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Newly Adopted Accounting Pronouncements (Details) $ in Thousands | 12 Months Ended
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Dec. 31, 2017 USD ($)
Accounting Changes and Error Corrections [Abstract] |
Discrete tax benefits | $ 1,168

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- Definition Effective Income Tax Rate Reconciliation, Share Based Compensation, Excess Tax Benefit, Amount + References No definition available. + Details
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- References No definition available. + Details
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