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Recent Accounting Pronouncements (Details) - USD ($) $ in Thousands | Jan. 01, 2019 | Dec. 31, 2017
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New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |
Cumulative-effect adjustment |  | $ 2,196
Forecast | Accounting Standards Update 2016-02 |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |
Cumulative-effect adjustment | $ 100,000 |

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