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Litigation (Details) (USD $)
In Millions, unless otherwise specified
0 Months Ended
Nov. 19, 2014
Sep. 14, 2010
Commitments and Contingencies Disclosure [Abstract]    
Alleged tax deficiency $ 6.1us-gaap_IncomeTaxExaminationEstimateOfPossibleLoss $ 13.3us-gaap_IncomeTaxExaminationEstimateOfPossibleLoss