Summary of Significant Accounting Policies (Details) $ in Thousands	12 Months Ended
	Jun. 30, 2017 USD ($) Office shares	Jun. 30, 2016 USD ($)
Nature of Operations [Abstract]
Number of offices | Office	13
Cash and Cash Equivalents [Abstract]
Interest-bearing deposits in banks and other financial institutions	$ 6,100	$ 6,000
Income Recognition on Impaired and Nonaccrual loans [Abstract]
Threshold period of delinquency after which a loan is placed on nonaccrual status	90 days
Treasury Stock [Abstract]
Total number of shares repurchased under the plan (in shares) | shares	124,956
Federal Home Loan Bank Stock [Abstract]
Other-than-temporary impairment charge	$ 0	0
Advertising [Abstract]
Advertising expense	$ 387	$ 373
Maximum [Member]
Treasury Stock [Abstract]
Number of shares authorized for repurchase (in shares) | shares	184,692
Building and Improvements [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, useful life	39 years
Furniture and Equipment [Member] | Minimum [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, useful life	3 years
Furniture and Equipment [Member] | Maximum [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, useful life	8 years