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Recently Issued Accounting Pronouncements (Details) - USD ($) $ in Millions | 12 Months Ended |
--- | --- | ---
Dec. 31, 2017 | Jan. 01, 2018
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |
Effective income tax rate reconciliation, share-based compensation, pro forma excess tax benefit | $ 0.7 |
Forecast | Accounting Standards Update 2014-09 |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |
Cumulative effect of new accounting principle in period of adoption |  | $ 3.0

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- Definition Effective Income Tax Rate Reconciliation, Share-based Compensation, Pro Forma Excess Tax Benefit, Amount + References No definition available. + Details
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- Definition Amount after tax of increase (decrease) to equity or (increase) decrease to net assets, resulting from the cumulative effect adjustment of a new accounting principle applied in the period of adoption. + References No definition available. + Details
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