Investment Securities (Narrative) (Details) (USD $)	3 Months Ended
	Mar. 31, 2013	Dec. 31, 2012
Schedule of Investments [Line Items]
Book value of corporate bonds	$ 2,000,000
Unrealized losses on corporate bonds	29,000
Ratio of Unrealized Loss to Book Value of Impaired Securities	1.50%
Proceeds from Sale of Available-for-sale Securities	16,292,000
Available-for-sale Securities Pledged as Collateral	$ 97,000,000	$ 90,000,000
Certificates of deposit [Member]
Schedule of Investments [Line Items]
Securities in unrealized loss positions qualitative disclosure number of positions	2
State and municipal tax-exempt [Member]
Schedule of Investments [Line Items]
Securities in unrealized loss positions qualitative disclosure number of positions	25
Corporate bonds [Member]
Schedule of Investments [Line Items]
Securities in unrealized loss positions qualitative disclosure number of positions	5
Securities in unrealized loss position more than 12 months qualitative disclosure number of positions	2
US Government agency obligations [Member]
Schedule of Investments [Line Items]
Securities in unrealized loss positions qualitative disclosure number of positions	4
Collateralized mortgage obligations GSE [Member]
Schedule of Investments [Line Items]
Securities in unrealized loss positions qualitative disclosure number of positions	7
Equity securities [Member]
Schedule of Investments [Line Items]
Securities in unrealized loss positions qualitative disclosure number of positions	5
Securities in unrealized loss position more than 12 months qualitative disclosure number of positions	5