Segment and Related Information (Segment Information) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Segment Reporting Information [Line Items]
Net interest income and other income from external customers	$ 46,211	$ 46,107	$ 47,189
Income before income taxes	11,205	10,656	10,476
Total assets	1,049,995	1,004,823	968,667
Capital expenditures	2,049	1,942	1,089
Banking [Member]
Segment Reporting Information [Line Items]
Net interest income and other income from external customers	41,525	41,463	42,503
Income before income taxes	10,628	9,951	10,005
Total assets	1,038,262	992,252	956,662
Capital expenditures	1,986	1,938	1,068
Insurance [Member]
Segment Reporting Information [Line Items]
Net interest income and other income from external customers	4,686	4,644	4,686
Income before income taxes	577	705	471
Total assets	11,733	12,571	12,005
Capital expenditures	$ 63	$ 4	$ 21