Investment Securities (Narrative) (Details) (USD $)	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012	Dec. 31, 2012
Schedule of Investments [Line Items]
Proceeds from Sale of Available-for-sale Securities	$ 8,400,000	$ 4,600,000	$ 30,960,000	$ 14,418,000
Available-for-sale Securities Pledged as Collateral	$ 128,900,000		$ 128,900,000		$ 90,000,000
Mortgage Backed Securities [Member]
Schedule of Investments [Line Items]
Securities in unrealized loss positions qualitative disclosure number of positions	8		8
Certificates Of Deposit [Member]
Schedule of Investments [Line Items]
Securities in unrealized loss positions qualitative disclosure number of positions	1		1
State And Municipal Tax-Exempt [Member]
Schedule of Investments [Line Items]
Securities in unrealized loss positions qualitative disclosure number of positions	41		41
Corporate Bonds [Member]
Schedule of Investments [Line Items]
Securities in unrealized loss positions qualitative disclosure number of positions	10		10
US Government Agency Obligations [Member]
Schedule of Investments [Line Items]
Securities in unrealized loss positions qualitative disclosure number of positions	17		17
Collateralized Mortgage Obligations GSE [Member]
Schedule of Investments [Line Items]
Securities in unrealized loss positions qualitative disclosure number of positions	11		11
Equity Securities [Member]
Schedule of Investments [Line Items]
Securities in unrealized loss positions qualitative disclosure number of positions	5		5
Securities in unrealized loss position more than 12 months qualitative disclosure number of positions	5		5
Tax-exempt Municipal Securities [Member]
Schedule of Investments [Line Items]
Number of impaired securities	41		41
Number Of Impaired Municipal Securities, School Districts, State Qualified School Aid	8		8
Number Of Impaired Municipal Securities, School Districts, Additional Private Insurance	6		6
Number Of Impaired Municipal Securities, Remaining	9		9
Number Of Impaired Municipal Securities, School Districts, Insured	4		4
Number Of Impaired Municipal Securities, School Districts, Uninsured	1		1
Number Of Impaired Municipal Securities, Townships	3		3
Number Of Impaired Municipal Securities, Insured County	1		1