Loans Receivable (Details 7) - USD ($) $ in Thousands	Dec. 31, 2019	Jun. 30, 2019
Financing Receivable, Credit Quality Indicator [Line Items]
Loans receivable, gross	$ 283,015	$ 282,425
Automobile [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loans receivable, gross	83	91
Farm [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loans receivable, gross	2,087	3,157
Loans on deposits [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loans receivable, gross	1,372	1,415
Home equity [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loans receivable, gross	7,653	8,214
Unsecured [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loans receivable, gross	666	451
Pass [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loans receivable, gross	271,585	269,768
Pass [Member] | Automobile [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loans receivable, gross	83	91
Pass [Member] | Commercial nonmortgage [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loans receivable, gross	1,267	1,584
Pass [Member] | Farm [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loans receivable, gross	1,777	2,848
Pass [Member] | Loans on deposits [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loans receivable, gross	1,372	1,415
Pass [Member] | Home equity [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loans receivable, gross	7,634	8,053
Pass [Member] | Unsecured [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loans receivable, gross	661	446
Doubtful [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loans receivable, gross
Doubtful [Member] | Automobile [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loans receivable, gross
Doubtful [Member] | Commercial nonmortgage [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loans receivable, gross
Doubtful [Member] | Farm [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loans receivable, gross
Doubtful [Member] | Loans on deposits [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loans receivable, gross
Doubtful [Member] | Home equity [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loans receivable, gross
Doubtful [Member] | Unsecured [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loans receivable, gross
Substandard [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loans receivable, gross	10,075	10,880
Substandard [Member] | Automobile [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loans receivable, gross
Substandard [Member] | Commercial nonmortgage [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loans receivable, gross	235	491
Substandard [Member] | Farm [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loans receivable, gross	310	309
Substandard [Member] | Loans on deposits [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loans receivable, gross
Substandard [Member] | Home equity [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loans receivable, gross	19	24
Substandard [Member] | Unsecured [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loans receivable, gross	5	5
Special Mention [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loans receivable, gross	1,355	1,777
Special Mention [Member] | Automobile [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loans receivable, gross
Special Mention [Member] | Commercial nonmortgage [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loans receivable, gross
Special Mention [Member] | Farm [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loans receivable, gross
Special Mention [Member] | Loans on deposits [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loans receivable, gross
Special Mention [Member] | Home equity [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loans receivable, gross		137
Special Mention [Member] | Unsecured [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loans receivable, gross
Not rated [Member] | Farm [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loans receivable, gross
One-to four-family residential real estate [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loans receivable, gross	220,496	216,066
One-to four-family residential real estate [Member] | Pass [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loans receivable, gross	212,106	206,489
One-to four-family residential real estate [Member] | Doubtful [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loans receivable, gross
One-to four-family residential real estate [Member] | Substandard [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loans receivable, gross	7,771	8,683
One-to four-family residential real estate [Member] | Special Mention [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loans receivable, gross	619	894
Multi-family [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loans receivable, gross	12,626	15,928
Multi-family [Member] | Pass [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loans receivable, gross	11,944	15,243
Multi-family [Member] | Doubtful [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loans receivable, gross
Multi-family [Member] | Substandard [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loans receivable, gross	682	685
Multi-family [Member] | Special Mention [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loans receivable, gross
Construction [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loans receivable, gross	4,193	3,757
Construction [Member] | Pass [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loans receivable, gross	4,193	3,757
Construction [Member] | Doubtful [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loans receivable, gross
Construction [Member] | Substandard [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loans receivable, gross
Construction [Member] | Special Mention [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loans receivable, gross
Land [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loans receivable, gross	1,226	852
Land [Member] | Pass [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loans receivable, gross	1,226	852
Land [Member] | Doubtful [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loans receivable, gross
Land [Member] | Substandard [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loans receivable, gross
Land [Member] | Special Mention [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loans receivable, gross
Nonresidential real estate [Member] | Pass [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loans receivable, gross	29,322	28,990
Nonresidential real estate [Member] | Doubtful [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loans receivable, gross
Nonresidential real estate [Member] | Substandard [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loans receivable, gross	1,053	683
Nonresidential real estate [Member] | Special Mention [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loans receivable, gross	$ 736	$ 746