Stock-Based Compensation (Details)		12 Months Ended
	Mar. 15, 2016	Jun. 30, 2016 USD ($) Plan $ / shares shares	Jun. 30, 2015 USD ($) $ / shares shares	Dec. 31, 2008 $ / shares shares
Share-based compensation arrangement by share-based payment award [Line Items]
Number of stock-based compensation plans | Plan		2
Stock split ratio	2	2
Stock option activity, weighted average exercise price per share [Abstract]
Options exercises in period, intrinsic value | $		$ 339,000	$ 182,000
Options granted (in shares)		0	0
Stock Option [Member]
Stock option activity, shares [Roll Forward]
Outstanding at beginning of year (in shares)		95,670	118,870
Exercised (in shares)		(30,900)	(23,200)
Outstanding at year end (in shares)		64,770	95,670
Exercisable at year end (in shares)		64,770	95,670
Stock option activity, weighted average exercise price per share [Abstract]
Outstanding at beginning of year (in dollars per share) | $ / shares		$ 6.25	$ 6.25
Exercised (in dollars per share) | $ / shares		6.25	6.25
Outstanding at year end (in dollars per share) | $ / shares		6.25	6.25
Exercisable at year end (in dollars per share) | $ / shares		$ 6.25	$ 6.25
2008 Stock Option Plan [Member]
Share-based compensation arrangement by share-based payment award [Line Items]
Number of shares authorized under the plan (in shares)		360,000
Options, exercise price (in dollars per share) | $ / shares				$ 6.25
Options, expected term				10 years
Award vesting period				3 years
Stock option activity, weighted average exercise price per share [Abstract]
Employee service share-based compensation, nonvested awards, compensation cost not yet recognized | $		$ 0	$ 0
Options granted (in shares)				329,000