Securities (Financing Receivable Credit Quality Indicators) (Details) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2015	Dec. 31, 2014
Financing Receivable, Recorded Investment [Line Items]
Amount	$ 115,915	$ 121,234
Standard Poor's, AAA Rating [Member]
Financing Receivable, Recorded Investment [Line Items]
Amount	114,579	119,762
Standard Poor's, BBB Rating [Member]
Financing Receivable, Recorded Investment [Line Items]
Amount		68
Standard Poor's, BB Rating [Member]
Financing Receivable, Recorded Investment [Line Items]
Amount	662	695
Standard Poor's CCC + Rating [Member]
Financing Receivable, Recorded Investment [Line Items]
Amount	$ 674	$ 709