Loans & Leases and Allowance for Credit Losses, Impaired Loans (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended	12 Months Ended
Mar. 31, 2015	Mar. 31, 2014	Dec. 31, 2014
With no related allowance recorded [Abstract]
Recorded Investment	$ 1,484	$ 4,138	$ 0
Unpaid Principal Balance	1,600	4,214	0
Average Recorded Investment	743	2,070	1,853
Interest Income Recognized	8	29	58
With an allowance recorded [Abstract]
Recorded Investment	5,776	2,953	7,229
Unpaid Principal Balance	5,966	3,038	7,518
Related Allowance	1,309	1,182	1,444
Average Recorded Investment	6,458	5,046	5,163
Interest Income Recognized	38	9	107
Recorded Investment, Total	7,260	7,091	7,229
Unpaid Principal Balance, Total	7,566	7,252	7,518
Related Allowance	1,309	1,182	1,444
Average Recorded Investment, Total	7,201	7,116	7,016
Interest Income Recognized, Total	46	38	165
Commercial Real Estate [Member]
With no related allowance recorded [Abstract]
Recorded Investment	192	98	0
Unpaid Principal Balance	192	98	0
Average Recorded Investment	96	49	49
Interest Income Recognized	2	2	4
With an allowance recorded [Abstract]
Recorded Investment			92
Unpaid Principal Balance			92
Related Allowance			2
Average Recorded Investment			47
Interest Income Recognized			4
Related Allowance			2
Residential 1st Mortgages [Member]
With no related allowance recorded [Abstract]
Recorded Investment	569
Unpaid Principal Balance	632
Average Recorded Investment	285
Interest Income Recognized	4
With an allowance recorded [Abstract]
Recorded Investment	359	411	937
Unpaid Principal Balance	429	443	1,069
Related Allowance	18	82	187
Average Recorded Investment	648	674	612
Interest Income Recognized	4	1	9
Related Allowance	18	82	187
Home Equity Lines & Loans [Member]
With no related allowance recorded [Abstract]
Recorded Investment	661	677	0
Unpaid Principal Balance	701	686	0
Average Recorded Investment	331	339	169
Interest Income Recognized	1	0	0
With an allowance recorded [Abstract]
Recorded Investment	138	394	951
Unpaid Principal Balance	156	414	1,020
Related Allowance	7	120	190
Average Recorded Investment	545	673	803
Interest Income Recognized	1	0	10
Related Allowance	7	120	190
Agricultural [Member]
With no related allowance recorded [Abstract]
Recorded Investment	14	32	0
Unpaid Principal Balance	27	41	0
Average Recorded Investment	7	16	15
Interest Income Recognized	0	0	0
With an allowance recorded [Abstract]
Recorded Investment	443	473	461
Unpaid Principal Balance	443	473	473
Related Allowance	129	118	114
Average Recorded Investment	452	467	473
Interest Income Recognized	7	7	28
Related Allowance	129	118	114
Commercial [Member]
With no related allowance recorded [Abstract]
Recorded Investment	48	3,331	0
Unpaid Principal Balance	48	3,389	0
Average Recorded Investment	24	1,666	1,620
Interest Income Recognized	1	27	54
With an allowance recorded [Abstract]
Recorded Investment	4,793	1,627	4,742
Unpaid Principal Balance	4,889	1,657	4,813
Related Allowance	1,118	814	910
Average Recorded Investment	4,768	3,185	3,182
Interest Income Recognized	25	0	54
Related Allowance	1,118	814	910
Consumer & Other [Member]
With an allowance recorded [Abstract]
Recorded Investment	43	48	46
Unpaid Principal Balance	49	51	51
Related Allowance	37	48	41
Average Recorded Investment	45	47	46
Interest Income Recognized	1	1	2
Related Allowance	$ 37	$ 48	$ 41

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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=35738203&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=35738203&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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+ 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=35738203&loc=SL6953550-111524

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