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Schedule of Share-based Compensation Expense (Parenthetical) (Detail) - USD ($) | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2014 | Sep. 30, 2014 | Jun. 30, 2014 | Dec. 31, 2015 | Dec. 31, 2014 | Dec. 31, 2013
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items] |  |  |  |  |  |
Special charges | $ 1,628,000 | $ 5,347,000 | $ 9,364,000 | $ 0 | $ 16,339,000 | $ 38,414,000
Equity award expense acceleration |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items] |  |  |  |  |  |
Special charges |  |  |  |  | 200,000 |
Share based awards, value of shares forfeited |  |  |  |  | 1,200,000 |
Option expense acceleration |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items] |  |  |  |  |  |
Special charges |  |  |  |  | 100,000 |
Options, value of shares forfeited |  |  |  |  | $ 200,000 |

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- Definition The charge against earnings in the period, comprised of costs associated with non-recurring activities related to our global branding strategy and other strategic branding decisions, a realignment of our workforce and consolidation of office locations. + References No definition available. + Details
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