Fair Value Measurements and Fair Value of Financial Instruments, Fair Value Inputs, Assets, Quantitative Information (Details) $ in Thousands		Sep. 30, 2020 USD ($)	Jun. 30, 2020 USD ($)
Nonrecurring [Member]
Additional Quantitative Information about Assets Measured at Fair Value [Abstract]
Impaired loans		$ 1,841	$ 1,581
Level 3 [Member] | Appraisal of Collateral [Member]
Additional Quantitative Information about Assets Measured at Fair Value [Abstract]
Impaired loans	[1]	1,407	1,143
Level 3 [Member] | Discounted Cash Flow [Member]
Additional Quantitative Information about Assets Measured at Fair Value [Abstract]
Impaired loans	[1]	434	438
Level 3 [Member] | Nonrecurring [Member]
Additional Quantitative Information about Assets Measured at Fair Value [Abstract]
Impaired loans		$ 1,841	$ 1,581
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	0.0857
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
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]	0.2683	0.2755
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]	0.0549	0.0688
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]	0.0438	0.0464
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		0.0663	0.0663
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		0.0564	0.0564

[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.