Stock-Based Compensation (Details)	3 Months Ended
	Sep. 30, 2015 Plan $ / shares shares	Sep. 30, 2014 $ / shares shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of stock-based compensation plans | Plan	2
Stock option activity, shares [Roll Forward]
Options granted (in shares)	0	0
Stock Option Plan [Member]
Stock option activity, shares [Roll Forward]
Outstanding at beginning of year (in shares)	47,835	59,435
Exercised (in shares)	(2,100)	(3,100)
Outstanding at period end (in shares)	45,735	56,335
Exercisable at period end (in shares)	45,735	56,335
Stock option activity, weighted average exercise price per share [Abstract]
Outstanding at beginning of year (in dollars per share) | $ / shares	$ 12.50	$ 12.50
Exercised (in dollars per share) | $ / shares	12.50	12.50
Outstanding at period end (in dollars per share) | $ / shares	12.50	12.50
Exercisable at period end (in dollars per share) | $ / shares	$ 12.50	$ 12.50