Earnings Per Share (Details Textual) - shares	12 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2015
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Document Period End Date	Jun. 30, 2017
Common stock, shares outstanding	32,849,563	32,792,497
Stock Options
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Common stock, shares outstanding	78,201	606,879	699,872
Restricted Stock Units
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Common stock, shares outstanding	349,430	304,816	262,943
Performance Shares
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Common stock, shares outstanding	318,584