Note 6 - Fair Value (Details) - Quantitative Information About Level Fair Value Measurements - USD ($)	3 Months Ended
Mar. 31, 2016	Dec. 31, 2015
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Fair value	$ 12,183,927	$ 12,268,677
Impaired Loans/Leases [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Fair value	$ 4,969,221	4,545,966
Valuation technique	Appraisal of collateral
Other Securities [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Fair value	$ 7,214,706	$ 7,722,711
Valuation technique	Appraisal of collateral
Minimum [Member] \| Impaired Loans/Leases [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Appraisal adjustments	(10.00%)
Minimum [Member] \| Other Securities [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Appraisal adjustments	0.00%
Maximum [Member] \| Impaired Loans/Leases [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Appraisal adjustments	(50.00%)
Maximum [Member] \| Other Securities [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Appraisal adjustments	(35.00%)

This element represents the aggregate of the assets reported on the balance sheet at period end measured at fair value on a nonrecurring basis by the entity. This element is intended to be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements.

No definition available.

+ Details

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Period Type:	instant

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

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- Definition

Percentage of adjustment to the observed price for a similar asset or liability when an identical transaction does not exist, 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=66048111&loc=d3e19207-110258

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- Definition

Description of the inputs and valuation technique(s) used to measure fair value.

+ References

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- Details

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