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Note 4 - Loans and Allowance for Loan Losses (Details) - Additional Information Regarding Impaired Loans (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
With no related allowance recorded:
Total	$ 16,263	$ 14,038	$ 15,644	$ 13,607
Total	260	206	426	353
Total	260	206	426	353
Residential Portfolio Segment [Member]
With an allowance recorded:
Impaired Loans with An Allowance Recorded - Average Impaired Loans	898	426	902	424
Impaired Loans with An Allowance Recorded - Interest Income Recognized	8	4	17	8
Impaired Loans with An Allowance Recorded - Cash Basis Interest Recognized	8	4	17	8
With no related allowance recorded:
Impaired Loans with No Allowance Recorded - Average Impaired Loans	525	1,391	526	1,362
Impaired Loans with No Allowance Recorded - Interest Income Recognized	6	19	14	22
Impaired Loans with No Allowance Recorded - Cash Basis Interest Recognized	6	19	14	22
Commercial Real Estate Nonowner Occupied [Member]
With an allowance recorded:
Impaired Loans with An Allowance Recorded - Average Impaired Loans	3,317	3,438	3,330	3,450
Impaired Loans with An Allowance Recorded - Interest Income Recognized	40	12	74	53
Impaired Loans with An Allowance Recorded - Cash Basis Interest Recognized	40	12	74	53
With no related allowance recorded:
Impaired Loans with No Allowance Recorded - Average Impaired Loans	5,665		5,691
Impaired Loans with No Allowance Recorded - Interest Income Recognized	76		151
Impaired Loans with No Allowance Recorded - Cash Basis Interest Recognized	76		151
Commercial and Industrial [Member]
With an allowance recorded:
Impaired Loans with An Allowance Recorded - Average Impaired Loans	2,441	1,759	2,514	1,173
Impaired Loans with An Allowance Recorded - Interest Income Recognized	28	68	57	68
Impaired Loans with An Allowance Recorded - Cash Basis Interest Recognized	28	68	57	68
With no related allowance recorded:
Impaired Loans with No Allowance Recorded - Average Impaired Loans	1,811		1,207
Impaired Loans with No Allowance Recorded - Interest Income Recognized	79		79	3
Impaired Loans with No Allowance Recorded - Cash Basis Interest Recognized	79		79	3
Home Equity Loans [Member]
With an allowance recorded:
Impaired Loans with An Allowance Recorded - Average Impaired Loans	219	475	219	481
Impaired Loans with An Allowance Recorded - Interest Income Recognized	2	10	4	13
Impaired Loans with An Allowance Recorded - Cash Basis Interest Recognized	2	10	4	13
Commercial Real Estate Owner Occupied [Member]
With no related allowance recorded:
Impaired Loans with No Allowance Recorded - Average Impaired Loans	1,387	6,549	1,255	6,717
Impaired Loans with No Allowance Recorded - Interest Income Recognized	21	93	30	186
Impaired Loans with No Allowance Recorded - Cash Basis Interest Recognized	$ 21	$ 93	$ 30	$ 186

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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

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 310

-SubTopic 10

-Section 50

-Paragraph 15

-Subparagraph (c)(1)

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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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