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Note 7 - Loans And Related Allowance For Loan Losses (Details) - Troubled Debt Restructurings That Subsequently Defaulted During Current Quarter (USD $) In Thousands, unless otherwise specified	3 Months Ended	9 Months Ended
	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Commercial and Industrial [Member]
Note 7 - Loans And Related Allowance For Loan Losses (Details) - Troubled Debt Restructurings That Subsequently Defaulted During Current Quarter [Line Items]
Troubled Debt Restructurings Subsequently Defaulted Number of Contracts	1	1	2
Troubled Debt Restructurings Subsequently Defaulted Recorded Investment (in Dollars)	$ 30	$ 565	$ 60
Residential Real Estate Mortgage [Member]
Note 7 - Loans And Related Allowance For Loan Losses (Details) - Troubled Debt Restructurings That Subsequently Defaulted During Current Quarter [Line Items]
Troubled Debt Restructurings Subsequently Defaulted Number of Contracts	1		1
Troubled Debt Restructurings Subsequently Defaulted Recorded Investment (in Dollars)	$ 20		$ 20

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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

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 310

-SubTopic 10

-Section 50

-Paragraph 34

-URI http://asc.fasb.org/extlink&oid=28368275&loc=SL6953682-111524

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- Definition

Amount of investment related to financing receivables modified by troubled debt restructurings within the previous 12 months, for which there was a payment default.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 310

-SubTopic 10

-Section 50

-Paragraph 34

-URI http://asc.fasb.org/extlink&oid=28368275&loc=SL6953682-111524

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