Segment Reporting (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011
Segment Reporting [Abstract]
Description of operating segments	The Company's reportable segments are strategic business units that offer different products and services. They are managed separately because each segment appeals to different markets and, accordingly, requires different technologies and marketing strategies.
Revenues
Interest and dividend income	$ 32,580	$ 36,251
Income from fiduciary activities	3,214	3,002
Other income	11,745	9,194
Total operating income	47,539	48,447
Expenses
Interest expense	5,774	6,715
Provision for loan losses	2,400	3,700
Salaries and employee benefits	20,340	19,139
Other expenses	13,843	14,540
Total operating expenses	42,357	44,094
Income before taxes	5,182	4,353
Income tax expense (benefit)	995	1,063
Net income	4,187	3,290
Total assets	907,499	849,504
Intersegment loan [Abstract]
Intersegment line of credit facility, interest rate description	Wall Street Journal Prime Rate minus 0.5%, with a floor of 5.0%.
Number of geographical area in which an entity operates	1
Bank [Member]
Revenues
Interest and dividend income	32,544	36,207
Income from fiduciary activities	0	0
Other income	11,313	8,942
Total operating income	43,857	45,149
Expenses
Interest expense	5,775	6,716
Provision for loan losses	2,400	3,700
Salaries and employee benefits	17,668	16,574
Other expenses	13,372	13,755
Total operating expenses	39,215	40,745
Income before taxes	4,642	4,404
Income tax expense (benefit)	791	1,056
Net income	3,851	3,348
Total assets	903,454	845,323
Trust [Member]
Revenues
Interest and dividend income	35	41
Income from fiduciary activities	3,214	3,002
Other income	495	314
Total operating income	3,744	3,357
Expenses
Interest expense	0	0
Provision for loan losses	0	0
Salaries and employee benefits	2,172	2,044
Other expenses	954	906
Total operating expenses	3,126	2,950
Income before taxes	618	407
Income tax expense (benefit)	210	138
Net income	408	269
Total assets	5,257	4,979
Unconsolidated Parent [Member]
Revenues
Interest and dividend income	4,267	3,633
Income from fiduciary activities	0	0
Other income	660	300
Total operating income	4,927	3,933
Expenses
Interest expense	6	12
Provision for loan losses	0	0
Salaries and employee benefits	500	521
Other expenses	240	241
Total operating expenses	746	774
Income before taxes	4,181	3,159
Income tax expense (benefit)	(6)	(131)
Net income	4,187	3,290
Total assets	89,300	85,989
Eliminations [Member]
Revenues
Interest and dividend income	(4,266)	(3,630)
Income from fiduciary activities	0	0
Other income	(723)	(362)
Total operating income	(4,989)	(3,992)
Expenses
Interest expense	(7)	(13)
Provision for loan losses	0	0
Salaries and employee benefits	0	0
Other expenses	(723)	(362)
Total operating expenses	(730)	(375)
Income before taxes	(4,259)	(3,617)
Income tax expense (benefit)	0	0
Net income	(4,259)	(3,617)
Total assets	$ (90,512)	$ (86,787)