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Estimated Fair Values Estimated Fair Values (Fair Value Option) (Details) - Loans Held For Sale - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2015
Jun. 30, 2015
Dec. 31, 2014
Fair Value, Option, Quantitative Disclosures [Line Items]      
Gains (Losses) From Fair Value Changes $ (461) $ (31)  
Fair Value Of Items For Which Fair Value Option Was Elected Assets 85,040 85,040 $ 63,696
Aggregate Unpaid Principal Balance Of Items For Which Fair Value Option Was Elected Assets 84,257 84,257 62,996
Fair Value Option Aggregate Difference Assets $ 783 $ 783 $ 700