Loans and Leases, Part V (Details) (USD $) In Thousands, unless otherwise specified	9 Months Ended
	Sep. 30, 2013 rating	Dec. 31, 2012
Financing Receivable, Recorded Investment [Line Items]
Number of risk rating approaches	2
Credit risk ratings for commercial, construction, and other non-consumer related loans [Abstract]
Total	$ 62,202	$ 67,219
Credit risk ratings for consumer related loans and other homogenous loans [Abstract]
Total	62,202	67,219
Commercial Risk, Construction, and Other Non-Consumer Loans [Member]
Credit risk ratings for commercial, construction, and other non-consumer related loans [Abstract]
Total	321,828	332,826
Credit risk ratings for consumer related loans and other homogenous loans [Abstract]
Total	321,828	332,826
Commercial And Industrial [Member]
Credit risk ratings for commercial, construction, and other non-consumer related loans [Abstract]
Total	70,806	72,117
Credit risk ratings for consumer related loans and other homogenous loans [Abstract]
Total	70,806	72,117
Commercial RE [Member]
Credit risk ratings for commercial, construction, and other non-consumer related loans [Abstract]
Total	142,366	133,599
Credit risk ratings for consumer related loans and other homogenous loans [Abstract]
Total	142,366	133,599
RE Construction and Development Loans [Member]
Credit risk ratings for commercial, construction, and other non-consumer related loans [Abstract]
Total	83,676	90,941
Credit risk ratings for consumer related loans and other homogenous loans [Abstract]
Total	83,676	90,941
Agricultural [Member]
Credit risk ratings for commercial, construction, and other non-consumer related loans [Abstract]
Total	24,980	36,169
Credit risk ratings for consumer related loans and other homogenous loans [Abstract]
Total	24,980	36,169
Residential Mortgages [Member]
Credit risk ratings for commercial, construction, and other non-consumer related loans [Abstract]
Total	50,502	55,016
Credit risk ratings for consumer related loans and other homogenous loans [Abstract]
Total	50,502	55,016
Home Improvement and Home Equity [Member]
Credit risk ratings for commercial, construction, and other non-consumer related loans [Abstract]
Total	1,469	1,319
Credit risk ratings for consumer related loans and other homogenous loans [Abstract]
Total	1,469	1,319
Installment [Member]
Credit risk ratings for commercial, construction, and other non-consumer related loans [Abstract]
Total	10,231	10,884
Credit risk ratings for consumer related loans and other homogenous loans [Abstract]
Total	10,231	10,884
Grades 1 and 2 [Member] | Commercial Risk, Construction, and Other Non-Consumer Loans [Member]
Credit risk ratings for commercial, construction, and other non-consumer related loans [Abstract]
Total	860	885
Credit risk ratings for consumer related loans and other homogenous loans [Abstract]
Total	860	885
Grades 1 and 2 [Member] | Commercial And Industrial [Member]
Credit risk ratings for commercial, construction, and other non-consumer related loans [Abstract]
Total	790	825
Credit risk ratings for consumer related loans and other homogenous loans [Abstract]
Total	790	825
Grades 1 and 2 [Member] | Commercial RE [Member]
Credit risk ratings for commercial, construction, and other non-consumer related loans [Abstract]
Total	0	0
Credit risk ratings for consumer related loans and other homogenous loans [Abstract]
Total	0	0
Grades 1 and 2 [Member] | RE Construction and Development Loans [Member]
Credit risk ratings for commercial, construction, and other non-consumer related loans [Abstract]
Total	0	0
Credit risk ratings for consumer related loans and other homogenous loans [Abstract]
Total	0	0
Grades 1 and 2 [Member] | Agricultural [Member]
Credit risk ratings for commercial, construction, and other non-consumer related loans [Abstract]
Total	70	60
Credit risk ratings for consumer related loans and other homogenous loans [Abstract]
Total	70	60
Grade 3 [Member] | Commercial Risk, Construction, and Other Non-Consumer Loans [Member]
Credit risk ratings for commercial, construction, and other non-consumer related loans [Abstract]
Total	8,198	8,874
Credit risk ratings for consumer related loans and other homogenous loans [Abstract]
Total	8,198	8,874
Grade 3 [Member] | Commercial And Industrial [Member]
Credit risk ratings for commercial, construction, and other non-consumer related loans [Abstract]
Total	2,018	2,071
Credit risk ratings for consumer related loans and other homogenous loans [Abstract]
Total	2,018	2,071
Grade 3 [Member] | Commercial RE [Member]
Credit risk ratings for commercial, construction, and other non-consumer related loans [Abstract]
Total	5,354	5,947
Credit risk ratings for consumer related loans and other homogenous loans [Abstract]
Total	5,354	5,947
Grade 3 [Member] | RE Construction and Development Loans [Member]
Credit risk ratings for commercial, construction, and other non-consumer related loans [Abstract]
Total	826	856
Credit risk ratings for consumer related loans and other homogenous loans [Abstract]
Total	826	856
Grade 3 [Member] | Agricultural [Member]
Credit risk ratings for commercial, construction, and other non-consumer related loans [Abstract]
Total	0	0
Credit risk ratings for consumer related loans and other homogenous loans [Abstract]
Total	0	0
Grade 4 and 5 Pass [Member] | Minimum [Member]
Financing Receivable, Recorded Investment [Line Items]
Notes receivable, period of loss recognition	3 years
Grade 4 and 5 Pass [Member] | Maximum [Member]
Financing Receivable, Recorded Investment [Line Items]
Notes receivable, period of loss recognition	4 years
Grade 4 and 5 Pass [Member] | Commercial Risk, Construction, and Other Non-Consumer Loans [Member]
Credit risk ratings for commercial, construction, and other non-consumer related loans [Abstract]
Total	284,728	293,868
Credit risk ratings for consumer related loans and other homogenous loans [Abstract]
Total	284,728	293,868
Grade 4 and 5 Pass [Member] | Commercial And Industrial [Member]
Credit risk ratings for commercial, construction, and other non-consumer related loans [Abstract]
Total	67,153	66,098
Credit risk ratings for consumer related loans and other homogenous loans [Abstract]
Total	67,153	66,098
Grade 4 and 5 Pass [Member] | Commercial RE [Member]
Credit risk ratings for commercial, construction, and other non-consumer related loans [Abstract]
Total	127,235	116,606
Credit risk ratings for consumer related loans and other homogenous loans [Abstract]
Total	127,235	116,606
Grade 4 and 5 Pass [Member] | RE Construction and Development Loans [Member]
Credit risk ratings for commercial, construction, and other non-consumer related loans [Abstract]
Total	65,430	75,191
Credit risk ratings for consumer related loans and other homogenous loans [Abstract]
Total	65,430	75,191
Grade 4 and 5 Pass [Member] | Agricultural [Member]
Credit risk ratings for commercial, construction, and other non-consumer related loans [Abstract]
Total	24,910	35,973
Credit risk ratings for consumer related loans and other homogenous loans [Abstract]
Total	24,910	35,973
Grade 6 Special Mention [Member] | Commercial Risk, Construction, and Other Non-Consumer Loans [Member]
Credit risk ratings for commercial, construction, and other non-consumer related loans [Abstract]
Total	698	2,008
Credit risk ratings for consumer related loans and other homogenous loans [Abstract]
Total	698	2,008
Grade 6 Special Mention [Member] | Commercial And Industrial [Member]
Credit risk ratings for commercial, construction, and other non-consumer related loans [Abstract]
Total	698	1,867
Credit risk ratings for consumer related loans and other homogenous loans [Abstract]
Total	698	1,867
Grade 6 Special Mention [Member] | Commercial RE [Member]
Credit risk ratings for commercial, construction, and other non-consumer related loans [Abstract]
Total	0	0
Credit risk ratings for consumer related loans and other homogenous loans [Abstract]
Total	0	0
Grade 6 Special Mention [Member] | RE Construction and Development Loans [Member]
Credit risk ratings for commercial, construction, and other non-consumer related loans [Abstract]
Total	0	141
Credit risk ratings for consumer related loans and other homogenous loans [Abstract]
Total	0	141
Grade 6 Special Mention [Member] | Agricultural [Member]
Credit risk ratings for commercial, construction, and other non-consumer related loans [Abstract]
Total	0	0
Credit risk ratings for consumer related loans and other homogenous loans [Abstract]
Total	0	0
Grade 7 Substandard [Member] | Commercial Risk, Construction, and Other Non-Consumer Loans [Member]
Credit risk ratings for commercial, construction, and other non-consumer related loans [Abstract]
Total	27,344	27,191
Credit risk ratings for consumer related loans and other homogenous loans [Abstract]
Total	27,344	27,191
Grade 7 Substandard [Member] | Commercial And Industrial [Member]
Credit risk ratings for commercial, construction, and other non-consumer related loans [Abstract]
Total	147	1,256
Credit risk ratings for consumer related loans and other homogenous loans [Abstract]
Total	147	1,256
Grade 7 Substandard [Member] | Commercial RE [Member]
Credit risk ratings for commercial, construction, and other non-consumer related loans [Abstract]
Total	9,777	11,046
Credit risk ratings for consumer related loans and other homogenous loans [Abstract]
Total	9,777	11,046
Grade 7 Substandard [Member] | RE Construction and Development Loans [Member]
Credit risk ratings for commercial, construction, and other non-consumer related loans [Abstract]
Total	17,420	14,753
Credit risk ratings for consumer related loans and other homogenous loans [Abstract]
Total	17,420	14,753
Grade 7 Substandard [Member] | Agricultural [Member]
Credit risk ratings for commercial, construction, and other non-consumer related loans [Abstract]
Total	0	136
Credit risk ratings for consumer related loans and other homogenous loans [Abstract]
Total	0	136
Grade 8 Doubtful [Member] | Commercial Risk, Construction, and Other Non-Consumer Loans [Member]
Credit risk ratings for commercial, construction, and other non-consumer related loans [Abstract]
Total	0	0
Credit risk ratings for consumer related loans and other homogenous loans [Abstract]
Total	0	0
Grade 8 Doubtful [Member] | Commercial And Industrial [Member]
Credit risk ratings for commercial, construction, and other non-consumer related loans [Abstract]
Total	0	0
Credit risk ratings for consumer related loans and other homogenous loans [Abstract]
Total	0	0
Grade 8 Doubtful [Member] | Commercial RE [Member]
Credit risk ratings for commercial, construction, and other non-consumer related loans [Abstract]
Total	0	0
Credit risk ratings for consumer related loans and other homogenous loans [Abstract]
Total	0	0
Grade 8 Doubtful [Member] | RE Construction and Development Loans [Member]
Credit risk ratings for commercial, construction, and other non-consumer related loans [Abstract]
Total	0	0
Credit risk ratings for consumer related loans and other homogenous loans [Abstract]
Total	0	0
Grade 8 Doubtful [Member] | Agricultural [Member]
Credit risk ratings for commercial, construction, and other non-consumer related loans [Abstract]
Total	0	0
Credit risk ratings for consumer related loans and other homogenous loans [Abstract]
Total	0	0
Not Graded [Member]
Credit risk ratings for commercial, construction, and other non-consumer related loans [Abstract]
Total	39,143	41,257
Credit risk ratings for consumer related loans and other homogenous loans [Abstract]
Total	39,143	41,257
Not Graded [Member] | Residential Mortgages [Member]
Credit risk ratings for commercial, construction, and other non-consumer related loans [Abstract]
Total	28,985	30,727
Credit risk ratings for consumer related loans and other homogenous loans [Abstract]
Total	28,985	30,727
Not Graded [Member] | Home Improvement and Home Equity [Member]
Credit risk ratings for commercial, construction, and other non-consumer related loans [Abstract]
Total	1,437	1,309
Credit risk ratings for consumer related loans and other homogenous loans [Abstract]
Total	1,437	1,309
Not Graded [Member] | Installment [Member]
Credit risk ratings for commercial, construction, and other non-consumer related loans [Abstract]
Total	8,721	9,221
Credit risk ratings for consumer related loans and other homogenous loans [Abstract]
Total	8,721	9,221
Pass [Member]
Credit risk ratings for commercial, construction, and other non-consumer related loans [Abstract]
Total	20,655	21,994
Credit risk ratings for consumer related loans and other homogenous loans [Abstract]
Total	20,655	21,994
Pass [Member] | Residential Mortgages [Member]
Credit risk ratings for commercial, construction, and other non-consumer related loans [Abstract]
Total	19,145	20,572
Credit risk ratings for consumer related loans and other homogenous loans [Abstract]
Total	19,145	20,572
Pass [Member] | Home Improvement and Home Equity [Member]
Credit risk ratings for commercial, construction, and other non-consumer related loans [Abstract]
Total	0	0
Credit risk ratings for consumer related loans and other homogenous loans [Abstract]
Total	0	0
Pass [Member] | Installment [Member]
Credit risk ratings for commercial, construction, and other non-consumer related loans [Abstract]
Total	1,510	1,422
Credit risk ratings for consumer related loans and other homogenous loans [Abstract]
Total	1,510	1,422
Special Mention [Member]
Credit risk ratings for commercial, construction, and other non-consumer related loans [Abstract]
Total	32	958
Credit risk ratings for consumer related loans and other homogenous loans [Abstract]
Total	32	958
Special Mention [Member] | Residential Mortgages [Member]
Credit risk ratings for commercial, construction, and other non-consumer related loans [Abstract]
Total	0	909
Credit risk ratings for consumer related loans and other homogenous loans [Abstract]
Total	0	909
Special Mention [Member] | Home Improvement and Home Equity [Member]
Credit risk ratings for commercial, construction, and other non-consumer related loans [Abstract]
Total	32	0
Credit risk ratings for consumer related loans and other homogenous loans [Abstract]
Total	32	0
Special Mention [Member] | Installment [Member]
Credit risk ratings for commercial, construction, and other non-consumer related loans [Abstract]
Total	0	49
Credit risk ratings for consumer related loans and other homogenous loans [Abstract]
Total	0	49
Substandard [Member]
Credit risk ratings for commercial, construction, and other non-consumer related loans [Abstract]
Total	2,372	3,010
Credit risk ratings for consumer related loans and other homogenous loans [Abstract]
Total	2,372	3,010
Substandard [Member] | Residential Mortgages [Member]
Credit risk ratings for commercial, construction, and other non-consumer related loans [Abstract]
Total	2,372	2,808
Credit risk ratings for consumer related loans and other homogenous loans [Abstract]
Total	2,372	2,808
Substandard [Member] | Home Improvement and Home Equity [Member]
Credit risk ratings for commercial, construction, and other non-consumer related loans [Abstract]
Total	0	10
Credit risk ratings for consumer related loans and other homogenous loans [Abstract]
Total	0	10
Substandard [Member] | Installment [Member]
Credit risk ratings for commercial, construction, and other non-consumer related loans [Abstract]
Total	0	192
Credit risk ratings for consumer related loans and other homogenous loans [Abstract]
Total	$ 0	$ 192