Allocation of Final Purchase Price (Detail) - USD ($) $ in Thousands	Oct. 04, 2015	Jun. 11, 2015	Dec. 31, 2014	Oct. 31, 2014
Business Acquisition [Line Items]
Goodwill	$ 498,346		$ 273,438
Avionics Interface Technologies, LLC
Business Acquisition [Line Items]
Goodwill				$ 10,516
Intangible assets				9,080
Current assets				2,452
Non-current assets				359
Accounts payable and current liabilities				(1,164)
Total purchase price				$ 21,243
Universal Robots
Business Acquisition [Line Items]
Goodwill		$ 227,021
Intangible assets		119,950
Current assets		10,853
Non-current assets		3,415
Accounts payable and current liabilities		(11,973)
Long-term deferred tax liabilities		(25,736)
Long-term other liabilities		(5,844)
Total purchase price		$ 317,686