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Commitments and Contingencies (Detail Textuals) (USD $) In Thousands, unless otherwise specified	1 Months Ended	3 Months Ended	12 Months Ended
	Sep. 30, 2012 Party	Sep. 30, 2014 Current And Long term Liabilities	Jun. 30, 2014 Current And Long term Liabilities
Commitments And Contingencies [Line Items]
Number of potentially responsible parties	140
Accrual for environmental loss contingencies payments		$ 7,044	$ 7,273

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- Definition

Represents number of parties.

+ References

No definition available.

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- Definition

The aggregate amount disbursed during the reporting period to settle environmental loss contingencies.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 450

-SubTopic 20

-Section S99

-Paragraph 1

-Subparagraph (SAB TOPIC 5.Y.Q2)

-URI http://asc.fasb.org/extlink&oid=27011672&loc=d3e149879-122751

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