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Acquisitions and Dispositions - Schedule of Unaudited Pro Forma Financial Information (Detail) - Newport [Member] - USD ($) $ / shares in Units, $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2016 | Jun. 30, 2016
Business Acquisition [Line Items] |  |
Total net revenues | $ 358,483 | $ 687,650
Net income | $ 14,158 | $ 31,730
Net income per share: |  |
Basic | $ 0.26 | $ 0.59
Diluted | $ 0.26 | $ 0.59

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