Postretirement and Other Employee Benefits - Components of Net Periodic Pension Costs for the Swiss Pension Plan (Detail) - Switzerland - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Mar. 31, 2020	Mar. 31, 2019	Mar. 31, 2020	Mar. 31, 2019
Components of net periodic cost
Service cost	$ 749	$ 625	$ 2,202	$ 1,900
Interest cost	57	113	169	343
Prior service credit	(79)	(76)	(233)	(231)
Net actuarial loss	122	54	359	164
Expected return on plan assets	(317)	(342)	(933)	(1,040)
Net periodic cost	$ 532	$ 374	$ 1,564	$ 1,136