Loan Servicing Rights (Narrative) (Details) - USD ($) $ in Thousands		Dec. 31, 2017	Dec. 31, 2016
Retained Earnings Adjustments [Line Items]
Cumulative effect adjustment of change in accounting policy, net of tax impact	[1]	$ 1,339	$ 3,659
Retained Earnings [Member]
Retained Earnings Adjustments [Line Items]
Cumulative effect adjustment of change in accounting policy, net of tax impact	[1]	$ 1,680	$ 3,659

[1] Refer to Note 1, Summary of Significant Accounting Policies, Note 4, Investment Securities, Note 7, Other Real Estate Owned and Repossessed Assets and Note 9, Loan Servicing Rights, for further details on the changes in accounting policy.