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Income Taxes - Narrative (Details) - USD ($) $ in Millions | 3 Months Ended |
--- | --- | ---
Mar. 31, 2017 | Dec. 31, 2016
Income Taxes |  |
Unrecognized tax benefits | $ 0.1 | $ 0.1
Minimum |  |
Income Taxes |  |
Number of tax years open for state tax audit (in years) | 3 years |
Maximum |  |
Income Taxes |  |
Number of tax years open for state tax audit (in years) | 5 years |
Domestic Tax Authority | Earliest Tax Year |  |
Income Taxes |  |
Open tax year | 2013 |
Net Operating Loss And Other Carryforwards | Earliest Tax Year |  |
Income Taxes |  |
Open tax year | 2005 |
Net Operating Loss And Other Carryforwards | Latest Tax Year |  |
Income Taxes |  |
Open tax year | 2012 |

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