Note 11 - Borrowings (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
Dec. 31, 2012	Sep. 30, 2013	Aug. 31, 2013
Note 11 - Borrowings (Details) [Line Items]
Number Of Secured Line Of Credit Facility	3
Number Of Unsecured Line Of Credit Facility	1
Number Of Banks	3
Line of Credit Facility, Maximum Borrowing Capacity	$ 50	$ 60
Federal Home Loan Bank Advances General Debt Obligations Disclosures Percentage Of Maximum Amount Available		15.00%	25.00%
Federal Reserve Advances General Debt Obligations Disclosures Loans And Securities Pledged	4.1	3.6
Loans and Investment Securities Available as Lendable Collateral	3.9	3.4
Additional Borrowing Capacity [Member]
Note 11 - Borrowings (Details) [Line Items]
Line of Credit Facility, Current Borrowing Capacity		$ 10

Federal home loan bank advances general debt obligations disclosures percentage of maximum amount available.

No definition available.

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- Definition

Federal reserve advances general debt obligations disclosures loans and securities pledged.

+ References

No definition available.

+ Details

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- Definition

Loans and Investment Securities Available as Lend-able Collateral.

+ References

No definition available.

+ Details

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- Details

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- Definition

Number Of Banks

+ References

No definition available.

+ Details

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- Definition

Number of secured line of credit facility.

+ References

No definition available.

+ Details

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- Definition

Number of unsecured line of credit facility.

+ References

No definition available.

+ Details

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- Definition

Amount of current borrowing capacity under the credit facility considering any current restrictions on the amount that could be borrowed (for example, borrowings may be limited by the amount of current assets), but without considering any amounts currently outstanding under the facility.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.19(b),22(b))

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 19, 22

-Article 5

+ Details

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- Definition

Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

+ References

+ Details

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