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Long Term Retention Plan (Additional Information) (Details) - 6 months ended Jun. 30, 2015 - Long Term Retention Plan 2015 [Member] - $ / shares | Total
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Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
Percent of bonus for fixed payments | 8.333%
Period of fixed payments from long term retention plan | 6 years
Stock price per share, average closing price | $ 127.29
Long term retention plan, number of trading days | 60 days
Covered termination period | 120 days
Percent of award payment paid after change in control | 50.00%

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- Definition Covered Termination Period + 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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- Details
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