Income Taxes, Effective Tax Rate Reconciliation (Details)	12 Months Ended
	Jun. 30, 2015	Jun. 30, 2014
Income Taxes [Abstract]
Tax based on federal statutory rate (in hundredths)	34.00%	34.00%
State income taxes, net of federal benefit (in hundredths)	0.50%	1.02%
Tax-exempt income (in hundredths)	(8.75%)	(7.97%)
Other, net (in hundredths)	(1.39%)	0.94%
Total income tax expense (in hundredths)	24.36%	27.99%