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Recent Accounting Pronouncements (Details) - USD ($) $ in Thousands | 9 Months Ended
--- | ---
Sep. 30, 2017 | Sep. 30, 2016
Additional Paid-in Capital [Member] |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |
New Accounting Pronouncement or Change in Accounting Principle, Effect of Adoption, Quantification | $ (147) |
Accounting Standards Update 2014-09 [Member] |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |
New Accounting Pronouncement or Change in Accounting Principle, Effect of Adoption, Quantification | $ 46,000 | $ 33,000

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