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Derivative and Other Financial Instruments with Off-Balance Sheet Risks: Off-Balance-Sheet Credit Exposure, Policy (Details) - USD ($) $ in Thousands | Sep. 30, 2017 | Jun. 30, 2017 | Jun. 30, 2016
--- | --- | --- | ---
Derivative [Line Items] |  |  |
Commitments to Extend Credit | $ 8,189 | $ 9,015 |
Loans Held for Investment and Loans Held for Sale [Member] |  |  |
Derivative [Line Items] |  |  |
Commitments to Extend Credit | $ 96,300 |  | $ 111,800

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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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- Definition Amount of undisbursed portion of the loan receivable balance (loans in process). Excludes loans and leases covered under loss sharing agreements. + References No definition available. + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- Details
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Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |