ASSET RETIREMENT OBLIGATIONS (Tables)

12 Months Ended

Sep. 30, 2016

Asset Retirement Obligation Disclosure [Abstract]

Analysis of Change in ARO Liability

The following is an analysis of the change in the Company’s AROs for the fiscal year ended September 30:

(Thousands)	2016			2015
Balance at October 1	$	19,145		$	30,495
Accretion	1,206			2,262
Additions	3,111			2,185
Revisions in estimated cash flows	5,320			(14,763		)
Retirements	(403		)	(1,034		)
Balance at period end	$	28,379		$	19,145

Schedule of Future Accretion

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

(Thousands)
Fiscal Year Ended September 30,	Estimated Accretion
2017		$	1,552
2018		1,639
2019		1,712
2020		1,789
2021		1,870
Total		$	8,562