Estimated Fair Values (Fair Value Option) (Details) - Loans Held For Sale - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Fair Value, Option, Quantitative Disclosures [Line Items]
Fair Value Of Items For Which Fair Value Option Was Elected Assets	$ 51,179	$ 74,401
Aggregate Unpaid Principal Balance Of Items For Which Fair Value Option Was Elected Assets	49,796	75,893
Fair Value Option Aggregate Difference Assets	$ 1,383	$ (1,492)

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

No definition available.

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