Loans (Allowance for Loan Losses and Recorded Investment in Loans by Portfolio Class) (Details) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2014		Mar. 31, 2014	Dec. 31, 2013		Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2012
Allowance for Loan Losses:
Individually Evaluated for Impairment	$ 1,549			$ 3,095
Collectively Evaluated for Impairment	13,995			11,481
Acquired with Deteriorated Credit Quality	6			8
Total Ending Allowance Balance	15,550		15,484	14,584		15,263	15,734	15,520
Loans:
Loans Individually Evaluated for Impairment	7,108			8,458
Loans Collectively Evaluated for Impairment	1,399,929			1,367,591
Loans Acquired with Deteriorated Credit Quality	11,552			14,753
Total Ending Loans Balance	1,418,589	[1]		1,390,802	[2]
Commercial and Industrial Loans and Leases [Member]
Allowance for Loan Losses:
Individually Evaluated for Impairment	213			45
Collectively Evaluated for Impairment	5,448			3,938
Acquired with Deteriorated Credit Quality	0			0
Total Ending Allowance Balance	5,661		5,374	3,983		4,258	4,753	4,555
Loans:
Loans Individually Evaluated for Impairment	2,245			2,114
Loans Collectively Evaluated for Impairment	364,083			347,808
Loans Acquired with Deteriorated Credit Quality	591			1,981
Total Ending Loans Balance	366,919	[1]		351,903	[2]
Commercial Real Estate Loans [Member]
Allowance for Loan Losses:
Individually Evaluated for Impairment	1,336			3,050
Collectively Evaluated for Impairment	5,857			5,277
Acquired with Deteriorated Credit Quality	6			8
Total Ending Allowance Balance	7,199		7,870	8,335		8,636	8,879	8,931
Loans:
Loans Individually Evaluated for Impairment	4,863			6,344
Loans Collectively Evaluated for Impairment	581,919			566,389
Loans Acquired with Deteriorated Credit Quality	9,332			10,871
Total Ending Loans Balance	596,114	[1]		583,604	[2]
Agricultural Loans [Member]
Allowance for Loan Losses:
Individually Evaluated for Impairment	0			0
Collectively Evaluated for Impairment	1,016			946
Acquired with Deteriorated Credit Quality	0			0
Total Ending Allowance Balance	1,016		930	946		817	766	989
Loans:
Loans Individually Evaluated for Impairment	0			0
Loans Collectively Evaluated for Impairment	190,368			195,171
Loans Acquired with Deteriorated Credit Quality	0			0
Total Ending Loans Balance	190,368	[1]		195,171	[2]
Home Equity Loans [Member]
Allowance for Loan Losses:
Individually Evaluated for Impairment	0			0
Collectively Evaluated for Impairment	418			239
Acquired with Deteriorated Credit Quality	0			0
Total Ending Allowance Balance	418		209	239		313	118	141
Loans:
Loans Individually Evaluated for Impairment	0			0
Loans Collectively Evaluated for Impairment	83,888			81,812
Loans Acquired with Deteriorated Credit Quality	0			0
Total Ending Loans Balance	83,888	[1]		81,812	[2]
Consumer Loans [Member]
Allowance for Loan Losses:
Individually Evaluated for Impairment	0			0
Collectively Evaluated for Impairment	326			188
Acquired with Deteriorated Credit Quality	0			0
Total Ending Allowance Balance	326		186	188		199	189	214
Loans:
Loans Individually Evaluated for Impairment	0			0
Loans Collectively Evaluated for Impairment	46,708			49,131
Loans Acquired with Deteriorated Credit Quality	126			134
Total Ending Loans Balance	46,834	[1]		49,265	[2]
Residential Mortgage Loans [Member]
Allowance for Loan Losses:
Individually Evaluated for Impairment	0			0
Collectively Evaluated for Impairment	435			281
Acquired with Deteriorated Credit Quality	0			0
Total Ending Allowance Balance	435		257	281		280	300	186
Loans:
Loans Individually Evaluated for Impairment	0			0
Loans Collectively Evaluated for Impairment	132,963			127,280
Loans Acquired with Deteriorated Credit Quality	1,503			1,767
Total Ending Loans Balance	134,466	[1]		129,047	[2]
Unallocated [Member]
Allowance for Loan Losses:
Individually Evaluated for Impairment	0			0
Collectively Evaluated for Impairment	495			612
Acquired with Deteriorated Credit Quality	0			0
Total Ending Allowance Balance	495		658	612		760	729	504
Loans:
Loans Individually Evaluated for Impairment	0			0
Loans Collectively Evaluated for Impairment	0			0
Loans Acquired with Deteriorated Credit Quality	0			0
Total Ending Loans Balance	$ 0	[1]		$ 0	[2]

[1] Total recorded investment in loans includes $5,258 in accrued interest.

[2] Total recorded investment in loans includes $5,590 in accrued interest.