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Mortgage Banking (Details 3) (USD $)
In Thousands, unless otherwise specified
Dec. 31, 2014
10% Adverse Change [Member]  
Assumption:  
Decline in fair value from increase in prepayment rate $ 358fdef_DeclineInFairValueFromIncreaseInPrepaymentRate
/ fdef_MortgageBankingAxis
= fdef_AdverseChangeMember
Declines in fair value from increase in discount rate 224fdef_DeclinesInFairValueFromIncreaseInDiscountRate
/ fdef_MortgageBankingAxis
= fdef_AdverseChangeMember
20% Adverse Change [Member]  
Assumption:  
Decline in fair value from increase in prepayment rate 759fdef_DeclineInFairValueFromIncreaseInPrepaymentRate
/ fdef_MortgageBankingAxis
= fdef_TwentyPercentageAdverseChangeMember
Declines in fair value from increase in discount rate $ 492fdef_DeclinesInFairValueFromIncreaseInDiscountRate
/ fdef_MortgageBankingAxis
= fdef_TwentyPercentageAdverseChangeMember