Investment Securities (Narrative) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2015	Dec. 31, 2014
Securities [Line Items]
Available-for-sale Securities Pledged as Collateral	$ 168.9	$ 174.9
Percent of principal outstanding collected of held-to-maturity securities	85.00%
Mortgage Backed Securities [Member]
Securities [Line Items]
Securities in unrealized loss positions qualitative disclosure number of positions	4
Number of securities, impaired for more than 12 months	3
State And Municipal Tax-Exempt [Member]
Securities [Line Items]
Securities in unrealized loss positions qualitative disclosure number of positions	23
Number of securities, impaired for more than 12 months	14
Number Of Impaired Municipal Securities, School Districts, Insured	16
Number Of Impaired Municipal Securities, School Districts, Uninsured	6
Number Of Impaired Municipal Securities, Townships, Uninsured	1
Corporate Bonds [Member]
Securities [Line Items]
Securities in unrealized loss positions qualitative disclosure number of positions	7
Number of securities, impaired for more than 12 months	1
US Government Agency Obligations [Member]
Securities [Line Items]
Securities in unrealized loss positions qualitative disclosure number of positions	2
Number of securities, impaired for more than 12 months	0
Collateralized Mortgage Obligations GSE [Member]
Securities [Line Items]
Securities in unrealized loss positions qualitative disclosure number of positions	12
Number of securities, impaired for more than 12 months	12
Equity Securities [Member]
Securities [Line Items]
Securities in unrealized loss positions qualitative disclosure number of positions	5
Number of securities, impaired for more than 12 months	5