Stock-Based Compensation - Summary of Stock Option Activity (Details) (USD $)	3 Months Ended		6 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2013	Dec. 31, 2012
Stock-Based Compensation [Abstract]
Outstanding at beginning of year (in shares)			87,400	103,700
Options granted (in shares)	0	0	0	0
Exercised (in shares)			(22,779)	(3,000)
Outstanding at end of year (in shares)	64,621	100,700	64,621	100,700
Exercisable at end of year (in shares)	64,621	100,700	64,621	100,700
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 end of year, Weighted Average Exercise Price Per Share (in dollars per share)	$ 12.50	$ 12.50	$ 12.50	$ 12.50
Exercisable at end of year, Weighted Average Exercise Price Per Share (in dollars per share)	$ 12.50	$ 12.50	$ 12.50	$ 12.50