Allocation of Purchase Price of Assets Acquired and Liabilities Assumed (Detail)) - USD ($) $ in Thousands	Jun. 30, 2017	Jun. 30, 2016	Mar. 31, 2016	Feb. 29, 2016	Jun. 30, 2015
Assets
Goodwill	$ 250,342	$ 233,755			$ 195,894
Integrated Photonics, Inc
Assets
Accounts receivable	2,083
Inventories	3,968
Prepaid and other assets	322
Property, plant & equipment	11,257
Intangible assets	22,213
Goodwill	17,107
Total assets acquired	56,950
Liabilities
Accounts payable	846
Other accrued liabilities	1,032
Long-term debt assumed	3,834
Deferred tax liabilities	9,552
Total liabilities assumed	15,264
Net assets acquired	$ 41,686
EpiWorks
Assets
Accounts receivable				$ 2,121
Inventories				2,435
Prepaid and other assets				68
Property, plant & equipment				9,043
Intangible assets				14,124
Goodwill				27,588
Total assets acquired				55,379
Liabilities
Accounts payable				605
Other accrued liabilities				859
Deferred tax liabilities				6,419
Total liabilities assumed				7,883
Net assets acquired				$ 47,496
ANADIGICS
Assets
Accounts receivable			$ 3,973
Inventories			8,322
Prepaid and other assets			2,347
Property, plant & equipment			25,810
Intangible assets			1,060
Goodwill			48,312
Total assets acquired			89,824
Liabilities
Accounts payable			3,586
Other accrued liabilities			7,226
Total liabilities assumed			10,812
Net assets acquired			$ 79,012