Other Real Estate Owned (Narrative) (Details) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Financing Receivable, Impaired [Line Items]
Real estate owned, valuation allowance	$ 349	$ 365	$ 4,100
Other real estate owned	11,734	6,738	$ 22,307	$ 37,942
Residential Real Estate
Financing Receivable, Impaired [Line Items]
Other real estate owned	354	1,600
Mortgage loans in process of foreclosure	$ 10,100	$ 10,700