Borrowings (Narrative) (Details) - USD ($)	12 Months Ended
Jun. 30, 2019	Jun. 30, 2018
Federal Home Loan Bank, Advances, Branch of FHLB Bank [Line Items]
Federal Home Loan Bank stock, cash dividends distributed	$ 707,000	$ 568,000
Purchase of FHLB - San Francisco stock		91,000
Advances, Federal Funds Facility with Correspondent Bank	17,000,000	17,000,000
Federal Home Loan Bank stock, cash dividends include amount of special cash dividend	133,000
San Francisco advances
Federal Home Loan Bank, Advances, Branch of FHLB Bank [Line Items]
Federal Home Loan Bank advances, limit on borrowing capacity, amount	391,800,000	411,800,000
Federal Home Loan Bank advances, unused borrowing facility	275,200,000	275,100,000
Federal Home Loan Bank advances, available collateral	434,700,000	500,300,000
FHLB - San Francisco advances	101,107,000	126,163,000
Outstanding letters of credit	13,000,000	8,000,000
Federal Home Loan Bank stock, required investment	8,200,000	8,200,000
Federal Home Loan Bank stock, excess investment	470,000	0
San Francisco advances \| Discount window facility
Federal Home Loan Bank, Advances, Branch of FHLB Bank [Line Items]
FHLB - San Francisco advances	74,200,000	73,200,000
San Francisco advances \| MPF credit enhancement
Federal Home Loan Bank, Advances, Branch of FHLB Bank [Line Items]
FHLB - San Francisco advances	$ 2,500,000	2,500,000
San Francisco advances \| Maximum
Federal Home Loan Bank, Advances, Branch of FHLB Bank [Line Items]
Federal Home Loan Bank advances, limit on borrowing capacity (percent of total assets)	35.00%
San Francisco advances \| Real estate loans
Federal Home Loan Bank, Advances, Branch of FHLB Bank [Line Items]
Collateral pledged on Federal Home Loan Bank advances	$ 643,000,000	746,700,000
San Francisco advances \| Investment securities
Federal Home Loan Bank, Advances, Branch of FHLB Bank [Line Items]
Collateral pledged on Federal Home Loan Bank advances	3,200,000	3,300,000
San Francisco advances \| Investment securities \| Discount window facility
Federal Home Loan Bank, Advances, Branch of FHLB Bank [Line Items]
Collateral pledged on Federal Home Loan Bank advances	$ 79,000,000	$ 77,900,000

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Federal Home Loan Bank, Advances, General Debt Obligations, Amount of Available, Unused Collateral

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Federal Home Loan Bank, Advances, Limitation on Borrowing Capacity, Amount

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Federal Home Loan Bank, Advances, Limitation on Borrowing Capacity, Percent

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Federal Home Loan Bank Stock, Cash Dividends

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Represents cash dividends received by the Bank includes special cash dividend.

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Federal Home Loan Bank Stock, Excess Investment

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Federal Home Loan Bank Stock, Required Investment

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Amount of borrowings as of the balance sheet date from the Federal Home Loan Bank, which are primarily used to cover shortages in the required reserve balance and liquidity shortages.

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-SubTopic 470
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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.

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Amount of advances or credit lines available from the Federal Home Loan Bank (FHLB).

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Amount of the collateral pledged in support of federal home loan bank advances outstanding.

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The total amount of the contingent obligation under letters of credit outstanding as of the reporting date.

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Amount of cash outflow to acquire Federal Home Loan Bank (FHLB) stock.

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