Note 3 - Loans and Allowance for Loan Losses (Details) $ in Thousands	12 Months Ended
Dec. 31, 2015 USD ($)	Dec. 31, 2014 USD ($)	Dec. 31, 2013 USD ($)
Note 3 - Loans and Allowance for Loan Losses (Details) [Line Items]
Allowance for Loan and Lease Losses, Period Increase (Decrease)	$ 93
Allowance for Loan and Lease Losses, Write-offs	$ 1,422
Percentage of Loan Portfolio	100.00%	100.00%
Impaired Financing Receivable, Related Allowance	$ 2,164	$ 3,412	$ 2,625
Loans and Leases Receivable, Impaired, Commitment to Lend	$ 995	$ 1,871
Financing Receivable, Modifications, Subsequent Default, Number of Contracts	0	0
Minimum Loan Balance for Loans Evaluated by Risk Categories	$ 500
Specific Reserves [Member]
Note 3 - Loans and Allowance for Loan Losses (Details) [Line Items]
Allowance for Loan and Lease Losses, Write-offs	1,304
Troubled Debt Restructurings [Member]
Note 3 - Loans and Allowance for Loan Losses (Details) [Line Items]
Allowance for Loan and Lease Losses, Period Increase (Decrease)		$ 623
Allowance for Loan and Lease Losses, Write-offs		$ 0
Increase (Decrease) in Other Loans	$ (2,044)
Change in Troubled Debt Restructurings	11.30%
Percentage of Loan Portfolio	81.00%	77.00%
Impaired Financing Receivable, Related Allowance	$ 1,669	$ 2,998
Unsecured [Member]
Note 3 - Loans and Allowance for Loan Losses (Details) [Line Items]
Percentage of Loan Portfolio	6.06%	5.66%
Residential Portfolio Segment [Member]
Note 3 - Loans and Allowance for Loan Losses (Details) [Line Items]
Real Estate Acquired Through Foreclosure	$ 1,131	$ 368
Mortgage Loans in Process of Foreclosure, Amount	$ 988	$ 1,692
Percentage of Loan Portfolio	38.22%	37.60%
Impaired Financing Receivable, Related Allowance			93
Commercial Real Estate Portfolio Segment [Member]
Note 3 - Loans and Allowance for Loan Losses (Details) [Line Items]
Proceeds from Loans	$ 3,127
Percentage of Loan Portfolio	28.90%	29.86%
Commercial Portfolio Segment [Member]
Note 3 - Loans and Allowance for Loan Losses (Details) [Line Items]
Financing Receivable, Modifications, Post-Modification Recorded Investment	$ 1,157
Percentage of Loan Portfolio	13.99%	14.12%
Impaired Financing Receivable, Related Allowance	$ 1,850	$ 900	$ 864

The change during the period in loans modified as troubled debt restructurings.

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Minimum loan balance for impaired loans on nonaccrual status or nonperforming in nature.

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- Definition

Amount of increase (decrease) of allowance reserve for credit loss.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03.7(d))
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Amount of loans and leases that have been written off from both loan receivables and allowance reserve for credit loss.

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-Name Accounting Standards Codification
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-SubTopic 10
-Section 50
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Post-modification amount of investment in financing receivables modified by troubled debt restructurings.

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- Definition

Number of financing receivables that have been modified by troubled debt restructurings within the previous 12 months and for which there was a payment default.

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Amount of allowance for credit losses related to recorded investment.

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- Definition

The increase (decrease) during the reporting period in loans that are classified as working capital and are not otherwise defined in the taxonomy.

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-Publisher FASB
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Reflects the unfunded portion of contractual agreements to lend funds to borrowers for loans whose terms have been modified by troubled debt restructuring.

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

Recorded investment of consumer mortgage loan receivables secured by residential real estate properties for which formal foreclosure proceedings are in process.

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- Definition

Cash received from principal payments made on loans related to operating activities.

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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.

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