Allocation of Purchase Price of Assets Acquired and Liabilities Assumed (Detail)) - USD ($) $ in Thousands	Jun. 30, 2016	Mar. 31, 2016	Feb. 29, 2016	Jun. 30, 2015	Jun. 30, 2014
Assets
Goodwill	$ 233,755			$ 195,894	$ 196,145
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