Loans (Schedule of Allowance for Loan Losses) (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Allowance for Loan and Lease Losses [Roll Forward]
Beginning Balance	$ 14,929	$ 14,584	$ 15,520
Provision for Loan Losses	0	150	350
Recoveries	473	1,210	386
Loans Charged-off	(964)	(1,015)	(1,672)
Ending Balance	14,438	14,929	14,584
Commercial and Industrial Loans and Leases
Allowance for Loan and Lease Losses [Roll Forward]
Beginning Balance	4,627	3,983	4,555
Provision for Loan Losses	(451)	732	(197)
Recoveries	102	111	128
Loans Charged-off	(36)	(199)	(503)
Ending Balance	4,242	4,627	3,983
Commercial Real Estate Loans
Allowance for Loan and Lease Losses [Roll Forward]
Beginning Balance	7,273	8,335	8,931
Provision for Loan Losses	(688)	(1,596)	(160)
Recoveries	107	863	102
Loans Charged-off	(350)	(329)	(538)
Ending Balance	6,342	7,273	8,335
Agricultural Loans
Allowance for Loan and Lease Losses [Roll Forward]
Beginning Balance	1,123	946	989
Provision for Loan Losses	992	177	(43)
Recoveries	0	0	0
Loans Charged-off	0	0	0
Ending Balance	2,115	1,123	946
Home Equity Loans
Allowance for Loan and Lease Losses [Roll Forward]
Beginning Balance	246	239	141
Provision for Loan Losses	160	37	419
Recoveries	10	42	0
Loans Charged-off	(33)	(72)	(321)
Ending Balance	383	246	239
Consumer Loans
Allowance for Loan and Lease Losses [Roll Forward]
Beginning Balance	354	188	214
Provision for Loan Losses	(48)	291	112
Recoveries	236	173	148
Loans Charged-off	(312)	(298)	(286)
Ending Balance	230	354	188
Residential Mortgage Loans
Allowance for Loan and Lease Losses [Roll Forward]
Beginning Balance	622	281	186
Provision for Loan Losses	7	437	111
Recoveries	18	21	8
Loans Charged-off	(233)	(117)	(24)
Ending Balance	414	622	281
Unallocated
Allowance for Loan and Lease Losses [Roll Forward]
Beginning Balance	684	612	504
Provision for Loan Losses	28	72	108
Recoveries	0	0	0
Loans Charged-off	0	0	0
Ending Balance	$ 712	$ 684	$ 612

Amount of recovery of loans and lease receivables which had previously been fully or partially written-off as bad debts.

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- Definition

A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

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Amount, after recoveries, of loans and leases that have been written-off.

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- Definition

Amount of allowance to cover probable credit losses on loans and leases. Includes carryover of or adjustments to the allowance for loan losses in connection with business combinations. Excludes allowance for loans and leases covered under loss sharing agreements.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 11B
-Subparagraph (g)
-URI http://asc.fasb.org/extlink&oid=49124121&loc=SL6953423-111524

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 11B
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Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03.7(d))
-URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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-Section 50
-Paragraph 2
-Subparagraph (b)(1)(ii)
-URI http://asc.fasb.org/extlink&oid=6379141&loc=d3e15032-111544

Reference 5: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Staff Accounting Bulletin (SAB)
-Number Topic 6
-Section L
-Subsection 1

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Amount of expense related to estimated loss from loan and lease transactions.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 225
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-04.11)
-URI http://asc.fasb.org/extlink&oid=6879574&loc=d3e536633-122882

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-Publisher FASB
-Name Accounting Standards Codification
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-URI http://asc.fasb.org/extlink&oid=49124121&loc=SL6953423-111524

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