Stock-Based Compensation, Stock Option Plan (Details) - 2008 Stock Option Plan [Member] - Stock Option [Member] - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		9 Months Ended
	Mar. 31, 2017	Mar. 31, 2016	Mar. 31, 2017	Mar. 31, 2016
Stock option activity, shares [Roll Forward]
Outstanding at beginning of year (in shares)			64,770	95,670
Exercised (in shares)	0		(27,000)	(29,700)
Outstanding at period end (in shares)	37,770	65,970	37,770	65,970
Exercisable at period end (in shares)	37,770	65,970	37,770	65,970
Stock option activity, weighted average exercise price per share [Abstract]
Outstanding at beginning of year (in dollars per share)			$ 6.25	$ 6.25
Exercised (in dollars per share)			6.25	6.25
Outstanding at period end (in dollars per share)	$ 6.25	$ 6.25	6.25	6.25
Exercisable at period end (in dollars per share)	$ 6.25	$ 6.25	$ 6.25	$ 6.25
Total intrinsic value of options exercised	$ 0	$ 210	$ 339	$ 325
Options granted (in shares)			0	0