Fair Value Measurements and Fair Value of Financial Instruments, Fair Value Inputs, Assets, Quantitative Information (Details) $ in Thousands		Mar. 31, 2019 USD ($)	Jun. 30, 2018 USD ($)
Nonrecurring [Member]
Additional Quantitative Information about Assets Measured at Fair Value [Abstract]
Impaired loans		$ 2,114	$ 2,317
Foreclosed real estate		54	119
Level 3 [Member] | Appraisal of Collateral [Member]
Additional Quantitative Information about Assets Measured at Fair Value [Abstract]
Impaired loans	[1]	1,468	1,687
Foreclosed real estate	[1]	54	119
Level 3 [Member] | Discounted Cash Flow [Member]
Additional Quantitative Information about Assets Measured at Fair Value [Abstract]
Impaired loans	[1]	646	630
Level 3 [Member] | Nonrecurring [Member]
Additional Quantitative Information about Assets Measured at Fair Value [Abstract]
Impaired loans		2,114	2,317
Foreclosed real estate		$ 54	$ 119
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]	0.0300	0.2658
Foreclosed real estate, measurement input	[1],[2]	0.0000	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]	0.3100	0.3100
Foreclosed real estate, measurement input	[1],[2]	0.0000	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]	0.2584	0.2817
Foreclosed real estate, measurement input	[1],[2]	0.0000	0.0000
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]	0.0414	0.0414
Foreclosed real estate, measurement input	[1],[3]	0.0996	0.0899
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]	0.0582	0.0726
Foreclosed real estate, measurement input	[1],[3]	0.0996	0.1178
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]	0.0445	0.0507
Foreclosed real estate, measurement input	[1],[3]	0.0996	0.0992
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		0.0866	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		0.0607	0.0536

[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.