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Operations and Significant Accounting Policies - New Accounting Standards (Details) $ in Millions | 3 Months Ended
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Mar. 31, 2017 USD ($)
Accounting Standards Update 2016-09 [Member] | Income Tax Expense (Benefit) [Member] | Maximum [Member] |
New Accounting Standards [Line Items] |
Effect of the Adoption | $ 1.0

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