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Earnings per Share (Details)
3 Months Ended
Mar. 31, 2015
Mar. 31, 2014
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]    
Antidilutive securities excluded from computation of earnings per share 5,200,000us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount 3,600,000us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount
Warrants outstanding 573,521us-gaap_ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRights