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Stock-Based Compensation Plans Stock Awards (Stock award, USD $)
Dec. 31, 2014
Stock award
 
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Outstanding at end of period 95,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsOutstandingNumber
/ us-gaap_AwardTypeAxis
= us-gaap_RestrictedStockMember
Exercise price of award $ 10us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExercisePrice
/ us-gaap_AwardTypeAxis
= us-gaap_RestrictedStockMember