Loans (Schedule of Allowance for Loan Losses) (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Allowance for Loan and Lease Losses [Roll Forward]
Beginning Balance	$ 15,169	$ 15,484	$ 14,929	$ 14,584
Provision for Loan Losses	250	200	500	550
Recoveries	138	121	289	944
Loans Charged-off	(299)	(255)	(460)	(528)
Ending Balance	15,258	15,550	15,258	15,550
Commercial and Industrial Loans and Leases
Allowance for Loan and Lease Losses [Roll Forward]
Beginning Balance	4,747	5,374	4,627	3,983
Provision for Loan Losses	(114)	365	(13)	1,687
Recoveries	26	9	67	78
Loans Charged-off	0	(87)	(22)	(87)
Ending Balance	4,659	5,661	4,659	5,661
Commercial Real Estate Loans
Allowance for Loan and Lease Losses [Roll Forward]
Beginning Balance	7,229	7,870	7,273	8,335
Provision for Loan Losses	54	(695)	2	(1,752)
Recoveries	43	27	51	730
Loans Charged-off	(11)	(3)	(11)	(114)
Ending Balance	7,315	7,199	7,315	7,199
Agricultural Loans
Allowance for Loan and Lease Losses [Roll Forward]
Beginning Balance	1,142	930	1,123	946
Provision for Loan Losses	81	86	100	70
Recoveries	0	0	0	0
Loans Charged-off	0	0	0	0
Ending Balance	1,223	1,016	1,223	1,016
Home Equity Loans
Allowance for Loan and Lease Losses [Roll Forward]
Beginning Balance	318	209	246	239
Provision for Loan Losses	57	181	129	181
Recoveries	6	42	6	42
Loans Charged-off	(31)	(14)	(31)	(44)
Ending Balance	350	418	350	418
Consumer Loans
Allowance for Loan and Lease Losses [Roll Forward]
Beginning Balance	389	186	354	188
Provision for Loan Losses	5	171	40	219
Recoveries	54	39	154	86
Loans Charged-off	(66)	(70)	(166)	(167)
Ending Balance	382	326	382	326
Residential Mortgage Loans
Allowance for Loan and Lease Losses [Roll Forward]
Beginning Balance	673	257	622	281
Provision for Loan Losses	128	255	216	262
Recoveries	9	4	11	8
Loans Charged-off	(191)	(81)	(230)	(116)
Ending Balance	619	435	619	435
Unallocated
Allowance for Loan and Lease Losses [Roll Forward]
Beginning Balance	671	658	684	612
Provision for Loan Losses	39	(163)	26	(117)
Recoveries	0	0	0	0
Loans Charged-off	0	0	0	0
Ending Balance	$ 710	$ 495	$ 710	$ 495

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

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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 of loans and leases that have been written off from both loan receivables and allowance reserve for credit loss.

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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

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-Publisher FASB

-Name Accounting Standards Codification

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-Publisher SEC

-Name Staff Accounting Bulletin (SAB)

-Number Topic 6

-Section L

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

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