Note 20 - Fair Value Measurements (Details) - USD ($)	9 Months Ended
Sep. 30, 2015	Dec. 31, 2014
Note 20 - Fair Value Measurements (Details) [Line Items]
Real Estate Acquired Through Foreclosure	$ 48,073,000	$ 44,856,000
Impaired Financing Receivable, Related Allowance	2,797,000	2,075,000
Foreclosed Assets Not Covered By FDIC Loss Share [Member]
Note 20 - Fair Value Measurements (Details) [Line Items]
Real Estate Acquired Through Foreclosure	48,100,000	44,900,000
Special Mention or Worse [Member]
Note 20 - Fair Value Measurements (Details) [Line Items]
Collateral Dependent Loans Amount at Which Testing Begins	500,000
Collateral Dependent Loans Amount At Which All Loans Are Tested	1,500,000
Collateral Dependent Loans [Member]
Note 20 - Fair Value Measurements (Details) [Line Items]
Impaired Financing Receivable, Related Allowance	$ 1,100,000	$ 733,000
Minimum [Member] \| Commercial and Residential Real Estate Collateral [Member]
Note 20 - Fair Value Measurements (Details) [Line Items]
Fair Value Percentage of Collateral Discount	10.00%
Maximum [Member] \| Commercial and Residential Real Estate Collateral [Member]
Note 20 - Fair Value Measurements (Details) [Line Items]
Fair Value Percentage of Collateral Discount	40.00%

For collateral dependent loans, impairment testing for all loans begins at this amount.

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- Definition

For collateral dependent loans, impairment testing for selected loans begins at this amount.

+ References

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Fair value percentage of collateral discount.

+ References

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- Definition

Amount of allowance for credit losses related to recorded investment.

+ 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 (a)(3)

-URI http://asc.fasb.org/extlink&oid=49124121&loc=d3e5212-111524

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- Definition

Carrying amount as of the balance sheet date of land and buildings obtained through foreclosure proceedings or defeasance in full or partial satisfaction of a debt arrangement.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 310

-SubTopic 10

-Section 50

-Paragraph 11

-URI http://asc.fasb.org/extlink&oid=49124121&loc=d3e5162-111524

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 310

-SubTopic 10

-Section 45

-Paragraph 3

-URI http://asc.fasb.org/extlink&oid=28367877&loc=d3e4437-111522

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 28

-Article 12

Reference 4: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 04

-Paragraph c

-Subparagraph Schedule III

-Article 5

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