Loans (Allowance for Loan Losses and Recorded Investment in Loans by Portfolio Class) (Details) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2014		Jun. 30, 2014	Dec. 31, 2013		Sep. 30, 2013	Jun. 30, 2013	Dec. 31, 2012
Allowance for Loan Losses:
Individually Evaluated for Impairment	$ 1,579			$ 3,095
Collectively Evaluated for Impairment	13,981			11,481
Acquired with Deteriorated Credit Quality	32			8
Total Ending Allowance Balance	15,592		15,550	14,584		14,464	15,263	15,520
Loans:
Loans Individually Evaluated for Impairment	5,951			8,458
Loans Collectively Evaluated for Impairment	1,428,066			1,367,591
Loans Acquired with Deteriorated Credit Quality	8,731			14,753
Total Ending Loans Balance	1,442,748	[1]		1,390,802	[2]
Commercial and Industrial Loans and Leases
Allowance for Loan Losses:
Individually Evaluated for Impairment	205			45
Collectively Evaluated for Impairment	4,912			3,938
Acquired with Deteriorated Credit Quality	0			0
Total Ending Allowance Balance	5,117		5,661	3,983		3,971	4,258	4,555
Loans:
Loans Individually Evaluated for Impairment	2,157			2,114
Loans Collectively Evaluated for Impairment	376,176			347,808
Loans Acquired with Deteriorated Credit Quality	387			1,981
Total Ending Loans Balance	378,720	[1]		351,903	[2]
Commercial Real Estate Loans
Allowance for Loan Losses:
Individually Evaluated for Impairment	1,374			3,050
Collectively Evaluated for Impairment	6,075			5,277
Acquired with Deteriorated Credit Quality	5			8
Total Ending Allowance Balance	7,454		7,199	8,335		8,217	8,636	8,931
Loans:
Loans Individually Evaluated for Impairment	3,794			6,344
Loans Collectively Evaluated for Impairment	576,848			566,389
Loans Acquired with Deteriorated Credit Quality	6,724			10,871
Total Ending Loans Balance	587,366	[1]		583,604	[2]
Agricultural Loans
Allowance for Loan Losses:
Individually Evaluated for Impairment	0			0
Collectively Evaluated for Impairment	1,172			946
Acquired with Deteriorated Credit Quality	0			0
Total Ending Allowance Balance	1,172		1,016	946		870	817	989
Loans:
Loans Individually Evaluated for Impairment	0			0
Loans Collectively Evaluated for Impairment	204,792			195,171
Loans Acquired with Deteriorated Credit Quality	0			0
Total Ending Loans Balance	204,792	[1]		195,171	[2]
Home Equity Loans
Allowance for Loan Losses:
Individually Evaluated for Impairment	0			0
Collectively Evaluated for Impairment	378			239
Acquired with Deteriorated Credit Quality	0			0
Total Ending Allowance Balance	378		418	239		209	313	141
Loans:
Loans Individually Evaluated for Impairment	0			0
Loans Collectively Evaluated for Impairment	85,474			81,812
Loans Acquired with Deteriorated Credit Quality	0			0
Total Ending Loans Balance	85,474	[1]		81,812	[2]
Consumer Loans
Allowance for Loan Losses:
Individually Evaluated for Impairment	0			0
Collectively Evaluated for Impairment	379			188
Acquired with Deteriorated Credit Quality	0			0
Total Ending Allowance Balance	379		326	188		203	199	214
Loans:
Loans Individually Evaluated for Impairment	0			0
Loans Collectively Evaluated for Impairment	48,615			49,131
Loans Acquired with Deteriorated Credit Quality	122			134
Total Ending Loans Balance	48,737	[1]		49,265	[2]
Residential Mortgage Loans
Allowance for Loan Losses:
Individually Evaluated for Impairment	0			0
Collectively Evaluated for Impairment	380			281
Acquired with Deteriorated Credit Quality	27			0
Total Ending Allowance Balance	407		435	281		301	280	186
Loans:
Loans Individually Evaluated for Impairment	0			0
Loans Collectively Evaluated for Impairment	136,161			127,280
Loans Acquired with Deteriorated Credit Quality	1,498			1,767
Total Ending Loans Balance	137,659	[1]		129,047	[2]
Unallocated
Allowance for Loan Losses:
Individually Evaluated for Impairment	0			0
Collectively Evaluated for Impairment	685			612
Acquired with Deteriorated Credit Quality	0			0
Total Ending Allowance Balance	685		495	612		693	760	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 $5,974 in accrued interest.

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