Stock-Based Compensation - Summary of Stock Option Activity (Details) (USD $)	6 Months Ended
	Dec. 31, 2014	Dec. 31, 2013
Stock-Based Compensation [Abstract]
Outstanding at beginning of year (in shares)	59,435	87,400
Exercised (in shares)	(5,100)	(22,779)
Outstanding at end of year (in shares)	54,335	64,621
Exercisable at end of year (in shares)	54,335	64,621
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
Exercisable at end of year, Weighted Average Exercise Price Per Share (in dollars per share)	$ 12.50	$ 12.50