Note 4 - Loans and Allowance for Loan Losses (Details) (USD $)	0 Months Ended	12 Months Ended
Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2014	Dec. 31, 2013
Note 4 - Loans and Allowance for Loan Losses (Details) [Line Items]
Loans and Leases Receivable, Gross	$ 306,485,000	$ 294,478,000	$ 306,485,000	$ 294,478,000
Loans and Leases Receivable, Related Parties, Additions			10,612,000
Loans and Leases Receivable, Related Parties	8,654,000	6,549,000	8,654,000	6,549,000
Financing Receivable, Allowance for Credit Losses, Loss Factor Increase			0.25%
Financing Receivable, Allowance for Credit Losses, Loss Factor	20.00%		20.00%
Financing Receivable, Allowance for Credit Losses, Effect of Change in Method	1,600,000	1,400,000
Financing Receivable Allowance For Credit Losses Risk Factor	1.18	1.18	1.18	1.18
Impaired Financing Receivable, Interest Income, Cash Basis Method			0	0
Loans and Leases Receivable, Impaired, Commitment to Lend	0	0	0	0
Allowance for Credit Losses, Change in Method of Calculating Impairment	0	0	0	0
Financing Receivable, Modifications, Subsequent Default, Number of Contracts			0	0
Director of the Bank [Member]
Note 4 - Loans and Allowance for Loan Losses (Details) [Line Items]
Loans and Leases Receivable, Related Parties, Additions			978,000
Loans and Leases Receivable, Related Parties	1,200,000	951,000	1,200,000	951,000
Residential Mortgage Segment [Member]
Note 4 - Loans and Allowance for Loan Losses (Details) [Line Items]
Loan To Value Ratio	90.00%		90.00%
Loans and Leases Receivable, Gross	2,500,000		2,500,000
Amount of Loans Serviced for Others	169,000	200,000	169,000	200,000
Classified Loans [Member]
Note 4 - Loans and Allowance for Loan Losses (Details) [Line Items]
Allowance for Loan and Lease Losses, Period Increase (Decrease)			664,000	521,000
Charge-off Treatment [Member]
Note 4 - Loans and Allowance for Loan Losses (Details) [Line Items]
Financing Receivable, Allowance for Credit Losses, Net Charge Offs			0	0
Qualitative Factor Economic Condition [Member]
Note 4 - Loans and Allowance for Loan Losses (Details) [Line Items]
Financing Receivable Allowance For Credit Losses Risk Factor	1.20	1.20	1.20	1.20
Qualitative Factor Past Due Loans [Member]
Note 4 - Loans and Allowance for Loan Losses (Details) [Line Items]
Financing Receivable Allowance For Credit Losses Risk Factor	1.20	1.20	1.20	1.20
Qualitative Factor Other Internal And External Factors [Member]
Note 4 - Loans and Allowance for Loan Losses (Details) [Line Items]
Financing Receivable Allowance For Credit Losses Risk Factor	1.30	1.30	1.30	1.30
Overall Qualitative Factor [Member]
Note 4 - Loans and Allowance for Loan Losses (Details) [Line Items]
Allowance for Loan and Lease Losses, Period Increase (Decrease)			$ 520,000	$ 471,000

The amount of mortgage loans serviced for the benefit of others.

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- Definition

Amount of loss factor related to financing receivables.

+ References

No definition available.

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- Definition

Amount of increase during the period in of loss factors related to financing receivables.

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- Definition

Financing Receivable, Allowance for Credit Losses, Net Charge Offs

+ References

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- Definition

Represents financing receivable allowance for credit losses risk factor.

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- Definition

Ratio of the appraised value of a property to its mortgage.

+ References

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Amount of allowance for credit losses related to receivables which had been measured under a general allowance for credit losses methodology that are now identified as troubled debt restructurings.

+ References

No definition available.

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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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- Definition

The effect of a change in method or methods for calculating the allowance for credit losses on the current period provision.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 310

-SubTopic 10

-Section 50

-Paragraph 11B

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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.

+ References

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 310

-SubTopic 10

-Section 50

-Paragraph 34

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- Definition

Amount of interest income recognized on a cash-basis method of accounting that the financing receivables (with related allowance for credit losses and without a related allowance for credit losses) were impaired.

+ 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 (c)(3)

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- Definition

Amount before allowance of loans and leases held in portfolio, including but not limited to, commercial and consumer loans. Includes deferred interest and fees, undisbursed portion of loan balance, unamortized costs and premiums and discounts from face amounts. Excludes loans and leases covered under loss sharing agreements.

+ References

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-Publisher FASB

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-Topic 310

-SubTopic 10

-Section 45

-Paragraph 2

-URI http://asc.fasb.org/extlink&oid=28367877&loc=d3e4428-111522

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- Definition

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

+ References

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 310

-SubTopic 40

-Section 50

-Paragraph 1

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- Definition

For an unclassified balance sheet, reflects the carrying amount of unpaid loan amounts due from related parties at the balance sheet date.

+ References

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 850

-SubTopic 10

-Section 50

-Paragraph 1

-Subparagraph (d)

-URI http://asc.fasb.org/extlink&oid=6457730&loc=d3e39549-107864

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-SubTopic 210

-Section S99

-Paragraph 1

-Subparagraph (SX 210.9-03.7(e))

-URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878

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-Name Regulation S-X (SX)

-Number 210

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-Paragraph 7

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-Article 9

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Reflects the amount of new advances made to related parties in the form of loan and lease receivables.

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