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Acquisitions and Dispositions - Summary of Purchase Price (Detail) - USD ($) $ in Thousands		12 Months Ended
	Apr. 29, 2016	Dec. 31, 2016
Acquisition Date [Line Items]
Total purchase price, net of cash and cash equivalents acquired		$ 939,591
Newport [Member]
Acquisition Date [Line Items]
Cash paid for outstanding shares	$ 905,254
Settlement of share-based compensation awards	8,824
Cash paid for Newport debt	93,200
Total purchase price	1,007,278
Less: cash and cash equivalents acquired	(61,463)
Total purchase price, net of cash and cash equivalents acquired	$ 945,815

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Amount of consideration transferred, consisting of acquisition-date fair value of assets transferred by the acquirer, liabilities incurred by the acquirer, and equity interest issued by the acquirer.

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The cash inflow associated with the acquisition of business during the period (for example, cash that was held by the acquired business).

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