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, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015	Dec. 31, 2015
Fair Value, Option, Quantitative Disclosures [Line Items]
Gains (Losses) From Fair Value Changes	$ 876	$ (461)	$ 1,639	$ (31)
Fair Value Of Items For Which Fair Value Option Was Elected Assets	84,795		84,795		$ 59,766
Aggregate Unpaid Principal Balance Of Items For Which Fair Value Option Was Elected Assets	82,280		82,280		58,890
Fair Value Option Aggregate Difference Assets	$ 2,515		$ 2,515		$ 876