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Significant Accounting Policies and Practices and Recent Accounting Pronouncements - Overhead Reimbursement Fees (Details) - USD ($) $ in Millions	12 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2013
HGI Energy Holdings, LLC | Compass
Subsidiary or Equity Method Investee [Line Items]
Results of Operations, General and Administrative Related to Oil and Gas Producing Activities	$ 9.9	$ 7.5	$ 4.3

X

- Definition

General and administrative costs from oil & gas producing activities.

+ References

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



-Publisher FASB



-Name Accounting Standards Codification



-Topic 932



-SubTopic 235



-Section 50



-Paragraph 23



-URI http://asc.fasb.org/extlink&oid=51678428&loc=d3e62136-109447



Reference 2: http://www.xbrl.org/2003/role/presentationRef



-Publisher FASB



-Name Accounting Standards Codification



-Topic 932



-SubTopic 235



-Section 50



-Paragraph 26



-URI http://asc.fasb.org/extlink&oid=51678428&loc=d3e62299-109447

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+ References

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