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Basis of Presentation and Significant Accounting Policies Adoption of New Accounting Standards (Details) - Accounting Standards Update 2016-09 [Member] - Successor [Member] $ in Thousands | 12 Months Ended
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Dec. 31, 2017 USD ($)
New Accounting Pronouncement or Change in Accounting Principle, Effect of Adoption, Quantification | $ (137)
AOCI Attributable to Parent [Member] |
New Accounting Pronouncement or Change in Accounting Principle, Effect of Adoption, Quantification | 0
Retained Earnings [Member] |
New Accounting Pronouncement or Change in Accounting Principle, Effect of Adoption, Quantification | $ (137)

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- Definition Represents the quantification of the effect of adopting the new accounting standard or change in accounting principle expected by the entity to have a significant effect on the entity's financial statements. + References No definition available. + Details
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