Fair Value Measurements and Fair Value of Financial Instruments, Fair Value Inputs, Assets, Quantitative Information (Details) $ in Thousands		Mar. 31, 2020 USD ($)	Jun. 30, 2019 USD ($)
Nonrecurring [Member]
Additional Quantitative Information about Assets Measured at Fair Value [Abstract]
Impaired loans		$ 1,711	$ 2,073
Foreclosed real estate			53
Level 3 [Member] | Appraisal of Collateral [Member]
Additional Quantitative Information about Assets Measured at Fair Value [Abstract]
Impaired loans	[1]	1,193	1,403
Foreclosed real estate	[1]		53
Level 3 [Member] | Discounted Cash Flow [Member]
Additional Quantitative Information about Assets Measured at Fair Value [Abstract]
Impaired loans	[1]	518	670
Level 3 [Member] | Nonrecurring [Member]
Additional Quantitative Information about Assets Measured at Fair Value [Abstract]
Impaired loans		$ 1,711	2,073
Foreclosed real estate			$ 53
Level 3 [Member] | Appraisal Adjustments [Member] | Appraisal of Collateral [Member] | Minimum [Member]
Additional Quantitative Information about Assets Measured at Fair Value [Abstract]
Impaired loans, measurement input	[1],[2]	0.0857	0.0000
Foreclosed real estate, measurement input	[1],[2]		0.0000
Level 3 [Member] | Appraisal Adjustments [Member] | Appraisal of Collateral [Member] | Maximum [Member]
Additional Quantitative Information about Assets Measured at Fair Value [Abstract]
Impaired loans, measurement input	[1],[2]	0.3373	0.3373
Foreclosed real estate, measurement input	[1],[2]		0.0000
Level 3 [Member] | Appraisal Adjustments [Member] | Appraisal of Collateral [Member] | Weighted Average [Member]
Additional Quantitative Information about Assets Measured at Fair Value [Abstract]
Impaired loans, measurement input	[1],[2]	0.2800	0.2448
Foreclosed real estate, measurement input	[1],[2]		0.0000
Level 3 [Member] | Liquidation Expenses [Member] | Appraisal of Collateral [Member]
Additional Quantitative Information about Assets Measured at Fair Value [Abstract]
Foreclosed real estate, measurement input	[1],[3]		0.1041
Level 3 [Member] | Liquidation Expenses [Member] | Appraisal of Collateral [Member] | Minimum [Member]
Additional Quantitative Information about Assets Measured at Fair Value [Abstract]
Impaired loans, measurement input	[1],[3]	0.0398	0.0398
Level 3 [Member] | Liquidation Expenses [Member] | Appraisal of Collateral [Member] | Maximum [Member]
Additional Quantitative Information about Assets Measured at Fair Value [Abstract]
Impaired loans, measurement input	[1],[3]	0.0703	0.0600
Level 3 [Member] | Liquidation Expenses [Member] | Appraisal of Collateral [Member] | Weighted Average [Member]
Additional Quantitative Information about Assets Measured at Fair Value [Abstract]
Impaired loans, measurement input	[1],[3]	0.0485	0.0453
Foreclosed real estate, measurement input	[1],[3]		0.1041
Level 3 [Member] | Discount Rate [Member] | Discounted Cash Flow [Member] | Minimum [Member]
Additional Quantitative Information about Assets Measured at Fair Value [Abstract]
Impaired loans, measurement input		0.0419	0.0419
Level 3 [Member] | Discount Rate [Member] | Discounted Cash Flow [Member] | Maximum [Member]
Additional Quantitative Information about Assets Measured at Fair Value [Abstract]
Impaired loans, measurement input		0.0675	0.0866
Level 3 [Member] | Discount Rate [Member] | Discounted Cash Flow [Member] | Weighted Average [Member]
Additional Quantitative Information about Assets Measured at Fair Value [Abstract]
Impaired loans, measurement input		0.0552	0.0607

[1] Fair value is generally determined through independent third-party appraisals of the underlying collateral, which generally includes various Level 3 inputs which are not observable.

[2] Appraisals may be adjusted downwards by management for qualitative factors such as economic conditions. Higher downward adjustments are caused by negative changes to the collateral or conditions in the real estate market, actual offers or sales contracts received or age of the appraisal.

[3] Appraisals are adjusted downwards by management for qualitative factors such as the estimated costs to liquidate the collateral.