Note 9 - Short-term Borrowings (Details Textual) - USD ($)	9 Months Ended
Sep. 30, 2016	Dec. 31, 2015
Minimum [Member]
Maturity Period of Federal Funds	1 day
Maximum [Member]
Maturity Period of Federal Funds	4 days
Federal Funds Purchased	$ 0	$ 0
Available Fund Lines From Correspondent Banks	18,800,000	18,800,000
Short-term Debt	5,337,000	7,354,000
Securities Sold under Agreements to Repurchase	300,000	400,000
Federal Home Loan Bank, Advances, Maturities Summary, Due in Next Twelve Months	$ 5,000,000	$ 7,000,000

Available fund lines from correspondent banks.

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- Definition

Maturity period of federal funds.

+ References

No definition available.

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- Definition

Amount of short term borrowing where a bank borrows, at the federal funds rate, from another bank.

+ 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 210.9-03.13(1))
-URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878

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- Definition

Amount of advances from Federal Home Loan Bank (FHLBank) maturing in the next fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
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-SubTopic 470
-Section 45
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- Definition

Amount, after the effects of master netting arrangements, of funds outstanding borrowed in the form of a security repurchase agreement between the entity and another party for the sale and repurchase of identical or substantially the same securities at a date certain for a specified price. Includes liabilities not subject to a master netting arrangement and not elected to be offset.

+ References

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Reference 6: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
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-Glossary Repurchase Agreement Accounted for as a Collateralized Borrowing
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Reflects the total carrying amount as of the balance sheet date of debt having initial terms less than one year or the normal operating cycle, if longer.

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