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Fair Value Measurements: Fair Value Measurements, Nonrecurring, Valuation Techniques (Details) - Fair Value, Inputs, Level 3 - USD ($) $ in Thousands	Dec. 31, 2017	Sep. 30, 2017
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Assets, estimated fair value, nonrecurring	$ 5,765	$ 5,987
Impaired loans
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Assets, estimated fair value, nonrecurring	2,878	2,686
Nonrecurring | Impaired loans | Market Approach Valuation Technique
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Assets, estimated fair value, nonrecurring	2,878	2,686
Nonrecurring | OREO and other repossessed assets | Market Approach Valuation Technique
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Assets, estimated fair value, nonrecurring	$ 2,887	$ 3,301

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- Definition

This element represents the aggregate of the assets reported on the balance sheet at period end measured at fair value on a nonrecurring basis by the entity. This element is intended to be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements.

+ References

No definition available.

+ Details

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

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