Restructuring Plan - Additional Information (Detail) $ in Thousands	12 Months Ended
	Jun. 30, 2018 USD ($) position	Jun. 30, 2017 USD ($) position	Jun. 30, 2016 USD ($)
Restructuring Cost and Reserve [Line Items]
Restructuring and other charges	$ 3,159	$ 1,952	$ 1,240
Number of positions eliminated | position	38
Other Restructuring Costs		1,042
2014 Plan Member]
Restructuring Cost and Reserve [Line Items]
Severance costs		$ 910
Number of positions eliminated | position		33