Loans & Leases and Allowance for Credit Losses, Impaired Loans (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended	12 Months Ended
Mar. 31, 2014	Mar. 31, 2013	Dec. 31, 2013
With no related allowance recorded [Abstract]
Recorded Investment	$ 4,138	$ 6,456	$ 3,611
Unpaid Principal Balance	4,214	6,553	3,676
Average Recorded Investment	3,876	7,837	5,253
Interest Income Recognized	29	8	37
With an allowance recorded [Abstract]
Recorded Investment	2,953	4,470	3,637
Unpaid Principal Balance	3,038	4,532	3,845
Related Allowance	1,182	1,706	1,284
Average Recorded Investment	3,296	3,439	3,611
Interest Income Recognized	9	11	49
Recorded Investment, Total	7,091	10,926	7,248
Unpaid Principal Balance, Total	7,252	11,085	7,521
Average Recorded Investment, Total	7,172	11,276	8,864
Interest Income Recognized, Total	38	19	86
Commercial Real Estate [Member]
With no related allowance recorded [Abstract]
Recorded Investment	98	107	102
Unpaid Principal Balance	98	110	101
Average Recorded Investment	100	198	865
Interest Income Recognized	2	2	8
With an allowance recorded [Abstract]
Recorded Investment		0	0
Unpaid Principal Balance		0	0
Related Allowance		0	0
Average Recorded Investment		0	2
Interest Income Recognized		0	0
Agricultural Real Estate [Member]
With no related allowance recorded [Abstract]
Recorded Investment		3,508	0
Unpaid Principal Balance		3,500	0
Average Recorded Investment		4,473	2,185
Interest Income Recognized		0	0
With an allowance recorded [Abstract]
Recorded Investment			0
Unpaid Principal Balance			0
Related Allowance			0
Average Recorded Investment			823
Interest Income Recognized			0
Residential 1st Mortgages [Member]
With no related allowance recorded [Abstract]
Recorded Investment		736	0
Unpaid Principal Balance		782	0
Average Recorded Investment		697	450
Interest Income Recognized		3	11
With an allowance recorded [Abstract]
Recorded Investment	411	0	769
Unpaid Principal Balance	443	0	826
Related Allowance	82	0	154
Average Recorded Investment	590	0	254
Interest Income Recognized	1	0	6
Home Equity Lines & Loans [Member]
With no related allowance recorded [Abstract]
Recorded Investment	677	249	0
Unpaid Principal Balance	686	268	0
Average Recorded Investment	339	521	228
Interest Income Recognized	0	1	5
With an allowance recorded [Abstract]
Recorded Investment	394	153	689
Unpaid Principal Balance	414	196	821
Related Allowance	120	153	138
Average Recorded Investment	542	174	332
Interest Income Recognized	0	0	3
Agricultural [Member]
With no related allowance recorded [Abstract]
Recorded Investment	32	1,753	35
Unpaid Principal Balance	41	1,783	43
Average Recorded Investment	34	1,843	586
Interest Income Recognized	0	0	0
With an allowance recorded [Abstract]
Recorded Investment	473	1,988	488
Unpaid Principal Balance	473	2,004	488
Related Allowance	118	1,022	122
Average Recorded Investment	481	1,997	1,002
Interest Income Recognized	7	8	31
Commercial [Member]
With no related allowance recorded [Abstract]
Recorded Investment	3,331	103	3,474
Unpaid Principal Balance	3,389	110	3,532
Average Recorded Investment	3,403	105	939
Interest Income Recognized	27	2	13
With an allowance recorded [Abstract]
Recorded Investment	1,627	143	1,641
Unpaid Principal Balance	1,657	144	1,657
Related Allowance	814	210	820
Average Recorded Investment	1,634	144	1,072
Interest Income Recognized	0	2	6
Consumer & Other [Member]
With an allowance recorded [Abstract]
Recorded Investment	48	345	50
Unpaid Principal Balance	51	354	53
Related Allowance	48	58	50
Average Recorded Investment	49	203	126
Interest Income Recognized	$ 1	$ 1	$ 3

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Average amount of investment of impaired financing receivables with related allowance for credit losses and without a related allowance for credit losses.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 310

-SubTopic 10

-Section 50

-Paragraph 15

-Subparagraph (c)(1)

-URI http://asc.fasb.org/extlink&oid=28368275&loc=d3e5212-111524

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 310

-SubTopic 10

-Section 50

-Paragraph 17

-URI http://asc.fasb.org/extlink&oid=28368275&loc=d3e5258-111524

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Amount of interest income recognized that the financing receivables (with related allowance for credit losses and without a related allowance for credit losses) were impaired.

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Amount of investment of impaired financing receivables with related allowance for credit losses and without a related allowance for credit losses.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 310

-SubTopic 10

-Section 50

-Paragraph 14A

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=28368275&loc=SL6953550-111524

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Amount of allowance for credit losses related to recorded investment.

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