Stock Options and Restricted Stock Awards - Stock Option Activity (Details)	9 Months Ended
	Mar. 31, 2017 $ / shares shares
Number of Options
Options outstanding, balance at beginning of period (in shares) | shares	606,879
Options exercised (in shares) | shares	(490,804)
Options expired (in shares) | shares	(9,381)
Options outstanding, balance at end of period (in shares) | shares	106,694
Weighted Average Exercise Price
Options outstanding at beginning of period (per share) | $ / shares	$ 10.14
Options exercised (per share) | $ / shares	10.40
Options expired (per share) | $ / shares	8.83
Options outstanding at end of period (per share) | $ / shares	$ 9.10