Geographical Information of Revenue (Detail) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2015
Revenues From External Customers And Long Lived Assets [Line Items]
Revenues	$ 273,717	$ 244,987	$ 231,822	$ 221,520	$ 241,470	$ 205,105	$ 191,434	$ 189,207	$ 972,046	$ 827,216	$ 741,961
United States
Revenues From External Customers And Long Lived Assets [Line Items]
Revenues									294,200	266,347	241,974
China
Revenues From External Customers And Long Lived Assets [Line Items]
Revenues									208,595	172,292	140,586
Hong Kong
Revenues From External Customers And Long Lived Assets [Line Items]
Revenues									190,702	140,821	109,428
Germany
Revenues From External Customers And Long Lived Assets [Line Items]
Revenues									88,304	72,070	77,524
Japan
Revenues From External Customers And Long Lived Assets [Line Items]
Revenues									76,212	57,287	52,864
Switzerland
Revenues From External Customers And Long Lived Assets [Line Items]
Revenues									50,497	54,760	56,940
Vietnam
Revenues From External Customers And Long Lived Assets [Line Items]
Revenues									22,497	24,267	24,307
Italy
Revenues From External Customers And Long Lived Assets [Line Items]
Revenues									10,791	10,160	9,313
United Kingdom
Revenues From External Customers And Long Lived Assets [Line Items]
Revenues									8,473	8,154	7,749
Belgium
Revenues From External Customers And Long Lived Assets [Line Items]
Revenues									7,503	6,026	5,731
Korea
Revenues From External Customers And Long Lived Assets [Line Items]
Revenues									6,584	3,887
Singapore
Revenues From External Customers And Long Lived Assets [Line Items]
Revenues									3,913	3,039	3,897
Philippines
Revenues From External Customers And Long Lived Assets [Line Items]
Revenues									3,057	8,106	11,334
Taiwan
Revenues From External Customers And Long Lived Assets [Line Items]
Revenues									718
Australia
Revenues From External Customers And Long Lived Assets [Line Items]
Revenues											314
Total Non-United States
Revenues From External Customers And Long Lived Assets [Line Items]
Revenues									$ 677,846	$ 560,869	$ 499,987