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Recently Issued Accounting Standards - Narrative (Details) - Accounting Standards Update 2016-01 | Dec. 31, 2017 USD ($)
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Accumulated Other Comprehensive Loss |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |
Cumulative effect of new accounting principle | $ (10,864)
Retained Earnings |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |
Cumulative effect of new accounting principle | $ 10,864

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