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Basis of Presentation - Narrative (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2017 | Jun. 30, 2017
Accounting Policies [Abstract] |  |
Recognition of excess tax benefit | $ 12 | $ 104

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- Definition Effective Income Tax Rate Reconciliation, Share-based Compensation, Excess Tax Benefit, Amount + References No definition available. + Details
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- References No definition available. + Details
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