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Commitments and Contingencies (Details Textual) - USD ($) $ in Millions | Dec. 17, 2014 | Sep. 30, 2015 | Dec. 31, 2014
--- | --- | --- | ---
Loss Contingencies [Line Items] |  |  |
Accrual for legal matters |  | $ 6.0 | $ 9.0
Estimated environmental matters |  | $ 5.0 | $ 5.0
Judicial Ruling |  |  |
Loss Contingencies [Line Items] |  |  |
Fines assessed | $ 1.6 |  |

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