Stock-Based Compensation (Details) (USD $)	9 Months Ended
	Mar. 31, 2015 Plan	Mar. 31, 2014
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of stock-based compensation plans	2
Number of Shares [Roll Forward]
Options granted (in shares)	0	0
Stock Option Plan [Member]
Number of Shares [Roll Forward]
Outstanding at beginning of year (in shares)	59,435	87,400
Exercised (in shares)	(8,600)	(27,965)
Outstanding at period end (in shares)	50,835	59,435
Exercisable at period end (in shares)	50,835	59,435
Weighted Average Exercise Price [Abstract]
Outstanding at beginning of year, Weighted Average Exercise Price Per Share (in dollars per share)	12.50	12.50
Exercised, Weighted Average Exercise Price Per Share (in dollars per share)	12.50	12.50
Outstanding at period end, Weighted Average Exercise Price Per Share (in dollars per share)	12.50	12.50
Exercisable at period end, Weighted Average Exercise Price Per Share (in dollars per share)	12.50	12.50