Restructuring Plan - Additional Information (Detail)	12 Months Ended
	Jun. 30, 2017 USD ($) position	Jun. 30, 2016 USD ($)	Jun. 30, 2015 USD ($) position
Restructuring Cost and Reserve [Line Items]
Restructuring and other charges	$ 1,952,000	$ 1,240,000	$ 3,175,000
Number of positions eliminated | position			16
Other Restructuring Costs	1,042
2014 Plan Member]
Restructuring Cost and Reserve [Line Items]
Severance costs	$ 910
Number of positions eliminated | position	33