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Summary of Segment Net Revenues, Segment Operating income (Loss) and Reconciliation of Segment Income to Consolidated Income Before Income Taxes (Detail) (Parenthetical) (Detail) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2016 | Sep. 30, 2015 | Sep. 30, 2016 | Sep. 30, 2015
Segment Reporting Information [Line Items] |  |  |  |  |
Corporate administrative support costs, Adjustment to reduce receivable | [1] | $ 28,028 | $ 4,975 | $ 40,366 | $ 14,534
Tax Adjustments |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Corporate administrative support costs, Adjustment to reduce receivable |  |  |  | $ 27,040 |
[1] | Corporate administrative support costs also include $27,040 of an adjustment to reduce a receivable associated with the DMG acquisition escrow provision relating to an income tax item.

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- Definition Amount of general and administrative support costs, such as labor, benefits and stock-based compensation costs. + References No definition available. + Details
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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Balance Type: | na
Period Type: | duration

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- Details
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Namespace Prefix: |
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Period Type: |