2014		1,931
2015		1,991
2016		2,051
Total		$	9,576