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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, 2018	Jun. 30, 2018
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Fair Value	$ 546	$ 48
Loans one- to four-family [Member]
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Fair Value	$ 198	$ 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 Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Range (Weighted Average)	(11.60%)	20.70%
Loans one- to four-family [Member] | Maximum [Member]
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Range (Weighted Average)	2.40%	(38.50%)
Loans one- to four-family [Member] | Weighted Average [Member]
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Range (Weighted Average)	(3.20%)	(27.80%)
One- to four-family [Member]
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Fair Value	$ 234	$ 5
One- to four-family [Member] | Foreclosed and repossessed assets: [Member]
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Fair Value	$ 234	$ 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] | Foreclosed and repossessed assets: [Member] | Minimum [Member]
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Range (Weighted Average)	28.50%	0.00%
One- to four-family [Member] | Foreclosed and repossessed assets: [Member] | Maximum [Member]
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Range (Weighted Average)	45.80%	0.00%
One- to four-family [Member] | Foreclosed and repossessed assets: [Member] | Weighted Average [Member]
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Range (Weighted Average)	39.90%	0.00%
Land [Member]
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Fair Value		$ 79

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Description of where the gains (losses) for the period arising from assets and liabilities measured at fair value on a recurring basis using unobservable inputs (Level 3) are included in other comprehensive income.

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)(1a)
-URI http://asc.fasb.org/extlink&oid=99377789&loc=d3e19207-110258

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