Note 9 - Fair Value Measurements and Disclosures (Details) (USD $)	9 Months Ended
Sep. 30, 2013
Note 9 - Fair Value Measurements and Disclosures (Details) [Line Items]
Fair Value, Assets, Level 1 to Level 2 Transfers, Amount (in Dollars)	$ 9
Fair Value Inputs, Loss Severity	95.00%
Threshold for Identifying Banks with Trust Preferred Securities (in Dollars)	$ 15,000,000,000
Minimum Cost Saving for Refinance	2.00%
Pooled Trust Preferred Securities [Member]
Note 9 - Fair Value Measurements and Disclosures (Details) [Line Items]
Available-for-sale Securities, number	seven
Pooled Trust Preferred Securities [Member] \| Minimum [Member]
Note 9 - Fair Value Measurements and Disclosures (Details) [Line Items]
Fair Value Inputs, Loss Severity	0.00%
Pooled Trust Preferred Securities [Member] \| Maximum [Member]
Note 9 - Fair Value Measurements and Disclosures (Details) [Line Items]
Fair Value Inputs, Loss Severity	100.00%
Minimum [Member]
Note 9 - Fair Value Measurements and Disclosures (Details) [Line Items]
Fair Value Inputs, Discount Rate	3.94%
Maximum [Member]
Note 9 - Fair Value Measurements and Disclosures (Details) [Line Items]
Fair Value Inputs, Discount Rate	9.38%

Available-for-sale Securities, number

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- Definition

Minimum cost saving for refinance.

+ References

No definition available.

+ Details

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- Definition

Threshold for identifying Banks with Trust Preferred Securities.

+ References

No definition available.

+ Details

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- Definition

Amount of transfers of assets measured on a recurring basis out of Level 1 of the fair value hierarchy into Level 2.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 820

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (bb)

-URI http://asc.fasb.org/extlink&oid=25499696&loc=d3e19207-110258

+ Details

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- Definition

Interest rate used to find the present value of an amount to be paid or received in the future as an input to measure fair value. For example, but not limited to, weighted average cost of capital (WACC), cost of capital, cost of equity and cost of debt.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 820

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (bbb)

-URI http://asc.fasb.org/extlink&oid=25499696&loc=d3e19207-110258

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- Definition

Loss, including interest and principal, incurred on a defaulted security, expressed as a percentage of the original principal balance, used as an input to measure fair value.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 820

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (bbb)

-URI http://asc.fasb.org/extlink&oid=25499696&loc=d3e19207-110258

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