Operations by Segments and Geographic Areas - Schedule of Revenue Based on Point of Sale (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Mar. 31, 2020	Mar. 31, 2019	Mar. 31, 2020	Mar. 31, 2019
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues from unaffiliated customers	$ 111,715	$ 106,438	$ 331,582	$ 313,721
United States
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues from unaffiliated customers	69,164	66,227	207,566	194,132
United Kingdom
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues from unaffiliated customers	27,928	24,942	80,002	73,313
Switzerland
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues from unaffiliated customers	9,694	9,682	29,213	29,289
Other
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues from unaffiliated customers	$ 4,929	$ 5,587	$ 14,801	$ 16,987