Loans Loan Categories and Past Due Loans(Details) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2014	Dec. 31, 2013	Jun. 30, 2013
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans Past Due 30 - 59 Days	$ 3,377	$ 4,303	$ 4,550
Loans Past Due 60 - 89 Days	3,276	4,388	3,390
Loans Past Due 90 or more Days	5,222	5,422	3,615
Total Loans Past Due	11,875	14,113	11,555
Current Loans	1,332,249	1,252,359	1,193,179
Total Loans	1,344,124	1,266,472	1,204,734
Loans 90 Days or More Past Due and Still Accruing Interest	1,325	652	760
Nonaccrual Loans	6,185	6,479	5,591
Commercial [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans Past Due 30 - 59 Days	212	304	765
Loans Past Due 60 - 89 Days	575	601	655
Loans Past Due 90 or more Days	108	177	220
Total Loans Past Due	895	1,082	1,640
Current Loans	92,995	86,811	85,909
Total Loans	93,890	87,893	87,549
Loans 90 Days or More Past Due and Still Accruing Interest	0	28	154
Nonaccrual Loans	164	352	299
Commercial Construction [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans Past Due 30 - 59 Days	0	0	0
Loans Past Due 60 - 89 Days	0	0	0
Loans Past Due 90 or more Days	0	0	0
Total Loans Past Due	0	0	0
Current Loans	29,702	27,815	30,980
Total Loans	29,702	27,815	30,980
Loans 90 Days or More Past Due and Still Accruing Interest	0	0	0
Nonaccrual Loans	0	0	0
Commercial Real Estate [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans Past Due 30 - 59 Days	0	200	262
Loans Past Due 60 - 89 Days	443	1,200	997
Loans Past Due 90 or more Days	1,887	2,034	1,875
Total Loans Past Due	2,330	3,434	3,134
Current Loans	307,316	284,685	256,665
Total Loans	309,646	288,119	259,799
Loans 90 Days or More Past Due and Still Accruing Interest	51	0	0
Nonaccrual Loans	2,079	2,048	1,941
Other Consumer [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans Past Due 30 - 59 Days	30	37	16
Loans Past Due 60 - 89 Days	6	19	15
Loans Past Due 90 or more Days	0	0	4
Total Loans Past Due	36	56	35
Current Loans	7,827	7,593	7,421
Total Loans	7,863	7,649	7,456
Loans 90 Days or More Past Due and Still Accruing Interest	0	0	0
Nonaccrual Loans	1	0	7
Automobile [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans Past Due 30 - 59 Days	2,696	3,233	2,346
Loans Past Due 60 - 89 Days	811	1,041	527
Loans Past Due 90 or more Days	272	98	114
Total Loans Past Due	3,779	4,372	2,987
Current Loans	405,522	389,832	372,073
Total Loans	409,301	394,204	375,060
Loans 90 Days or More Past Due and Still Accruing Interest	5	0	0
Nonaccrual Loans	472	219	264
Residential [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans Past Due 30 - 59 Days	439	529	1,161
Loans Past Due 60 - 89 Days	1,441	1,527	1,196
Loans Past Due 90 or more Days	2,955	3,113	1,402
Total Loans Past Due	4,835	5,169	3,759
Current Loans	488,887	455,623	440,131
Total Loans	493,722	460,792	443,890
Loans 90 Days or More Past Due and Still Accruing Interest	1,269	624	606
Nonaccrual Loans	$ 3,469	$ 3,860	$ 3,080