Employee Stock Ownership and 401(k) Plan: Schedule of Shares held by the ESOP (Details) - shares shares in Thousands	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2015
Retirement Benefits [Abstract]
Unallocated shares (shares)	52,905	88,171	123,436
Shares released for allocation (shares)	489,665	535,927	554,745
Total ESOP shares (shares)	542,570	624,098	678,181

No definition available.

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- Definition

The shares or units in an ESOP trust that have been assigned to individual participant accounts based on a known formula. IRS rules require allocations to be nondiscriminatory generally based on compensation, length of service, or a combination of both. For any particular participant such shares or units may be vested, unvested, or partially vested.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 40
-Section 50
-Paragraph 1
-Subparagraph (d)
-URI http://asc.fasb.org/extlink&oid=65895303&loc=d3e17540-113929

+ Details

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- Definition

Shares contributed to the ESOP that have not yet been released, committed to be released, or allocated to participant accounts. Suspense shares generally collateralize ESOP debt.

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+ Details

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- Definition

Sum of the allocated, committed-to-be-released and suspense shares of the entity held by the plan.

+ References

+ Details

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