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Disclosures About Fair Value of Assets and Liabilities (Details 2) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Sep. 30, 2019	Jun. 30, 2019
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Fair Value	$ 1,046	$ 1,045
Loans one- to four-family [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Fair Value	$ 9	$ 593
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)	82.20%	25.30%
Loans one- to four-family [Member] | Maximum [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Range (Weighted Average)	151.30%	50.60%
Loans one- to four-family [Member] | Weighted Average [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Range (Weighted Average)	(20.50%)	(0.60%)
Residential Real Estate One To Four Family [Member] | Foreclosed and repossessed assets: [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Fair Value		$ 117
Valuation Technique(s)		Sales comparison approach
Unobservable Input(s)		Adjustments for differences between comparable sales
Residential Real Estate One To Four Family [Member] | Minimum [Member] | Foreclosed and repossessed assets: [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Range (Weighted Average)		8.60%
Residential Real Estate 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%
Residential Real Estate 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)		(29.00%)

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

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