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Stock-Based Compensation Plans - Additional Information 3 (Detail) (USD $) In Thousands, except Share data in Millions, unless otherwise specified | 3 Months Ended
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Mar. 31, 2014 | Mar. 31, 2013
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |
Non-cash, Mark-to-market income (loss) related to deferred compensation plan | $ 2,035 | $ (42,360)
Shares held in rabbi trust total | 2.8 | 2.8
Vested shares held in rabbi trust | 2.4 | 2.4

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- Definition Non cash mark to market (income) loss related to deferred compensation plan. + References No definition available. + Details
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- Definition Shares held in rabbi trust. + References No definition available. + Details
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- Definition Vested shares held in rabbi trust. + References No definition available. + Details
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- Details
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