Purchase Price at the Date of Acquisition (Detail) - USD ($) $ in Thousands	1 Months Ended		12 Months Ended
	Jun. 30, 2017	Feb. 29, 2016	Jun. 30, 2017	Jun. 30, 2016
Business Acquisition [Line Items]
Net cash paid at acquisition			$ 40,015	$ 122,157
Integrated Photonics, Inc
Business Acquisition [Line Items]
Net cash paid at acquisition	$ 39,436
Cash paid for working capital adjustment	700
Fair value of cash earnout arrangement	2,250
Purchase price	$ 41,686
EpiWorks
Business Acquisition [Line Items]
Net cash paid at acquisition		$ 42,981
Cash paid for working capital adjustment		163
Fair value of cash earnout arrangement		4,352
Purchase price		$ 47,496