Note 7 - Loans and Allowance for Loan Losses (Details) - Individually Impaired Loans By Class of Loans, Continued - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Real Estate
Impaired loans, average	$ 44,525	$ 53,119	$ 45,981	$ 57,468
Impaired loans, interest income recognized	521	496	1,004	983
Impaired loans, cash basis interest recognized	502	476	981	943
Real Estate Portfolio Segment [Member] \| Real Estate Construction and Land Development [Member]
Real Estate
Impaired loans, average	10,388	15,452	10,754	15,537
Impaired loans, interest income recognized	135	120	216	233
Impaired loans, cash basis interest recognized	131	118	211	229
Real Estate Portfolio Segment [Member] \| Real Estate Mortgage Residential [Member]
Real Estate
Impaired loans, average	10,739	11,059	10,597	11,384
Impaired loans, interest income recognized	134	147	255	262
Impaired loans, cash basis interest recognized	122	141	243	250
Real Estate Portfolio Segment [Member] \| Real Estate Mortgage Farmland and Other Commercial Enterprises [Member]
Real Estate
Impaired loans, average	22,426	26,295	23,913	30,222
Impaired loans, interest income recognized	245	226	525	480
Impaired loans, cash basis interest recognized	242	214	519	458
Commercial Portfolio Segment [Member] \| Commercial and Industrial [Member]
Real Estate
Impaired loans, average	805	245	621	247
Impaired loans, interest income recognized	5	3	6	4
Impaired loans, cash basis interest recognized	5	3	6	3
Consumer Portfolio Segment [Member] \| Consumer Secured [Member]
Real Estate
Impaired loans, average	0	0	0	9
Impaired loans, interest income recognized	0	0	0	0
Impaired loans, cash basis interest recognized	0	0	0	0
Consumer Portfolio Segment [Member] \| Consumer Unsecured [Member]
Real Estate
Impaired loans, average	167	68	96	69
Impaired loans, interest income recognized	2	0	2	4
Impaired loans, cash basis interest recognized	$ 2	$ 0	$ 2	$ 3

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- Definition

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=49124121&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=49124121&loc=d3e5258-111524

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- Definition

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.

+ References

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+ References

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