Note 9 - Fair Value Measurements and Disclosures (Details)	9 Months Ended
Sep. 30, 2015
Note 9 - Fair Value Measurements and Disclosures (Details) [Line Items]
Fair Value Inputs, Loss Severity	95.00%
Minimum Cost Saving for Refinance	2.00%
Collateralized Debt Obligations [Member]
Note 9 - Fair Value Measurements and Disclosures (Details) [Line Items]
Number of Trust Preferred Securities	6
Minimum [Member] \| London Interbank Offered Rate (LIBOR) [Member]
Note 9 - Fair Value Measurements and Disclosures (Details) [Line Items]
Debt Instrument, Basis Spread on Variable Rate	3.36%
Minimum [Member] \| Collateralized Debt Obligations [Member]
Note 9 - Fair Value Measurements and Disclosures (Details) [Line Items]
Fair Value Inputs, Loss Severity	0.00%
Maximum [Member] \| London Interbank Offered Rate (LIBOR) [Member]
Note 9 - Fair Value Measurements and Disclosures (Details) [Line Items]
Debt Instrument, Basis Spread on Variable Rate	7.80%
Maximum [Member] \| Collateralized Debt Obligations [Member]
Note 9 - Fair Value Measurements and Disclosures (Details) [Line Items]
Fair Value Inputs, Loss Severity	100.00%
Fair Value, Inputs, Level 3 [Member] \| Collateralized Debt Obligations [Member]
Note 9 - Fair Value Measurements and Disclosures (Details) [Line Items]
Number of Trust Preferred Securities	6

The least percentage of cost been saved during the process of refinancing.

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- References

No definition available.

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- Definition

The number of trust preferred securities held by the entity.

+ References

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- Definition

Percentage points added to the reference rate to compute the variable rate on the debt instrument.

+ References

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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=36462937&loc=d3e19207-110258

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