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Earnings Per Share (Narrative) (Details)
12 Months Ended
Dec. 31, 2012
Feb. 29, 2012
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]    
Stock options outstanding   0us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber
Stock Option Plan [Member]    
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]    
Antidilutive stock options 0us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount
/ us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis
= us-gaap_EmployeeStockOptionMember