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Disclosures About Fair Value of Assets and Liabilities (Details 2) - USD ($) $ in Thousands	9 Months Ended	12 Months Ended
	Mar. 31, 2019	Jun. 30, 2018
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Fair Value	$ 547	$ 48
Loans one- to four-family [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Fair Value	$ 480	$ 513
Valuation Technique(s)	Sales comparison approach	Sales comparison approach
Unobservable Input(s)	Adjustments for differences between comparable sales	Adjustments for differences between comparable sales
Loans one- to four-family [Member] | Minimum [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Range (Weighted Average)	(50.60%)	(38.50%)
Loans one- to four-family [Member] | Maximum [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Range (Weighted Average)	25.30%	20.70%
Loans one- to four-family [Member] | Weighted Average [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Range (Weighted Average)	(1.70%)	(27.80%)
One- to four-family [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Fair Value	$ 288	$ 5
One- to four-family [Member] | Foreclosed and repossessed assets: [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Fair Value	$ 288	$ 5
Valuation Technique(s)	Sales comparison approach	Sales comparison approach
Unobservable Input(s)	Adjustments for differences between comparable sales	Adjustments for differences between comparable sales
One- to four-family [Member] | Minimum [Member] | Foreclosed and repossessed assets: [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Range (Weighted Average)	6.07%	0.00%
One- to four-family [Member] | Maximum [Member] | Foreclosed and repossessed assets: [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Range (Weighted Average)	31.00%	0.00%
One- to four-family [Member] | Weighted Average [Member] | Foreclosed and repossessed assets: [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Range (Weighted Average)	(14.50%)	0.00%

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Amount of investment in debt and equity securities categorized neither as held-to-maturity nor trading.

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